Cannot run javascript - options/content does not even show javascript

try using options/content - does not even show javascript option. i uninstalled program and re-installed and get the same result. using xp.

Is this a global problem that JavaScript is not running on any site? The on/off setting is still available in the about:config preferences editor.
(1) In a new tab, type or paste '''about:config''' in the address bar and press Enter. Click the button promising to be careful.
(2) In the search box above the list, type or paste '''java''' and pause while the list is filtered
(3) if '''javascript.enabled''' is bolded and set to false, double-click it to switch it back to true. This takes effect right away, but you'll need to reload the problem pages so Firefox re-reads the scripts.
Does that fix it or are particular sites still problematic?
One way that your normal default preferences could be changed is by an extension, and another is by external software creating a user.js file. If this problem recurs, you can investigate both of those.
* [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]]
* [[How to fix preferences that won't save]]

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