How to Enable JavaScript in Firefox

JavaScript -- not to be confused with the programming language -- is a scripting language . Many websites use JavaScript to help with page layout or function, so Firefox has JavaScript turned on by default. If the feature gets disabled, however, every version of the browser since 23 has the setting to re-enable JavaScript hidden on the about:config page.

Video of the Day

Step 1:

Browse to about:config in any Firefox window. On the warning page, press I'll Be Careful, I Promise! to enter the configuration page.

Step 2:

Type JavaScript in the search bar on the page to filter the list to the settings that concern JavaScript.

Find the JavaScript setting.
credit: Image courtesy of Mozilla

Step 3:

Find the entry titled javascript.enabled and double-click it to switch the value column to read "true" instead of "false."

Turn on JavaScript.
credit: Image courtesy of Mozilla

Step 4:

Refresh any other open tabs or windows to reload the pages with JavaScript enabled.

The NoScript menu has options to allow or block JavaScript.
credit: Image courtesy of NoScript
Show Comments