How to enable java in firefox

Table of Contents

Enable JavaScript on Mozilla Firefox On the web browser, click the Firefox menu and select Options. In Options window, select the Content tab. Mark the Enable JavaScript checkbox. In Options window, click on the OK button to close it. Click on the Reload current page button on the web browser to refresh the page.

How do I know if JavaScript is enabled in Firefox?

In the address bar, type “about:config” (with no quotes), and press Enter. In the search bar, search for “javascript. enabled” (with no quotes).

How do I enable JavaScript and disable in Firefox?

How to Turn Off JavaScript in Firefox Enter about:config into the URL bar in Firefox. Select the blue Accept the Risk and Continue button. Enter javascript. enabled into the search box at the top of the page. Select the toggle to the right of javascript. JavaScript is now disabled in your Firefox browser.

How do I enable JavaScript enabled?

Activate JavaScript in your browser Open Chrome on your computer. Click. Settings. Click Privacy and security. Click Site settings. Click JavaScript. Turn on Allowed (recommended).

Does Firefox support JavaScript?

Mozilla Firefox also provides users with a clean interface and is supported across popular operating systems such as Windows, Mac/iOS and Android, among others. Jun 9, 2021.

How do I enable JavaScript on Mac Firefox?

Firefox Open the Firefox application by clicking on the icon in the Dock. Go to the Firefox menu at the top and select Preferences. Go to the Content tab at the top of the Preferences window. Check the box next to Enable JavaScript. Close the Preferences window to save the settings.

How do I enable Right click on Mozilla Firefox?

How to Remove the Block and Enable Right Clicking (in Firefox) Select/Cut/Copy Text. Right Click Context Menu. Middle Click on links to open in new tab. Ctrl + Click on links to open in new tab. Shift + Click on links to open in new window.

Is JavaScript enabled by default?

Yes, JavaScript is enabled by default in mainstream web browsers. But quite apart from making your site work for users that are more security-conscious than most and turn it off, you will want it to work in things other than mainstream web browsers, such as accessibility tools and search engines.

What is JavaScript in HTML?

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.

How do I enable JavaScript in HTML?

In the “Settings” section click on the “Show advanced settings” Under the the “Privacy” click on the “Content settings”. When the dialog window opens, look for the “JavaScript” section and select “Allow all sites to run JavaScript (recommended)”. Click on the “OK” button to close it.

How do I know if JavaScript is disabled?

First, click on the “Security” tab. Under the “Web content” section, you’ll see a box next to “Enable JavaScript.” If the box is unchecked, that means JavaScript has been disabled. Simply check or uncheck said box in order to adjust your preferences.

Is browser support JavaScript?

All the modern browsers come with built-in support for JavaScript. Frequently, you may need to enable or disable this support manually. This chapter explains the procedure of enabling and disabling JavaScript support in your browsers: Internet Explorer, Firefox, chrome, and Opera.

How do I add Java to Firefox?

Firefox 11 and Java Plugin Open Firefox. Click the orange Firefox menu button in the upper left-hand corner of the browser window. Click on Add-ons. Click on Plugins. Locate the Java (TM) Platform SE 6 U23 6.0. 230.5 plugin in the list and click the Enable button. Restart Firefox.

How do I enable Java in Firefox 48?

Enable Java in Firefox Launch the Firefox web browser. Click or double-click the Firefox app icon, which resembles an orange fox around a blue globe. Go to a site that uses Java. Now wait for the Java prompt to appear. Click the “Activate Java” link. Click “Allow Now” when prompted.

How do I change JavaScript in Firefox?

Enable JavaScript in Firefox Click into the Address Bar. Accept the warning about changing advanced settings. Can now search for advanced settings to change. Type “javascript” into the search field. Find the “javascript. Reset the JavaScript preference. Javascript is now enabled.

What JavaScript engine does Firefox use?

SpiderMonkey is the JavaScript engine used in the Firefox web browser. With Warp (also called WarpBuilder) we’re making big changes to our JIT (just-in-time) compilers, resulting in improved responsiveness, faster page loads and better memory usage.

Why can’t i right click on Firefox?

In this case, the solution is to update the Firefox browser to the latest version available. The web-page is blocking the right-clicks – Some web admins might choose to block the right-click functionality on some of their web pages. The right-click functionality is typically blocked on sure is and login pages.

How do I enable right click in HTML?

Using a Code method javascript:void(document. oncontextmenu=null); From now on, whenever you come across a web page, in which the right-click option has been disabled, just copy the above code, paste it in the browser address bar and hit enter. That’s it!Apr 29, 2018.

How do you check if I have JavaScript enabled?

go to Tools. then Internet Options select the Security tab. press the Custom Level button. scroll down to Scripting. enable Active Scripting.

How do I unblock JavaScript?

Enable JavaScript in Android browser Click on the “apps” option on your phone. Select the “Browser” option. Click the menu button in the browser. Select “Settings” (located towards the bottom of the menu screen). Select “Advanced” from the Settings screen. Check the box next to “Enable Javascript” to turn the option on.

Do I need to install JavaScript?

2 Answers. JavaScript, in most cases, is a client-side scripting language. That means the code runs in the browser so there’s nothing you need to do on the server to enable that. The exception would be installing some sort of web server written in Node.

Mahesh Makvana is a freelance tech writer who specializes in writing how-to guides. He has been writing tech tutorials for over a decade now. He’s written for some of the prominent tech sites including MakeUseOf, MakeTechEasier, and Online Tech Tips. Read more.

How to enable java in firefox

If you come across a site that asks you to enable JavaScript, or you want to run your own scripts, you will want to activate JavaScript in your Mozilla Firefox browser first. Here’s how to do just that.

In Firefox, JavaScript is enabled by default. However, if you or another user has disabled it, it’s easy to turn it back on. Also, note that the instructions in this guide apply to the desktop version of Firefox. In mobile Firefox, JavaScript is always enabled.

Enable and Disable JavaScript in Firefox

To turn on JavaScript in Firefox, first, launch the Firefox app on your computer.

In Firefox’s address bar at the top, type the following and press Enter:

How to enable java in firefox

You will see a “Proceed with Caution” notice. Here, click the “Accept the Risk and Continue” button.

How to enable java in firefox

On the page that opens, in the “Search Preference Name” box at the top, type the following:

How to enable java in firefox

You will see several search results. Here, to enable JavaScript, next to the “javascript.enabled” value, click the toggle button

The value next to “javascript.enabled” will turn to “true,” which indicates the feature is now enabled in the browser.

How to enable java in firefox

To disable JavaScript again in Firefox, next to the “javascript.enabled” value, click the toggle button again.

And that’s how you allow (and disallow) JavaScripts in Firefox!

Need to enable or disable JavaScript in Chrome? If so, there’s an equally easy way to do that.

How do I enable Java in Firefox 32 bit?

Enable Java in Firefox

  1. Launch the Firefox web browser. Click or double-click the Firefox app icon, which resembles an orange fox around a blue globe.
  2. Go to a site that uses Java.
  3. Now wait for the Java prompt to appear.
  4. Click the “Activate Java” link.
  5. Click “Allow Now” when prompted.

How do I open Java security settings?

Setting the Security levels through the Java Control Panel

  1. In the Java Control Panel, click on the Security tab.
  2. Select the desired Security level.
  3. Click Apply.
  4. Click OK to save changes made to the Java Control Panel.

Where is Java in settings?

Right-click on the Start button and select the Control Panel option. In the Windows Control Panel, click on Programs. Click on the Java icon to open the Java Control Panel.

How do I unblock Java security?

How to resolve “Application blocked by Java security” error

  1. Go to the Control Panel from the Start menu.
  2. Double-click on the Java icon to get the Java control panel dialog box.
  3. Navigate to the Security Tab.
  4. Click the ‘Edit Site List’ button.
  5. Click the Add button in the Exception Site List window.

How do I enable or disable Java in Firefox?

Click Java (TM) Platform plugin (Windows) or Java Applet Plug-in (Mac OS X) to select it Check that the option selected is Ask to Activate or Always Activate or on older Firefox versions, click on the Enable button (if the button says Disable Java is already enabled)

How do I add Java to Firefox?

1 Open the Firefox browser or restart it, if it is already running 2 From the Firefox menu, select Tools then click the Add-ons option 3 In the Add-ons Manager window, select Plugins 4 Click Java (TM) Platform plugin (Windows) or Java Applet Plug-in (Mac OS X) to select it

How do I enable JavaScript in Firefox for Mac?

Mac users who wish to turn on JavaScript in Firefox can do so in just a few easy steps: Run your Firefox web browser and open a new window. Type “about:config” in the address bar of your browser window and hit enter. Next, check the “Agree to be careful” button, and press continue to go to the Settings page.

Does Firefox support Java?

Due to security issues, current versions of Firefox do not support Java, nor will future versions. To enable Java content, you’ll have to install an old, 32-bit version of Firefox and then manually add the Java plugin. This is possible on Windows computers, but Firefox for Mac defaults to 64-bit, making it impossible to install Java

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How to enable java in firefox

  • 1 How do I enable Java in Firefox 32-bit?
  • 2 Is there a 32-bit version of Java?
  • 3 How do I enable Java on Mozilla Firefox?
  • 4 How do I run Firefox in 32-bit mode?
  • 5 How do I fix my current browser no longer supports Java?
  • 6 Is Safari a 32-bit browser?
  • 7 Do you need 32 bit JRE plugin for Firefox?
  • 8 Which is the last version of Firefox that supports Java?
  • 9 How to install Java as a plugin in Firefox?
  • 10 How to download Java for free on Firefox?

How do I enable Java in Firefox 32-bit?

Enable Java in Firefox

  1. Launch the Firefox web browser. Click or double-click the Firefox app icon, which resembles an orange fox around a blue globe.
  2. Go to a site that uses Java.
  3. Now wait for the Java prompt to appear.
  4. Click the “Activate Java” link.
  5. Click “Allow Now” when prompted.

Is there a 32-bit version of Java?

Java is available on Microsoft Windows in 64 and 32 bit versions, allowing users to get the appropriate version for their system. Users can even run both side-by-side for 64 bit operating systems.

How do I enable Java on Mozilla Firefox?

  1. Open the Firefox browser or restart it, if it is already running.
  2. From the Firefox menu, select Tools then click the Add-ons option.
  3. In the Add-ons Manager window, select Plugins.
  4. Click Java (TM) Platform plugin (Windows) or Java Applet Plug-in (Mac OS X) to select it.

How do I run Firefox in 32-bit mode?

  1. Close Firefox.
  2. Start the Finder and open the Applications folder.
  3. Right click or control-click the Firefox.app icon.
  4. Select “Get Info”
  5. Select or Deselect “Open in 32-bit mode”
  6. Close the “Firefox Info” window.
  7. Restart Firefox.

How do I fix my current browser no longer supports Java?

In the Security Settings – Internet Zone window, scroll to the bottom of the Settings list. You should see a setting called “Scripting of Java applets.” For Internet Explorer to be able to use Java, you should set this to either Enabled or to Prompt.

Is Safari a 32-bit browser?

Read more : http://www.ehow.com/how_5734712_run-safari-32bit.htmlApple’s Safari Web browser runs as a 64-bit application by default in Mac OS X 10.6. When running in 64-bit mode Safari isn’t compatible with some older Web browser plug-ins that only work with 32-bit Web browsers.

Do you need 32 bit JRE plugin for Firefox?

I have installed firefox as part of the distribution. I need to run a 32-bit java app with the 32-bit jre plugin.

Which is the last version of Firefox that supports Java?

Click Install at the bottom of the Java window. Open the Firefox 51 download page. Go to https://ftp.mozilla.org/pub/firefox/releases/51.0b9/ in a browser. This is where you can download the last version of Firefox that supported Java.

How to install Java as a plugin in Firefox?

Go to https://java.com/en/download/ in a browser. You’ll need to download and install Java before you can install it as a plugin in Firefox. Download and install Java. Double-click the downloaded Java setup file.

How to download Java for free on Firefox?

Go to Java.com and click on the Free Java Download button On the Firefox download page click on the Agree and Start Free Download button The File Download dialog box appears, click on the Save File button Double click on the downloaded file in the Download Manager window or where you normally save download files.

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Follow the steps below to disable Java or JavaScript. If your browser is not listed here, consult its support website.

All browsers

Disable Java Version 7 Update 10 from the Control Panel in Windows or System Preferences in macOS.

Windows

  1. Navigate to the Control Panel.
  2. In the Search Control panel, type Java Control Panel into the “Search” field, and click the Java icon to open it.
  3. In the Java Control Panel, click the Security tab.
  4. At the top of the Security tab, check the Enable Java content in the browser box to enable Java. Uncheck to disable.

macOS

  1. Click the Apple icon in the top left of the screen.
  2. Select System Preferences .
  3. Click the Java icon to open the Java Control Panel. Then, click the Security tab.
  4. At the top of the Security tab, check the Enable Java content in the browser box to enable Java. Uncheck to disable.

For Microsoft Edge, you must disable JavaScript from the Windows Group Policy Editor, rather than in the browser settings. To do so, in Windows 10:

  1. Launch the Edit Group Policy program.
  2. Expand the User Configuration folder.
  3. Expand the Administrative Templates folder.
  4. Expand the Windows Components folder.
  5. Expand the Microsoft Edge folder.
  6. Double-click Allows you to run scripts, like Javascript .
  7. Choose Disabled , and click Ok to confirm.

Firefox

To enable or disable the Java plug-in Firefox:

  1. Open a new tab, and then, in the address bar, type about:addons .
  2. Press Enter or Return .
  3. On the left, click Plugins .
  4. Find the Java Plug-in, and then click the corresponding activation button (on the right) to select either:
    • Always Activate (to enable the plug-in by default)
    • Never Activate (to disable the plug-in by default)
    • Ask to Activate (to make Firefox prompt you whenever a website tries to access the Java plug-in)
  5. When you’re finished, close the “about:addons” tab.

To enable or disable JavaScript in Firefox:

  1. Open a new tab, and then, in the address bar, type about:config .
  2. Press Enter or Return .
  3. You’ll see a “This might void your warranty!” warning. Click I’ll be careful, I promise! to continue.
  4. In the search bar, enter javascript.enabled , and then, in the search results, under “Preference Name”, locate javascript.enabled .
  5. Right-click (Windows) or Ctrl -click (macOS) javascript.enabled , and then select Toggle to change its “Value” entry to true (enabled) or false (disabled).
  6. When you’re finished, close the “about:config” tab.

For more on the about:config feature in Firefox, see the MozillaZine about:config page.

Chrome

To enable or disable Java in Chrome:

  1. In the address bar, enter chrome://plugins .
  2. Find the “Java” entry, and click its Disable link.
  3. Restart your browser.

To enable or disable JavaScript in Chrome:

  1. In the address bar, enter chrome://settings/content .
  2. Find JavaScript on the page and select either Allow all sites to run JavaScript or Do not allow any site to run JavaScript .
  3. Click Done and restart Chrome.

Safari

To enable or disable Java or JavaScript in Safari:

  1. From the Safari menu, select Preferences .
  2. Click Security .
  3. Check or uncheck the Allow Java or Enable JavaScript box.
  4. Restart your browser.

This is document bcyv in the Knowledge Base.
Last modified on 2021-12-02 16:30:16 .

How to enable java in firefox

The Java plugin is part of the Java Runtime Environment (JRE) and allows a browser to work with the Java platform to run Java applets to execute in the browser.

The Java plugin is enabled in a large number of browsers around the world and this makes it a target for malicious hackers. Any popular third-party plugin is subjected to the same kind of unwanted attention. The team behind Java have always taken security seriously and they will endeavor to quickly release an update to patch any serious security vulnerabilities found. This means the best way to minimize problems with the Java plugin is to make sure it is up-to-date with the latest release.

If you are really worried about the security of the Java plugin but still need to visit a popular website (e.g., online banking in some countries) that need the Java plugin enabled, then consider the two browser trick. You can use one browser (e.g., Internet Explorer) only when you want to use the websites using the Java plugin. For the rest of the time use another browser, (e.g., Firefox) with the Java plugin disabled.

Alternatively, you might find that you don’t go to websites that use Java very often. In this case, you may prefer the option of disabling and enabling the Java plugin as needed. The instructions below will help you to set up your browser to disable (or enable) the Java plugin.

Firefox

To turn on/turn off Java applets in the Firefox browser:

  1. Select Tools -> Add-ons from the menu toolbar.
  2. The Add-ons Manager window appears. Click on Plugins on the left-hand side.
  3. In the list on the right select, the Java Plugin – the name of the plugin will vary depending on whether you are a Mac OS X or Windows user. On the Mac, it will be called Java Plug-in 2 for NPAPI Browsers or Java Applet Plug-in (depending on the operating system version). On Windows, it will be called Java (TM) Platform.
  4. The button to the right of the selected plugin can be used to enable or disable the plugin.

Internet Explorer

To enable/disable Java in the Internet Explorer browser:

  1. Select Tools -> Internet Options from the menu toolbar.
  2. Click on the Security tab.
  3. Click on the Custom level.. button.
  4. In the Security Settings window scroll down the list until you see Scripting of Java applets.
  5. Java applets are Enabled or Disabled depending on which radio button is checked. Click on the option you want and then click OK to save the change.

Safari

To enable/disable Java in the Safari browser:

  1. Select Safari -> Preferences from the menu toolbar.
  2. In the preferences, window click on the Security icon.
  3. Make sure the Enable Java checkbox is checked if you want Java enabled or unchecked if you want it disabled.
  4. Close the preferences window and the change will be saved.

Chrome

To turn on/turn off Java applets in the Chrome browser:

  1. Click on the wrench icon to the right of the address bar and choose Settings.
  2. At the bottom click the link called Show advanced settings.
  3. Under the Privacy, section click on Content settings.
  4. Scroll down to the Plug-ins section and click on Disable individual plug-ins.
  5. Look for the Java plugin and click on the Disable link to turn off or the Enable link to turn on.

Opera

To enable/disable the Java plugin in the Opera browser:

Because the Lync Web App and Microsoft 365 are cloud-based technologies, they require interactive browser functionality. This functionality is provided, in part, by JavaScript. You might have to enable JavaScript within your browser in order to ensure that your features work as expected.

Instructions for enabling JavaScript vary by browser. Select your browser from the list to learn how.

Click Tools > Internet Options.

Click the Security tab > Custom Level.

In the Scripting section, click Enable for Active Scripting.

In the dialog box that displays, click Yes.

JavaScript is supported in the Microsoft Edge web browser. However, it might have been disabled in your browser by an administrative setting. If you encounter a JavaScript error in Edge:

On the More menu ( . ), select Open with Internet Explorer.

Then, follow the procedures for Internet Explorer.

If you’re running Windows OS, in the Firefox window, click Tools > Options.

Tip: If you’re running Mac OS, click the Firefox drop-down list > Preferences.

On the Content tab, click the Enable JavaScript check box.

If you’re running Windows OS, click Tools > Preferences.

Tip: If you’re running Mac OS, from the Safari menu, click > Preferences.

Click Preferences > Security tab.

Click the Enable JavaScript check box.

Click Close and refresh the browser.

If you received an error that says, This site requires use of scripts, which your browser does not currently allow, clear the web browser cache to delete history cookies, and any other website data.

Select Preferences > Privacy > Remove all web site data > Remove now.

Click the wrench icon on the toolbar.

Click Options > Under the Hood.

In the Privacy section, click Content settings.

Scroll to the JavaScript section and click Allow all sites to run JavaScript (recommended).

Close the Options tab and refresh the browser.

Firefox 52 began its roll out yesterday, bringing a bunch of small iterative improvements to the fore.

Among the most significant change in the release is the decision to disable support for all NPAPI plugins bar Adobe Flash by default.

This is a good move in the round as NPAPI is a terribly outdated technology (over 20 years old, in fact). Whatever bonuses these plugins, Flash, Silverlight and Java among them, offered have been long since outweighed by the inherent security flaws manipulated to malicious ends.

Google Chrome ditched NPAPI support back in 2014 (and the version of Flash that ships pre-bundled uses the newer PPAPI tech).

But it is in Firefox 52, with Mozilla’s first step towards total removal of the technology from its browser, that is likely to impact Linux users the most.

Renable NPAPI Plugin Support in Firefox 52

If there’s a particular NPAPI plugin that you rely on there is (for now) a way to override Firefox defaults and re-enable NPAPI support.

Reader Grof has all the details.

“This is important, because some websites are still using Java plug-ins, like for example our government site for signing documents. You can’t work with government if no Java plugin is present,” he explains.

“But there is a way to enable Java, Silverlight etc NPAPI plugins in Firefox 52 using an about:config setting. Add new Boolean string “plugin.load_flash_only” and set it to false. Then restart the browser.”

That’s it; assuming your NPAPI plugins are installed correctly they should work as before.

It’s a Short Term Solution

In Firefox 53, Mozilla will remove this workaround. Consider this a short-term, stop gap solution. If you think you’ll need a little longer to transition away from such plugins you should download Firefox ESR (Extended Support Release), where NPAPI plugins will continue to work for another year.

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– Last updated on March 13, 2017 by VG

In the recently released Mozilla Firefox 52 version, Mozilla has disabled support for NPAPI (Netscape Plugin Application Programming Interface) plugins such as Microsoft Silverlight, Java, Unity, Acrobat, Shockwave, DivX, etc. Only support for Adobe Flash Player plugin is enabled as its still widely used by websites.

Mozilla decided to disable supports for all NPAPI plugins except Adobe Flash as according to the company, these plugins are the main reason behind browser crashes and other performance and security related issues.

The good news is that if some users want to enable support for all NPAPI plugins back in Firefox browser, Mozilla has provided a preference to turn on the support in the meantime.

If you also want to bring back support for all NPAPI plugins in Mozilla Firefox 52 or later versions, this tutorial will help you.

We’ll need to use Firefox advanced configuration tool “ about:config ” to re-enable support for NPAPI plugins as shown in following steps:

1. Open Mozilla Firefox and type about:config in the addressbar and press Enter. It’ll show you a warning message, click on “I accept the risk!” button. It’ll launch Firefox’s hidden advanced configuration page.

2. Now right-click anywhere in the preferences list and select “New -> Boolean” option.

How to enable java in firefox

3. Type plugin.load_flash_only in the preference name box and click on OK button.

How to enable java in firefox

4. Now select False in the boolean value box and click on OK button.

How to enable java in firefox

That’s it. Restart Firefox and now all disabled NPAPI plugins should start working again without any problem.

NOTE: According to Mozilla, this built-in preference to bring back support for NPAPI plugins might be removed completely in future Firefox versions.

You are here: Home » Mozilla Firefox » [Firefox Tip] Enable Support for NPAPI Plugins Such as Silverlight, Java, Acrobat, etc

Published in: Mozilla Firefox

About the author: Vishal Gupta (also known as VG) has been awarded with Microsoft MVP (Most Valuable Professional) award. He holds Masters degree in Computer Applications (MCA). He has written several tech articles for popular newspapers and magazines and has also appeared in tech shows on various TV channels.

Comments

NOTE: Older comments have been removed to reduce database overhead.

Thanks, my silverlight works.

Right clicking anywhere in the preferences list does not bring up a menu that contains a “new” option, the menu that is shown only contains;
COPY
SELECT ALL
SEARCH GOOGLE FOR….
VIEW SELECTION SOURCE
INSPECT ELEMENT

^^ Newer versions of Firefox come with redesigned about:config page. Now the method to create new values has been changed. Copy/paste plugin.load_flash_only in search box given on about:config page and you’ll get an option to create the new value.

Hey, thanks a lot for this article. I did what you recommend (on 12/12/2019) but in the 84 version but I can’t still access to my DVR local address/IP.
Please help & thank you in advance.
Best regards.

Browser plugins like Java, Flash or Silverlight are third party programs that get loaded by the browsers provided that they are set up correctly and not blocked by the user. Most browsers load all plugins they can get hold of, which often has the consequence that ten or more plugins are loaded by default and may interact with websites that get opened in the web browser of choice.

While it is somewhat understandable that popular plugins such as Adobe Flash or Java are picked up by the browser, it is hard to understand why plugins such as Google Update or Microsoft Office get loaded as well.

Most browsers offer controls that enable you to disable plugins or set them to click to play.

Mozilla, the organization behind the Firefox browser, has been making use of the click to play feature recently to block plugins with known security vulnerabilities or stability issues from being loaded in Firefox automatically. These plugins have been added to a global blocklist that Firefox retrieves automatically.

Enable Java

One recent change affects Java only. Firefox users can select three states for all plugins of the browser:

  1. Always activate means the plugin is enabled.
  2. Never activate means it is disabled.
  3. Ask to activate means click to play is being used.

For the Java Deployment Toolkit, the always activate option has been removed so that you are left with the other two choices. If you need the JDK, you need to have it set to ask to activate. This displays a prompt in the browser when you open a web page that requires Java.

Before we look at those, it is important to address something else. You may have two Java plugins listed in the plugin manager:

  1. Java Deployment Toolkit
  2. Java (TM) Platform

The Java Deployment Toolkit is mainly used by Java developers and organizations who use Java on their Intranets. If you are developing applications for Android, you have it installed for example.

It is not really needed by end users in the browser, as the Java (TM) Platform plugin takes care of all the Java applet execution on the web instead.

So, before you start, I suggest you disable the Java Deployment Toolkit in the browser if it is listed there. Again: this should not affect any Java contents that you want to run on the Internet.

The Java (TM) Platform plugin can be set to all three activation states, but I suggest you set it to ask to activate.

How to enable java in firefox

Java contents are displayed with a placeholder image in the browser then. The benefit here is that they do not get loaded automatically anymore, giving you better control over where Java contents get loaded.

When you click on the placeholder element, a prompt is displayed at the top.

How to enable java in firefox

Here you can select to either allow the contents to run for the current session, or for all future sessions. Note that you can also click on the icon in Firefox’s address bar directly to get the very same prompt.

As far as the Java Deployment Toolkit plugin goes: if you have set it to ask to activate in Firefox, you will notice a different message on websites that try to use it.

Firefox will display a red icon in the address bar that flashes briefly on load. When you click on it, you get the following prompt that allows you to continue blocking the plugin, or use the allow now or allow and remember options to activate it temporarily or permanently for the site.

How to enable java in firefox

The element itself on the page is displayed in a different fashion as well.

How to enable java in firefox

It highlights that the plugin has security vulnerabilities.

Updating Java

The first thing that you may want to do when you encounter issues loading Java contents in Firefox is to make sure that you have the latest version of the plugin and the browser installed on your system. Firefox disables old versions of Java by default.

For Firefox, tap on the Alt-key on your keyboard and select Help > About Firefox from the menu that opens up. If an update is available it is picked up automatically and all you need to do is restart the browser to apply it.

For Java, visit Oracle’s Test Java website. It checks the Java Platform version that you have installed and will offer a download of the latest version of it if your version is older than that.

Java Cache

Java uses a cache to place temporary files in. This is done to speed up the execution of Java contents, but may also be the cause for issues that you are experiencing. It can happen that files do not get downloaded completely or corrupt or damaged along the way.

You may want to clear the Java Cache on your system to start with a clean slate and download all files from the remote server again.

In Windows, open the Control Panel, select Programs, and there the Java control panel applet.

How to enable java in firefox

Click on Settings on the General tab here to open the following page:

How to enable java in firefox

Here you can click on delete files to clear the cache. You can also reduce the disk space for temporary files here as it may be set to a large value by default.

The control panel provides other options for you to explore:

  • Check the security level on the Security tab. It is set to high by default, if yours is set to a different value, very high for instance, then try lowering the security level to the default value again.
  • You can disable Java’s integration in browsers on the security tab as well. Java won’t be available in all system browsers if you uncheck “Enable Java content in the browser”.

Sometimes, you may need to enable or disable JavaScript in Firefox browser manually. Because faulty scripts can harmful for privacy and security, slow down the web page loading, and freezes the web browser. So, read this post to know how to do that in 4 steps.

You may know that JavaScript is a high-level programming/scripting language for the web. It uses to add additional functionalities to the web pages. It helps to make dynamic web pages and special effects on web pages. Apart from it, you can create stunning and interactive web pages with JS, because it allows adding animations and validations. Well, JavaScript is a lightweight and can runs on both server and client side i.e. on the browser.

You may notice the special effects on some of your favorite websites like animated menus and buttons. However, JavaScript enhances your web experience.

How to enable java in firefox

But, sometimes, the problems occur on web pages because of JS. The web browser may freeze or crashes due to faulty JavaScript on the web page.

So, if you want to view the web page that freezes because of JS, you may need to disable the JavaScript to solve this problem.

Thanks to the web browsers to offers an option to turn on and off JavaScript.

Well, most of the web browsers provide this option in settings. But, not in the case of Mozilla firefox.

Enabling and disabling JavaScript in firefox browser is not a straight forward process. Because you can’t see any option for JS in settings. But, through the advanced configuration settings, you can turn on and off JavaScript easily with one click.

Let’s get started.

Steps to Enable and Disable JavaScript in Firefox

Before proceeding, make sure you have an updated version Mozilla Firefox browser. The steps are given below for enabling and disabling JavaScript in Firefox.

Note: The steps are the same for Firefox for Windows, macOS, Linux, and Android OS.

Step 1. Open the Mozilla Firefox browser and type “about:config” (without quotes) in the address bar and press the Enter button.

How to enable java in firefox

Step 2. On the next window, you’ll see the warning message on the screen. Because advanced configuration preferences can affect Firefox security and performance. So, click on the “Accept the risk and continue” button to proceed with caution.

Step 3. Now the Advanced Preferences window will be open. You can search the preferences by name using the search feature. Alternatively, click on the Show all button to see the all preferences. Without searching, it is hard to find a preference.

Type “javascript.enabled” (without quotes) in the search field and you’ll see the preference. Also, you’ll see the status and toggle button.

How to enable java in firefox

Step 4. Click on the toggle button to enable or disable JavaScript.

Now you can open any website without loading JS.

Also check out Edge browser flags to add new features.

However, you can also install an extension from Firefox add-ons. Add and Install Disable JavaScript extension to add the toggle button on the toolbar. The link is given below.

Open the link and click on the Add to Firefox button to download it. After that, click on the Add button to install the extension.

You’ll see the toggle button on the toolbar. Click on the button to turn on and off JS.

The extension also gives some other features like set the default state, add domains manually, disable behavior by domain or tab, provides shortcuts and context menu, and view blacklisted & whitelisted domains list.

This extension also requires to access your data for all websites and access browser tabs.

Why do you need to Enable and Disable JavaScript in Firefox?

JS is enabled by default on all browsers. There are many reasons to toggle on and off it.

  • You want to increase the web page loading speed.
  • A website forces to download the malware using JS.
  • The website shows popup ads using JavaScript.
  • The browser crashed on some web pages because of JS.

So, these are the reasons to disable the JS. However, after disabling, you can’t see some web pages properly because web pages may break. Also, some functionality will be missing. So, you need to re-enable it.

Final Words

Now you know how to enable and disable JavaScript in Firefox. You have two options for this. Either using inbuilt advanced preference settings or using extensions. However, Firefox warns about security before opening the about:config page, but it is safe to use the JS option. On the other hand, extensions need permissions and put privacy and security at risk.

By Tina | Follow | Last Updated December 08, 2021

Summary :

How to enable java in firefox

How to enable Flash in Firefox? How to allow Adobe Flash in the Firefox browser? This post from MiniTool will show you how to enable Flash in Firefox. Besides, you can visit MiniTool to find more Windows tips and solutions.

Adobe Flash is one of the most popular technologies for displaying media-rich content on the web. However, Mozilla has disabled Flash in Firefox starting January 2021 as the platform reached its end of life.

What Happened If Adobe Flash Is Disabled?

If the Adobe Flash is disabled and when you try to open a Flash website in Firefox, this web browser does not tell you anything about the fact that Flash has been discontinued. As a result, no Flash content is loaded, and no messages about it are shown. People even don’t know that Flash content should have been there.

And if you want to know the details for why this happens, the Adobe Flash Player EOL General Information Page makes it clear the company that no longer supports Flash Player after December 31, 2020, and blocked Flash content from running in Player beginning January 12, 2021.

How to enable java in firefox

Adobe Inc. put forward the idea of Adobe Flash end of life as early as in 2017. Now, other companies respond to this issue as the end date is approaching.

So, if you still want to use Flash in Firefox, is it possible? Of course, you can still use Flash in Firefox if you need to access websites that rely on Adobe Flash. So, in this post, we will show you how to enable Flash in Firefox and allow it to run on the sites you trust.

How to Enable Flash in Firefox?

In this part, we will show how to enable Adobe Flash in Firefox.

Now, here is the tutorial.

  1. Make sure that Adobe Flash software is up to date. If your version of Flash is out of date, go to its official site to download and install the latest version.
  2. In your Firefox browser, type about: addons in the address bar and press Enter.
  3. On the addons page, locate the Adobe Flash Player.
  4. Then select Always Activate from the drop-down menu.

After all steps are finished, you close the Addons tab and refresh your Digication page to finish enabling Flash. Once all steps are finished, you have enabled Adobe Flash in Firefox.

How to Enable Flash in Google Chrome?

If you are running Google Chrome, you can also choose to enable Flash in Google Chrome.

Now, here is the tutorial.

  1. Right-click the puzzle piece of Adobe Flash.
  2. Then choose Run this plugin to enter this application.
  3. Next, choose Click to enable Adobe Flash Player.
  4. At the top left, click Allow to run Flash.

Once all steps are finished, you may have enabled Adobe Flash in Google Chrome.

To sum up, as for how to enable Flash Player in Firefox, this post has shown you the solutions. If you do not know how to enable Flash in Firefox and want to do that, try the solutions in this post. If you have any ideas to enable Flash in Firefox, you can share them in the comment zone.

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ABOUT THE AUTHOR

How to enable java in firefox

Position: Columnist

Tina is a technology enthusiast and joined MiniTool in 2018. As an editor of MiniTool, she is keeping on sharing computer tips and providing reliable solutions, especially specializing in Windows and files backup and restore. Besides, she is expanding her knowledge and skills in data recovery, disk space optimizations, etc.

On her spare time, Tina likes to watch movies, go shopping or chat with friends and enjoy her life.

Marshall is a writer with experience in the data storage industry. He worked at Synology, and most recently as CMO and technical staff writer at StorageReview. He’s currently an API/Software Technical Writer based in Tokyo, Japan, runs VGKAMI and ITEnterpriser, and spends what little free time he has learning Japanese. Read more.

How to enable java in firefox

When you browse the internet with cookies enabled, websites can save your passwords and other data (with your consent), making your browsing experience a bit more enjoyable. Here’s how to enable (or disable) cookies in Mozilla Firefox.

How to Enable/Disable Cookies in Firefox on a Desktop

To enable cookies in Firefox on Windows 10, Mac, or Linux, click the hamburger icon in the top-right corner.

How to enable java in firefox

In the drop-down menu, select “Options.”

How to enable java in firefox

The Firefox preference settings will appear in a new tab. In the pane on the left, click “Privacy and Security.”

How to enable java in firefox

Alternatively, if you want to jump straight to the “Privacy and Security” tab, type the following in the Firefox address bar:

You’ll now be in the “Browser Privacy” window. In the “Enhanced Tracking Protection” section, you’ll see “Standard” is selected by default. This option enables the use of cookies, with the exception of “Cross-Site Tracking Cookies.”

How to enable java in firefox

Below the “Standard” option, click “Custom.” This is where the magic happens!

How to enable java in firefox

Now, you have full control over which trackers and scripts to block. Uncheck the box next to “Cookies” to allow all types, including those previously excluded (the cross-site tracking cookies).

How to enable java in firefox

If you want to specify in which instances cookies should be blocked, select the box next to “Cookies.” Then, click the arrow to open the drop-down menu and select the option that best suits your needs.

How to enable java in firefox

To completely disable cookies, select “All Cookies.” However, we don’t recommend doing this unless you’re troubleshooting browser issues, and even then, we recommend you clear the browser cache and cookies first.

How to Enable/Disable Cookies in Firefox on Mobile

To enable cookies in Firefox on Android, iPhone, or iPad, tap the hamburger menu in the bottom-right corner.

How to enable java in firefox

How to enable java in firefox

Scroll down to the “Privacy” section and tap “Tracking Protection.”

How to enable java in firefox

Unfortunately, the iOS and iPadOS settings aren’t as flexible as those on desktop and Android (which are the same). On iPhone or iPad, your only choices are “Standard” or “Strict,” both of which block cross-site trackers.

To allow all types of cookies, toggle-On “Enhanced Tracking Protection.”

How to enable java in firefox

At this writing, there isn’t a built-in way to completely disable cookies in Firefox on iPhone or iPad.

某些 Creative Cloud 应用程序、服务和功能在中国不可用。

If JavaScript is not enabled (turned on), you may not be able to install Adobe AIR, Flash Player, Shockwave Player, and Acrobat properly.

You do not need to enable JavaScript in the latest version of Firefox.

Verify if JavaScript is enabled

Microsoft Internet Explorer (Windows only)

In Internet Explorer, click Tools > Internet Options.

On the Security tab, select the Internet zone icon.

How to enable java in firefox

Click Custom level.

In Security Settings, scroll down to Scripting.

How to enable java in firefox

Select Enable under Active Scripting.

Select Trusted Sites and repeat steps 3 – 6.

Safari (Mac OS only)

In Safari, choose Safari > Preferences.

On the Security tab, select Enable JavaScript.

Mozilla Firefox

In Firefox version 23 and later, JavaScript is enabled by default. If you have an earlier version, as soon as you update, JavaScript will be enabled.

To verify if you have the latest version of Firefox:

  • Vista and Windows 7: Click Tools > Help > About Firefox.
  • Windows XP: Click Help > About Firefox (XP).

How to enable java in firefox

When you open the About Firefox window, Firefox automatically checks for and downloads any updates, which are installed when you restart the browser.

For more information about the automatic update process see “Update Firefox to the latest version” in Mozilla Firefox Help.

To enable JavaScript in Firefox version 22 and earlier:

If you are unable to update to the latest version of Firefox and are having problems with Flash Player installation, check to make sure JavaScript is enabled.

In Firefox, click Tools > Options.

Select Content, and then select Enable JavaScript.

How to enable java in firefox

Click OK, and then close and reopen Firefox.

Google Chrome

If you are having trouble installing Adobe AIR, make sure you have the latest version of Chrome installed.

If you want to download Adobe AIR for a different browser or operating system or an earlier version of Chrome, you should verify that JavaScript is enabled.

To verify if you have the latest version of Chrome:

  1. In Google Chrome, click Chrome > About Google Chrome.

When you open the About Google Chrome page, Chrome automatically checks for and downloads any updates, which are installed when you restart the browser.

For more information about the automatic update process, see “Update Google Chrome” in Google Chrome Help.

To verify if JavaScript is enabled:

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  • How to easily get Java and Flash working in Iceweasel, Firefox, Chromium, etc.

    First, don’t worry if you have Java 6 and Java 7 both on your system for now. You can use the command update-alternatives to ensure javac, jdb, jar, etc. etc. are properly linked to their Java 7 versions rather than their Java 6 versions but that is beyond the scope of this post. We are soley focusing on the Java plugin for your web browser and not worried with compiling Java programs, using Java to connecet to databases, etc.

    Do all of this as root.

    Assuming you are using a 64bit machine, install the following packages from the repository:

    1. openjdk-7-jre – OpenJDK Java runtime, using Hotspot JIT (7u3-2.1.3-1)

    This installs into the /usr/lib/jvm/java-7-openjdk-amd64 directory.

    *If you are using a 32bit machine you want to instead install the openjdk-7-jre-lib package and when you see amd64 below, use common instead. For example, the 32bit package installs into the /usr/lib/jvm/java-7-openjdk-common directory.

    2. icedtea-7-plugin – web browser plugin based on OpenJDK and IcedTea to execute Java applets (1.3.1-2.1)

    This installs into the same directory tree as the first install but adds /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/IcedTeaPlugin.so, which is the browser plugin.

    Once those are installed, go to the /etc/alternatives directory and create this soft link:

    While still in /etc/alternatives, issue the command ls -la mozilla-javaplugin.so to double check your work. The output should look like this:

    Now we just need to create the link in the browser plugins directory back to /etc/alternatives/mozilla-javaplugin.so. Go to the /usr/lib/mozilla/plugins directory and create this soft link:

    While still in /usr/lib/mozilla/plugins, issue the command ls -la mozilla-javaplugin.so to double check your work. The output should look like this:

    Finally, restart your browser and go to a Java test page to verify it’s working.

    I couldn’t explain it any easier than charonsecurity already did.

    I hope this helps others. It took me hours to get it all straight.

    The unpatched Java vulnerability reported last week could be exploited by malware to infect your system, although no such infections have been discovered to date.

    Former CNET contributor

    Dennis O’Reilly began writing about workplace technology as an editor for Ziff-Davis’ Computer Select, back when CDs were new-fangled, and IBM’s PC XT was wowing the crowds at Comdex. He spent more than seven years running PC World’s award-winning Here’s How section, beginning in 2000. O’Reilly has written about everything from web search to PC security to Microsoft Excel customizations. Along with designing, building, and managing several different web sites, Dennis created the Travel Reference Library, a database of travel guidebook reviews that was converted to the web in 1996 and operated through 2000.

    Last week’s notice by researchers at Security Explorations of an unpatched hole in the Java runtime environment may have left you wondering whether to disable Java until Oracle releases a patch. CNET’s Topher Kessler noted in his report on the Java flaw that no malware exploiting the vulnerability has yet been documented.

    Which leads to the question, “Do I need Java?”

    The best way to find out is to disable Java in your browser and re-enable it only if you encounter a site that prompts you to download Java before it will open. Then you can activate the Java plug-in by following the steps below in reverse, and perhaps disable the plug-in again after you leave the site.

    Related stories

    • Apple issues Java updates for OS X 10.6, 10.7 and 10.8New Java 7 exploit can potentially affect Macs
    • New vulnerabilities found in latest Java update

    (While researching this topic I discovered that one of my test PCs has been browsing flawlessly for more than a year without the Java runtime environment installed.)

    These steps will disable Java in Internet Explorer 9, Firefox 15.0.1, Google Chrome 22, and Safari 6.0.1. If you’re using an older version of these browsers, update to the latest release. (More information on software updaters is found at the end of this post.)

    Disable Java in IE 9 via the ‘Manage add-ons’ option
    Click IE 9’s gear icon in the top-right corner of the window and choose “Manage add-ons.” Select Toolbars and Extensions in the left pane under Add-on Types and scroll to the entry for the Java plug-in under “Sun Microsystems Inc.” Choose the Java entry and click Disable in the bottom-right corner.

    Disable Java in Internet Explorer 9 by opening Manage Add-ons, selecting the Java entry, and clicking Disable. Screenshot by Dennis O’Reilly/CNET

    The next time you start IE, a notice will appear at the bottom of the window informing you that the Java plug-in is ready to use. Click the “Don’t enable” button or the x on the right of the pop-up to continue browsing Java-free.

    After you disable Java in IE you’ll be prompted to enable the plug-in the next time you open the browser. Screenshot by Dennis O’Reilly/CNET

    Firefox’s Java plug-in can be disabled in a jiffy
    To prevent the Java plug-in from running in Firefox, click Tools > Add-ons to open the browser’s add-on manager. (If you don’t see the menu at the top of the Firefox window, press the Alt key.) Choose Plugins in the left pane, scroll to the entry for the Java plug-in, and click its Disable button.

    Disable Firefox’s Java plug-in via the browser’s Add-on Manager. Screenshot by Dennis O’Reilly/CNET

    (When I checked this Firefox setting on one of the PCs in my home office the Java SE 6 plug-in had been disabled automatically because Firefox identified it as vulnerable. Updating to Java SE 7 re-enabled the plug-in in Firefox automatically.)

    Turn off Java in Google Chrome
    You can disable Java in Chrome by entering “chrome://plugins” in the address bar and pressing Enter to display a list of the browser’s plug-ins. Scroll to the entry for Java and click Disable.

    Click Disable under the entry for Java in Google Chrome’s list of plug-ins to prevent the add-on from running automatically. Screenshot by Dennis O’Reilly/CNET

    Put Java on the shelf in Safari
    To shut down Java in Safari, click Safari > Preferences (or press Command-,), select the Security tab at the top of the window, and uncheck Enable Java.

    Open Safari’s Preferences window and choose the Security tab to disable Java in Apple’s browser. Screenshot by Dennis O’Reilly/CNET

    A word about drive-by downloads
    Every time I write about Java or Adobe’s Flash Player, I begin my making sure I have the most recent versions of the plug-ins. And every time I update the two programs manually I’m prompted to download a free security scanner: McAfee Security Scanner for Java and Norton Security Scan for Flash.

    It’s bad enough that the scans aren’t directly related to Java or Flash, but in both instances the option to scan your system is selected by default. People in a hurry will click OK to install the update without realizing they’re getting more software than they expect. Unless you want to prolong the update process by adding a malware scan you may not need, be sure to uncheck the scan options whenever you update either plug-in.

    Also, the confusion between Java and JavaScript continues unabated. The two technologies are unrelated despite their similar names. While JavaScript poses its own potential security problems, the scripting language is not affected by Java vulnerabilities.

    If your browsers and other programs are updated with the latest versions, there’s probably no need to disable JavaScript. For more on keeping your software up-to-date, read my review of three free patch-management utilities from May 2011.

    I am trying to install Java and plugins for Firefox. I installed both the JDK and JRE.

    When I try with the sudo update-alternatives –config java command it shows only one choice available.

    Plugins are not usable in Firefox.

    6 Answers 6

    If you are using a version after 52 (not ESR), which disabled NPAPI, you are out of luck. If you are using one prior, which you absolutely wouldn’t want to, you can install the OpenJDK JRE, which would allow you to execute Java binaries locally using the java binary. This however, isn’t enough to execute Java web applets on your browser, which can be accomplished by installing the Icedtea plugin:

    Then go to about:addons , in the plugin section, check if the plugin is enabled. Mozilla disables insecure plugins by default, that means that Java is disable even after installation due security concerns. You need to activate it before using it.

    Installing the IcedTea Java plugin:

    To install the IcedTea Java plug-in, open a terminal and type:

    Install the Firefox plug-in – Oracle

    Remove the IcedTea plugin, if it has been installed.

    Remove a former version of the Java plugin (may or may not be present)

    Now you can install the plugin, by creating a symbolic link (you tell Firefox where the plugin is located). For 32-bit Java, use

    For 64-bit Java use

    Confirm that the JRE has been successful by using the official Oracle website.

    Beginning in Firefox version 52, support for NPAPI plugins (java applets) in Firefox has ended, due to performance and security issues, the way that I manage to run java applets is to install the Extended Support Release (ESR) of firefox.

    How to enable java in firefox

    If you just downloaded and installed java jdk from oracle, then, let’s say you have installed jdk-8u91-linux-x64.tar.gz on

    Then you’ll have a directory like:

    All you have to do is go to your ubuntu firefox plugins directory and create a link:

    This is an old thread, but I stumbled upon it while googling a solution to my problem today. I figured someone else might be in the same situation.

    I need in-browser Java for legacy work-related websites, and the oracle java plugin does not cut it. After a long trial-and-error approach, I got IcedTea working consistently in an older version of firefox like this:

    • Download a tar of Firefox, version 51 (newer version don’t support the plugin)
    • Install the OpenJDK (7 or 8)
    • Install the icedtea–plugin and the icedtea-plugin
    • Now your openJDK installation will contain a IcedTeaPlugin.so file in the jre/lib folder
    • copy this to the mozilla/firefox plugin folders (I couldn’t figure out which one to copy it too, so I just copied it to anything firefox/plugins or mozilla/plugins)
    • start your old firefox version
    • verify the plugin is active (check about:plugins)

    One of my colleagues created a script to remove the old firefox, and untar it on every run. That way it never gets updated accidentally. Be sure not to do this with your main firefox application.

    Since ages we have seen that, to run Oracle EBS forms we need Java Plugin. i.e. without Java Plugin we cannot run Oracle Java Forms. In the past the Java Plugin was supported by all browsers but, slowly many browsers stopped supporting Java Plugins because it uses old Netscape Plug-in Application Programming Interface (NPAPI) plug-ins which was de-supported

    Some browsers are phasing out NPAPI plug-in support. Some browsers were released without NPAPI plug-in support. This prevents the Java plug-in from working.

    So the choice for running Oracle EBS forms was limited to very few browsers namely,

    • Microsoft Internet Explorer
    • Firefox Extended support Release
    • Safari on MacOS

    In April 2017, Oracle announced the support for Java Web Start (JWS) and certified Oracle E-Business suite with Java Web Start JWS.

    Data Loader Macro loading method can be used to load data into Oracle EBS Front end forms whether launched through JWS or Plugin

    What is Java Web Start

    The Java Web Start software provides an easy, one-click activation of applications. Java Web Start is included in the Java Runtime Environment (JRE) since release of Java 5.0. This means that if you install Java, you get Java Web Start installed automatically. The Java Web Start software is launched automatically, when a Java application using Java Web Start technology is downloaded for the first time. The Java Web Start software caches (stores) the entire application locally on your computer.

    With the release of Java Web Start, E-Business Suite 12.1 and 12.2 users can launch Java-based Forms from browsers that do not support Java plug-ins via NPAPI.

    You can now run Oracle EBS Java based forms with Java Web Start in the following browsers:

    • Microsoft Internet Explorer
    • Microsoft Edge
    • Firefox Rapid Release (32-bit and 64-bit)
    • Firefox Extended Support Release (32-bit and 64-bit)
    • Google Chrome

    Java Web Start is a new way that Java runs on clients computers but this technical change is generally invisible to client users. End users will not feel any difference in Oracle EBS forms.

    Java Web Start applications are launched from browsers using the Java Network Launching Protocol (JNLP).

    How to enable java in firefox

    • Oracle E-Business R12.2 or R12.1. Oracle EBS 11i is not supported
    • Minimum Java Runtime Environment: JRE 8 Update 121 b33 is required
    • Server side Patches for AD / TXK / FND

    Action

    Step 1. Apply Patches

    Patches which needs to be applied if you are using Oracle EBS R12.1

    If you are using Oracle EBS R12.1 then you need to apply the following patches

    • Oracle Forms 10g overlay patch 25441839
      It is the minimum required patch to add support for Java Web Start to Oracle E-Business Suite technology stack
    • Patch 24498616: R12.AD.B
      AD Patch required to add support for Java Web Start to Oracle E-Business suite.
    • TXK Patch 24319156: R12.TXK.B
      TXK Patch required to add support for Java Web Start to Oracle E-Business suite.
    • FND Patch 25380324: R12.FND.B
      FND patch for enabling Oracle E-Business Suite Java Applets for launching with Java Web Start
    • TXK Patch 29124450:R12.TXK.B , Patch 29058008:R12.FND.B, Patch 29052441:R12.FWK.B
      Required for enabling Multiple Forms Session Support Using Java Web Start otherwise you can skip

    You may need to apply any prerequisites patches which needs to applied before applying the above patches.

    Step 2 : Enable JWS in Application tier

    To enable JWS for all users you need to change the context variable “s_forms_launch_method” from browser to jws.

    After changing the variable run autoconfig and restart application services.

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    Last updated: December 10, 2020

    It is important that you read the following advisory:

    Keep Java up-to-date

    If you choose to keep Java installed on your computer (whether disabled or not) it is important to keep it up-to-date. Instructions that will help you do this are found here. NOTE: If you install a new version of Java from Java’s web site, remember to un-check the box to install the “ASK.com” toolbar. It is not needed.

    Managing Java

    The instructions below will help you disable Java in the individual browser(s) you use for your day-to-day web activities. For those who have no need for web sites or web programs that require Java, instructions are also included that will help you disable Java globally. In most cases, you will be alerted to the need for Java when you visit a site or use a program feature that requires it. At that point you must decide if another (safer) web site or program can be used instead. If you have no other option, you can enable Java selectively using instructions found here.

    Turn Java off in individual browsers

    (If you have no need for Java and want to turn it off globally, skip this section and proceed to the next section.)

    If you know you must use a web site or program that requires Java (e.g. certain features in Blackboard Learn), only one of your browsers should have Java enabled. Java should be disabled in all your remaining browsers. If you have not previously turned Java off globally using the Java Control Panel (Windows) or the Java Preference (Macintosh) then you may turn it off selectively in those browsers you intend to use for your daily work on the web. As an alternative, if you prefer to use only one browser for all your browsing, then you must learn to turn it off and on as needed. These instructions describe how to turn it off.

    Safari (Macintosh)

    1. Click on the Safari menu and choose Preferences.
    2. Click on the Security icon and check the box to “Enable Browser”. This should remove the check mark.
    3. Close the Preferences window.

    Firefox (Windows & Macintosh)

    1. Click on the Tools menu and choose Add-ons OR click on the Firefox menu, and choose Add-Ons.
    2. Click on Plug-ins and then locate the Java Applet plugin.
    3. Click to disable it and close the Add-ons window (if it is enabled).

    Chrome (Windows & Macintosh)

    1. Click on the Chrome menu and choose Preferences (Macintosh) OR click on the wrench icon, then select Settings (Windows)
    2. Click on Settings in the left column.
    3. Scroll to the bottom of the page and click on the link labeled “Show advanced settings”.
    4. Scroll down to the Privacy section and click on the button labeled “Content Settings. “.
    5. Next click on “Disable individual plug-ins” in the Plug-ins section.
    6. In the list that is presented, locate Java and click on the link to “Disable” it (if it is enabled).

    Internet Explorer 7 and above (Windows)

    1. Click on your Start button and select Control Panel
    2. Locate and open the Control Panel called Internet Options.
    3. Click the Programs tab and select Manage Add-ons.
    4. Select Toolbars and Extensions in the left hand column. Then in the right hand column scroll down to Oracle America.
    5. Click Java Plug-in then click the Disable button.
    6. Click Close and OK to accept the change.

    Turn Java off globally

    Follow these instructions if you are sure you won’t need Java. Turning Java off globally makes it unavailable regardless of the browser you use. It will remain available, however, for any applications installed on your computer that use Java. If you are unsure, you can still turn it off globally and then refer back to these instructions later if you need to turn it back on.

    Windows (all versions)

    NOTE: It is important to remove older versions of Java prior to proceeding with these instructions. You can keep the newest version of Java installed as long as it is disabled.

    1. Click on the Start button
    2. Click on Control Panel
    3. Click on the Java (32 Bit) Control Panel
    4. Click on the Security tab
    5. Click to uncheck the box at the top labeled, “Enable Java content in the browser”.
    6. Click Apply and then click OK.

    Macintosh (OS 10.7.3 and up) Lion & Mountain Lion

    NOTE: Versions of the Macintosh OS that are below 10.7.3 do not have the Java Preference and, therefore, cannot be turned off globally.

    1. Click on the Apple menu (upper left corner of the screen).
    2. Select Preferences.
    3. Locate the preference called Java (it is in the bottom row) and click to open it
    4. Click on the Security tab in the Java Preference.
    5. Click to uncheck the box labeled “Enable Java content in the browser”.
    6. Click on Apply and then click on OK.

    Does Chrome support Java? Using Java in Chrome is a little bit tricky at this moment.

    NPAPI was required to enable Java applets, but since 24th of November 2014, NPAPI was disabled by default.

    Since April 2015 NPAPI plugins were unpublished from Chrome Web Store.

    Between this period you could enable it in settings:

    But currently it’s not possible anymore, so you cannot just download Java for Chrome and make it running.

    So as I mentioned nowadays you should use little tricks…

    But first of all, you need to install Java on your PC.

    Install Java For Chrome on Windows

    How to use Java with Chrome steps:

    • Install IE Tab chrome extension (it emulates Internet Explorer under your Chrome browser and allows to run Java and Silverlight).
    • You’ll find its icon “e” in the right top corner. Click it and follow installation steps (run ietabhelper.exe).

    After that, a new tab will be opened and you’ll be allowed to use new IE Tab search line.

    Verify Java version here https://www.java.com/en/download/installed.jsp

    Press a “Verify Java version” button.

    You should confirm that you want to run Java detection application.

    Not native Java support, but it’s better than nothing.

    Install Java For Chrome on MacOs and Linux

    Tab IT plugin doesn’t support MacOs and Linux, that’s why we gonna use Test IE plugin.

    The problem is you have to pay, but they give you a free trial to test.

    So when you activate this Chrome extension you will be redirected to a homepage:

    Press a FREE TRIAL in the top right corner and register.

    Then you’ll be redirected to a list of available OS and browsers.

    I recommend taking FireFox under 52 version because FF after 52 partially supports Java.

    After that FF browser will be opened on your tab.

    Go to Java verification page to be sure that it’s running.

    Press a button and browser will ask you to allow Java:

    Then it will ask you: “do you really want to run Java detection application?”. Press “Run”.

    And at the end, it will say that your current Java version is 8 Update 151.

    That means, Java is running and you can use whatever you want.

    1. Tap the address bar and type about:config then press Enter.
    2. Press I’ll be careful, I promise! button to go to Firefox seting page.
    3. Type javascript.enabled into the Search box; then double click this setting row to set its state to true.
    1. In the Apple/System bar, select the Firefox menu item; then pick Preferences. from the drop-down menu.
    2. Select the Content icon/tab and mark the Enable JavaScript checkbox.
    3. Close the Options window to save your changes then refresh the page.

    Basically, we think if you choosed Linux to use, perhaps you are good enough to maintain all things to work perfectly. Certainly you know how to change many Firefox configs / preferrences as you want.

    So we do not guide you at here.
    Best regards.

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    How to enable java in firefox

    How to enable java in firefox

    How to rebase to Fedora Linux 36 on Silverblue

    How to enable java in firefox

    An introduction to USB Device Emulation and how to take advantage of it

    How to enable java in firefox

    What’s new in Fedora Workstation 36

    Mozilla decided to stop supporting NPAPI plugins for Firefox browser two years ago. NPAPI plugins are binary components integrated to the browser. Some well known NPAPI plugins are Flash, Java, and the GNOME Shell web extension.

    The stock Firefox 52 browser disables these components. The exception is Flash, but Firefox will remove its support in the future, too. Fortunately, Fedora users still have options to bypass that plugin ban.

    Enable plugins in Fedora Firefox browser

    This may be the easiest choice for now. Firefox 52 allows you to override the plugin block using a preference setting in about:config. In Firefox, enter about:config in the location bar, and confirm the warning dialog. Then right click anywhere on the option list and add a new Boolean option named plugin.load_flash_only and set it to false.

    Be aware this entry could be removed anytime without further warning, and is strictly unofficial.

    Install Firefox 52 ESR

    This is the official to run NPAPI plugins by Firefox now. However, at the end of this year Firefox 52 ESR (Extended Support Release) is planned to be discontinued.

    The Firefox 52 ESR binary package is provided from Mozilla site. Download and unpack the tar archive somewhere in your home directory and launch the browser. You can then register it as a default browser. It also updates itself automatically when a new release is available.

    You can have more than one browser installed. To choose the default in Fedora Workstation, go to the Settings control panel, and select Details, Default Applications.

    Use dedicated browser for plugins only

    This will be the final option when Firefox 52 ESR reaches its end of life. You can still use an old and unsupported browser, but it may contain flaws and vulnerabilities which won’t be fixed. A typical use case may be an internal system which needs a Java plugin but is otherwise secured. Never use an old browser for public web pages, since the browser may have known, exploitable flaws.

    You can use a different browser profile for such a dedicated browser. Open the Terminal app, change directory to the old browser, and run this command:

    Firefox 52 began its roll out yesterday, bringing a bunch of small iterative improvements to the fore.

    Among the most significant change in the release is the decision to disable support for all NPAPI plugins bar Adobe Flash by default.

    This is a good move in the round as NPAPI is a terribly outdated technology (over 20 years old, in fact). Whatever bonuses these plugins, Flash, Silverlight and Java among them, offered have been long since outweighed by the inherent security flaws manipulated to malicious ends.

    Google Chrome ditched NPAPI support back in 2014 (and the version of Flash that ships pre-bundled uses the newer PPAPI tech).

    But it is in Firefox 52, with Mozilla’s first step towards total removal of the technology from its browser, that is likely to impact Linux users the most.

    Renable NPAPI Plugin Support in Firefox 52

    If there’s a particular NPAPI plugin that you rely on there is (for now) a way to override Firefox defaults and re-enable NPAPI support.

    Reader Grof has all the details.

    “This is important, because some websites are still using Java plug-ins, like for example our government site for signing documents. You can’t work with government if no Java plugin is present,” he explains.

    “But there is a way to enable Java, Silverlight etc NPAPI plugins in Firefox 52 using an about:config setting. Add new Boolean string “plugin.load_flash_only” and set it to false. Then restart the browser.”

    That’s it; assuming your NPAPI plugins are installed correctly they should work as before.

    It’s a Short Term Solution

    In Firefox 53, Mozilla will remove this workaround. Consider this a short-term, stop gap solution. If you think you’ll need a little longer to transition away from such plugins you should download Firefox ESR (Extended Support Release), where NPAPI plugins will continue to work for another year.

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    Pre-requisite: Java Tutorials

    This article is about the support of Java on browsers.

    Why we need the support of Java on a browser?

    If you learned or have some knowledge or have worked in Java then it is likely that you must have come across this concept of Java Applet. So, an Applet is nothing but a Java program but the only difference is that it cannot directly run on a standalone machine. It needs a web browser to run. It is easily embedded within an HTML page and is a client-side concept i.e. runs on client-side.

    So, to run Applet, we need a Java-enabled browser. Browsers come with a Java plugin that allows the execution of an Applet on it. And so, the browsers that come to Java enabled, can run Applet without any hassle.

    So, now that we know why we need browser support for Java, let’s start with the list of browsers that support it today.

    Browser that supports Java:
    Browsers require Java plugin which depends on NPAPI (Netscape Plugin Application Programming Interface). Today, the majority of the well-known browsers have dropped the support for that.

    Here are browsers that do not support Java Applet any more:

    • Google Chrome
    • Firefox
    • Safari
    • Microsoft Edge
    • Opera

    So, as you can see that all these browsers not longer support Applet. Even the newer versions of Oracle’s JDK does not come with the support of the Java browser plugin.

    The reason for dropping the support was because of security issues and risks that were found.

    But there is Internet Explorer that still has the support for Java Applet. So, today Internet Explorer is the only browser that supports Java Applet.

    How to enable Java in Internet Explorer?
    Following are the steps to enable Java on Internet Explorer:

    1. Click on the ‘Tools’ icon on the top right corner of the window or press Alt+X, if on windows.
    2. Then for the menu select ‘Internet Options’.
      How to enable java in firefox
    3. Then in ‘Security’ tab, click on ‘Custom level’.
      How to enable java in firefox
    4. Now, In the pop-up, scroll down and search for ‘Scripting of Java applet’ and make sure it is enabled and click OK.

    How to enable java in firefox

    Note: There is another way if you still want to run Applet and security is not a concern and if you don’t want to use Internet Explorer, then you download an older version of any browser that did support Java Applet.

    Java Not Working In Firefox 42 64-bit

    Posted November 16th, 2015, 11:21 pm

    I have installed Java 8 Update 65 32-bit and 64-bit versions, but I am unable to get it to work for Firefox 42 64-bit on my computers. It doesn’t even show in Plugins.
    It is already enabled in the Java Security options.

    How do I get Java to work with Firefox 42 64-bit?
    Thanks.

    Posted November 16th, 2015, 11:37 pm

    Posted November 16th, 2015, 11:48 pm

    Posted November 17th, 2015, 12:00 am

    Posted November 17th, 2015, 12:09 am

    No, it is not listed.
    I have tried reinstalling Java, but I can’t get it to work since using Firefox 42 64-bit.

    I am starting to think that it might be an issue for Firefox 64-bit as I can’t get it work on any computer. I have a few.

    Posted November 17th, 2015, 1:37 am

    It is Not a issue with Win64 Firefox 42.0 but rather only the 64-bit Flash Player Plugin is white listed to run in Win64 Firefox since Win64 Firefox 41.0 builds in development.

    If you want to use other Plugins besides Flash Player you need to use 32-bit Firefox (Windows version) and 32-bit Plugins.

    Posted November 17th, 2015, 7:35 am

    Protocol wrote: I have installed Java 8 Update 65 32-bit and 64-bit versions, but I am unable to get it to work for Firefox 42 64-bit on my computers. It doesn’t even show in Plugins.
    It is already enabled in the Java Security options.

    How do I get Java to work with Firefox 42 64-bit?
    Thanks.

    Flash and Silverlight are the only plugins allowed in 64-bit Windows Firefox.

    Posted November 17th, 2015, 8:21 am

    Silverlight is not white listed.

    Posted November 17th, 2015, 10:01 am

    Posted November 17th, 2015, 10:32 am

    Protocol
    Not sure how often you need to get at something that needs JAVA . but you could bring down the portable version (42-32bit) of Firefox. and just have it there on your pinned icons on task-bar.

    And if you need to run it at the same time as your installed Firefox you will need to make a change in its control file.
    Another instance of Firefox is already running | PortableApps.com – Portable software for USB, portable and cloud drives

    Posted November 17th, 2015, 11:26 am

    So, basically, I can’t have Java in Firefox 64-bit?

    Posted November 17th, 2015, 11:51 am

    Sounds like that’s the case.

    In checking Plugins for this thread. I did notice that in this default profile I have the Flash plugin but
    I also have 2 more profiles and in those 2 profiles I also have the OpenH264. and Primetime Decrypt. plugins. but those are not in this default profile. I thought all profile would carry the same plugins. and I don’t remember fooling around with any plugin related stuff . to remove them. but all works fine, so I’ll just mozy along with what works.

    Enable JavaScript in your browser today and start using lot of web applications over the web.
    Here you will learn how to enable JavaScript in browser you are using the most.

    So how do I enable JavaScript in Chrome or other browsers?

    Enable JavaScript in Chrome

    1. Open Chrome and head to the web browser menu. Enter the Settings.
    2. In Settings section scroll down and click on the Show advanced settings.
    3. Under Privacy tab search for Content settings and click on it.
    4. Dialog window appears. Search for JavaScript section. Then select Allow all sites to run JavaScript (recommended).
    5. Click the OK button and restart Chrome.

    Enable JavaScript in SAFARI

    1. Open Safari. In Safari menu find and select Preferences.
    2. Find and select Security tab.
    3. Locate Plugin settings. Go in and locate Java.
    4. Select Java checkbox.
    5. Restart Safari.

    Enable JavaScript in FIREFOX

    1. Type into the address bar: about:config. Press Enter.
    2. If a warning message appears click on “I’ accept the risk”.
    3. In the top is a search box. Type here javascript.enabled.
    4. Toggle the javascript.enabled preference. You can do it by right-click, select Toggle or double-click the preference.
    5. Change the value from false to true.
    6. Restart Firefox.

    Enable JavaScript in IE (INTERNET EXPLORER)

    1. On web Internet Explorer menu by clicking on gear icon
    2. Choose Internet Options.
    3. In the Internet Options select Security tab.
    4. In this tab click on the Custom level button.
    5. In Security Settings – Internet Zone dialog look for Scripting section.
    6. Find Active Scripting item and select Enable.
    7. When Warning! window pops out asking “Are you sure you want to change the settings for this zone?” select Yes.
    8. Click OK button and restart IE.

    Enable JavaScript in Microsoft Edge

    We are very sorry, but Microsoft Edge is not supporting plugins as a JavaScript or Active X in Edge browser.
    You should try using another browser.

    How to enable Java in FF55?

    Posted August 17th, 2017, 8:39 am

    Posted August 17th, 2017, 8:45 am

    Posted August 17th, 2017, 8:45 am

    Posted August 17th, 2017, 8:57 am

    .
    FYI, JAVA is dying. I have not seen it used in at least 1 – 2 years on any sites.

    Posted August 17th, 2017, 9:03 am

    How would it work up to 57 when support is dropped in 56? Not to mention the plugin support removed previously.

    Posted August 17th, 2017, 9:08 am

    WaltS48 wrote: How would it work up to 57 when support is dropped in 56? Not to mention the plugin support removed previously.

    Thanks WaltS48 for the confirmation of JAVA’s impending death.

    Posted August 17th, 2017, 9:58 am

    Posted August 17th, 2017, 10:05 am

    Posted August 17th, 2017, 10:25 am

    Posted August 17th, 2017, 11:14 am

    Posted August 17th, 2017, 11:20 am

    I was speaking of JAVA on the Internet. I am aware there are a number of legacy corporate IT systems built on JAVA and they will die slowly as fresh blood moves into IT departments, budgets permitting.

    Posted August 17th, 2017, 11:34 am

    Posted August 17th, 2017, 11:36 am

    Posted August 17th, 2017, 11:40 am

    Young doesn’t mean bright. Many in IT have a play it safe CYA attitude. Remember, most senior management view IT as not adding to the bottom line. A number of years ago I fought the IT wars at my $65B company. IT at that time was in bed with IBM and thought any other system was a joke. After the war we had:

    1. DEC in engineering
    2. Apollo in Software development
    3. Sun in Software development after they bought Apollo
    4. Apple in all administrative functions
    5. IBM in the MIS and Finance departments

    Posted August 17th, 2017, 2:14 pm

    The Firefox 57.0 thing is about the Extensions and not Plugins. Some people in this case used the general term Addons when they really meant Extensions. https://addons.mozilla.org/faq

    Firefox 52.0 and later Releases only allows the Flash Player Plugin to run in Firefox whether on Windows, Mac OSX or Linux. If you want to use the Java Plugin in Firefox on Windows then you need 32-bit Firefox 52 ESR and 32-bit Java Plugin.

    The Browser Console is like the Web Console , but applied to the whole browser rather than a single content tab.

    So it logs the same sorts of information as the Web Console – network requests, JavaScript, CSS, and security errors and warnings, and messages explicitly logged by JavaScript code. However, rather than logging this information for a single content tab, it logs information for all content tabs, for add-ons, and for the browser’s own code.

    If you also want to use the other web developer tools in the regular Web Toolbox with add-on or browser code, consider using the Browser Toolbox .

    Similarly, you can execute JavaScript expressions using the Browser Console. But while the Web Console executes code in the page window scope, the Browser Console executes them in the scope of the browser’s chrome window. This means you can interact with all the browser’s tabs using the gBrowser global, and even with the XUL used to specify the browser’s user interface.

    NB: The Browser Console command line (to execute JavaScript expressions) is disabled by default. To enable it set the devtools.chrome.enabled preference to true in about:config, or set the “Enable browser chrome and add-on debugging toolboxes” (Firefox 40 and later) option in the developer tool settings .

    Opening the Browser Console¶

    You can open the Browser Console in one of two ways:

    from the menu: select “Browser Console” from the Web Developer submenu in the Firefox Menu (or Tools menu if you display the menu bar or are on macOS).

    from the keyboard: press Ctrl + Shift + J (or Cmd + Shift + J on a Mac).

    You can also start the Browser Console by launching Firefox from the command line and passing the -jsconsole argument:

    The Browser Console looks like this:

    How to enable java in firefox

    You can see that the Browser Console looks and behaves very much like the Web Console :

    most of the window is occupied by a pane that display messages

    at the top, a toolbar enables you to filter the messages that appear.

    at the bottom, a command line interpreter enables you to evaluate JavaScript expressions.

    Beginning with Firefox 68, the Browser Console allows you to show or hide messages from the content process (i.e. the messages from scripts in all the opened pages) by setting or clearing the checkbox labeled Show Content Messages. The following image shows the browser console focused on the same page as above after clicking on the Show Content Messages checkbox.

    How to enable java in firefox

    Browser Console logging¶

    The Browser console logs the same sorts of messages as the Web Console:

    Warnings and errors (including JavaScript, CSS, security warnings and errors, and messages explicitly logged by JavaScript code using the Console API

    Input/output messages commands send to the browser via the command line, and the result of executing them

    However, it displays such messages from:

    web content hosted by all browser tabs

    the browser’s own code

    Messages from add-ons¶

    The Browser Console displays messages logged by all Firefox add-ons.

    Console.jsm¶

    To use the console API from a traditional or bootstrapped add-on, get it from the Console module.

    One exported symbol from Console.jsm is console . Below is an example of how to access it, which adds a message to the Browser Console.

    Browser Console command line¶

    The Browser Console command line is disabled by default. To enable it set the devtools.chrome.enabled preference to true in about:config , or set the “Enable chrome debugging” option in the developer tool settings .

    Like the Web Console, the command line interpreter enables you to evaluate JavaScript expressions in real time:

    How to enable java in firefox

    Also like the Web Console’s command line interpreter, this command line supports autocomplete, history, and various keyboard shortcuts and helper commands . If the result of a command is an object, you can click on the object to see its details.

    But while the Web Console executes code in the scope of the content window it’s attached to, the browser console executes code in the scope of the chrome window of the browser. You can confirm this by evaluating window :

    How to enable java in firefox

    This means you can control the browser: opening, closing tabs and windows and changing the content that they host, and modify the browser’s UI by creating, changing and removing XUL elements.

    Controlling the browser¶

    The command line interpreter gets access to the tabbrowser object, through the gBrowser global, and that enables you to control the browser through the command line. Try running this code in the Browser Console’s command line (remember that to send multiple lines to the Browser Console, use Shift + Enter ):

    It adds a listener to the currently selected tab’s load event that will eat the new page, then loads a new page.

    You can restart the browser with the command Ctrl + Alt + R (Windows, Linux) or Cmd + Alt + R (Mac) This command restarts the browser with the same tabs open as before the restart.

    Modifying the browser UI¶

    Since the global window object is the browser’s chrome window, you can also modify the browser’s user interface. On Windows, the following code will add a new item to the browser’s main menu:

    How to enable java in firefox

    On macOS, this similar code will add a new item to the Tools menu:

    You’ll need to enable scripts in your browser to get the most out of Trinity’s internet resources. Below are instructions for enabling scripts in most of the popular browsers available for your computer. If you are experiencing problems with any of Trinity’s online resources, check and make sure that your browser has scripts enabled.

    Internet Explorer

    1. Open Internet Explorer and click on “Tools.” A drop-down menu will appear.
    2. Click on “Internet Options.”
    3. Click on the “Security” tab.
    4. Click on the “Internet” icon and then click on “Custom level…”
    5. Scroll down to the “Scripting” section of the “Security Settings—Internet Zone” dialog box and enable “Active Scripting.” Click on “OK” to close the dialog box and then click on “Apply” and “OK” to close “Internet Options.”
    6. Restart Internet Explorer to finish the procedure.

    Mozilla Firefox

    1. Open Firefox and click on “Tools.” A drop-down menu will appear.
    2. Click on “Options…”
    3. Click on the “Content” tab.
    4. Check the box beside “Enable JavaScript” and click on “OK.”
    5. Restart Firefox to allow the changes to take effect.

    Java Script is an object-oriented scripting language used to enable programmatic access to objects within both the client application and other applications. These Javascript allow enhanced user interface and dynamic website. There are some sites that require java-scripts to enabled.

    Javascript in Firefox browser

    How to enable java in firefox

    1.Open Firefox browser.
    2. Go to Tools > Options
    3. Click on Content Tab.
    4. Select Enable Javascript checkbox & click OK

    If you want to disable the javascript you just deselect the Enable Javascript checkbox.

    Javascript in Internet Explorer browser

    How to enable java in firefox

    1. Open Internet Explorer.
    2.Go to ‘Tools > Internet Options.
    3. Click on Security tab > Custom Level
    4.Scroll down & search for Scripting. Under Active Scripting, select Enable & click OK.

    In order to disable javascript, you have to click on Disable under Active Scripting and then click OK.

    Javascript in Google Chrome browser

    Well there is no such option to enable or disable Java script in Google chrome. By default it is enabled in Google Chrome. But still you can disable java script.

    How to enable java in firefox

    1. Right click Google Chrome icon & click Properties.
    2. Click on Shortcut tab.
    3. Add -disable-javascript parameter in the Target field.
    4. Click the OK button.

    Now when you open Chrome, javascript will be disabled. To enable it again, just remove the disable javascripts from the target field.

    Javascript in Opera browser

    How to enable java in firefox

    1. Open Opera > Tools.
    2. Click on Preferences > Content Tab.
    3. Select Enable Javascript checkbox & click OK.

    To Disable the Javascript you have to deselect the Enable Javascript.

    Most modern browsers enable JavaScript by default. However, here’s an overview of how to enable/disable JavaScript if required.

    To view webpages with JavaScript, you need to ensure your browser has JavaScript enabled. Generally speaking, you can still view the webpage without JavaScript, but you will not be able to take advantage of the JavaScript functionality.

    When testing any web page that you develop, it’s a good idea to disable JavaScript periodically to see how the page appears and behaves without JavaScript. This will show you how it will be displayed to users with JavaScript disabled.

    However, to test that the actual JavaScript code works properly, you will need to ensure that it’s enabled.

    How do I check if my browser has JavaScript enabled?

    You normally do this by checking your browser’s options/preferences/settings. This will depend on the browser you’re using. Instructions for some of the more common browsers are below:

    Mozilla Firefox

    • Type about:config into the address bar
    • Click I’ll be careful, I promise
    • Using the search bar at the top, search for javascript.enabled . This should return the entry you’re looking for.
    • Right-click on javascript.enabled and select Toggle . You can also double-click it if you prefer.

    Google Chrome

    1. Go to Chrome from the top menu
    2. Select Preferences.
    3. Click on Show advanced settings. Click on Content Settings.
    4. Ensure that the Allow all sites to run JavaScript (recommended) option is selected
    5. Click OK

    Apple Safari

    1. Go to Safari from the top menu
    2. Select Preferences
    3. Select Security
    4. Ensure that the Enable JavaScript option is checked
    5. Click OK

    Opera

    1. Go to Opera from the top menu
    2. Select Preferences
    3. Select Websites from the left menu bar
    4. Ensure that Allow all sites to run JavaScript (recommended) is checked

    Internet Explorer

    1. Go to Tools from the top menu
    2. Select Internet Options
    3. Click on the Security tab
    4. Ensure that the Internet zone is selected
    5. Click Custom Level
    6. Scroll down until you see the Scripting section
    7. Ensure that the Active Scripting option is set at Enable
    8. When the Warning! window asks Are you sure you want to change the settings for this zone? click Yes

    Microsoft Edge

    For Microsoft Edge on Windows 10, you need to disable JavaScript from the Windows Group Policy Editor, rather than in the browser settings.

    You can access the Windows Group Policy Editor by searching for Edit Group Policy in the Windows Taskbar, then navigate to the appropriate setting via the left navigation pane.

    Depending on your browser, the exact steps may differ slightly from above. Having said that, the above steps should point you in the right direction.

    Note that you may need to refresh the page after enabling JavaScript before you see the effect.

    How do I disable JavaScript?

    You simply go through the steps above but ensure the JavaScript options are not checked/selected.

    If you’re developing web pages with JavaScript, it’s good practice to view your website with JavaScript disabled. This will show you what your website will look like to users who choose to disable JavaScript.

    Other browsers?

    Most (if not all browsers) give you the option to enable/disable JavaScript. If your browser is not listed above, the steps above will give you some idea of how to find it. Just look for something called tools , options , preferences or something similar.

    Warning

    Java and JavaScript are two different things — make sure you’re enabling/disabling the right option!

    Javascript is prominent throughout the web, allowing many of the various sites and features we all know and love when browsing the web to function as intended. With that said, sometimes users need to enable or disable Javascript.

    Need to re-enable or disable Javascript in Safari, Chrome, or Firefox? Fortunately, most modern web browsers make it very easy to toggle on or off, and while it’s almost always recommended to keep javascript enabled, there are cases where developers and other users need to turn it off.

    How to Disable or Enable Javascript in Safari, Chrome, & Firefox

    Enabling and Disabling Javascript in Safari:

    1. Open Safari Preferences
    2. Click on “Advanced” and check the box next to “Show Develop menu in menu bar”
    3. Pull down the “Develop” menu and select “Disable Javascript”, a check signifies it’s disabled

    Disabling and Enabling Javascript in Google Chrome:

    1. Open Google Chrome’s Preferences
    2. Click on “Under the Hood” and then “Content Settings”
    3. Find Javascript then click “Do not allow any site to run JavaScript” to disable, or “Allow all sites” to enable

    Enabling and Disabling Javascript in Firefox:

    1. Open Preferences and click on “Content”
    2. Check or uncheck the box next to “Enable Javascript”

    Toggling Javascript Off or On with Mobile Safari for iPhone, iPad, and iPod touch:

    1. Tap on Settings, then tap on “Safari”
    2. Switch Javascript to “ON” or “OFF” depending on your needs

    Generally speaking, most users should keep Javascript enabled on their web browser, but sometimes it must be disabled for specific purposes, for troubleshooting, performance, security, or a variety of other reasons. Also, you may find it to be disabled, in which case you may want to enable it.

    Regardless, remember to reenable Javascript to have a full web experience if you have disabled it temporarily. Javascript is heavily integrated in nearly every website in existence these days, and without it you will not have the complete modern web experience.

    These tricks apply to all versions of Safari, Chrome, Firefox, and iOS Safari, in Mac OS X, and for respective versions of the same web browsers on Windows and Linux too.