Hello,

In Firefox 23, as part of an effort to simplify the Firefox options set and protect users from unintentially damaging their Firefox, the option to toggle JavaScript was removed from the Firefox Options window.

However, the option to toggle JavaScript was not removed from Firefox entirely. You can still access it from about:config or by installing an add-on.

about:config

1. In the address bar, type "about:config" (with no quotes), and press Enter.
2. Click "I'll be careful, I promise"
3. In the search bar, search for "javascript.enabled" (with no quotes).
4. Right click the result named "javascript.enabled" and click "Toggle". JavaScript is now enabled.

To Re-disable JavaScript, repeat these steps.

Add-ons

You can alternatively install an add-on that lets you toggle JavaScript on the fly, such as

• No-Script (to disable JavaScript on a per page basis, as required)
• QuickJava (to easily disable and enable JavaScript, automatic loading of images, and other content)
• SettingSanity (adds back removed options for JavaScript, Advanced JavaScript Settings, loading images, and showing the Tab Bar)

Thank you and I hope this helps!

Curtis

To avoid confusion:

• http://kb.mozillazine.org/JavaScript_is_not_Java

If you use extensions (Firefox/Tools > Add-ons > Extensions) that can block content (e.g. Adblock Plus, NoScript, Flash Block, Ghostery) then make sure that such extensions aren't blocking content.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe Mode start window.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes