Firefox is a free and open-source web browser developed by the Mozilla Foundation. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards.
If JavaScript is disabled in your Firefox web browser, some websites may not work properly or not work at all.
Follow these steps to enable JavaScript:
1. Click on the Address Bar
It’s the same area where you type a website or search query.
2. Visit Advanced Preferences
Type in about:config in the address bar to open Advanced Preferences option in Firefox. Unfortunately, firefox doesn’t allow advance settings to be edited in the setting menu.
3. Accept the Warning!
Access the warning and click on Accept the Risk and Continue. about:config opens up advance options to customize Firefox. Be cautious when editing anything in there.
5. Search ‘JavaScript’ in search-box.
You will be presented with a big search bar. Type JavaScript and Firefox will show all settings related to JavaScript.
6. Find ‘javascript.enabled’ setting
After searching for JavaScript, Firefox will show all related settings. Find the javascript.enabled setting. If it shows false next to it, it means your browser has JS disabled. Click the icon next to it to enable. The false text will change to true.
If it shows true, it’s already enabled. You do not need to change any setting.
JavaScript is now enabled in your Mozilla Firefox browser.