JavaScript is builtin and there is no need to update JavaScript. It is more likely that you have some content blocking extension that is causing this issue.

If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.

• make sure your extensions and filters are updated to the latest version
• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

Firefox shows a blueish highlighted shield icon at the left end of the location/address bar in case Tracking Protection is blocking content. You can click shield icon for more detail and possibly disable the protection. You can check in the Web Console what content is blocked.

• "3-bar" menu button or Tools -> Web Developer
• https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop

Hello russcrawfordsc, I understand your problem where Javascript is disabled unintentionally for Facebook. You should see the javascript.void(0) on the bottom left. One way to fix that is to clear cache (Ctrl+Shift+Delete) then select the time range to delete. Click on all the little boxes and then, click okay. Below is a Screen Shot of what it should look like: Tell me if that helped and Stay Safe!

You should see the javascript.void(0) on the bottom left.

Seeing that when you hover a link actually does not indicate that JavaScript is disabled. It indicates that the page author has bypassed the usual behavior of a link and attached a script to it. For example:

<a href="javascript:void(0);" onclick="myscript();">Run my script</a>

(To see the real code of the link, right-click it and choose Inspect Element. That will open the Page Inspector and show you the HTML of that element.)

Oh wow! Your the real professional here @jscher2000