Enable JavaScript in the Firefox browser to take advantage of many features and make many websites work properly on your Windows 10 computer.


Open Firefox.

Go to the address bar, type about:config and press Enter.

To continue, click “Accept the Risk and Continue“.

Click on Show All and scroll down to find javascript.enable or type javacript in the search box.

Double click on javascript.enable to change the value to true.


To disable JavaScript in Firefox, proceed in the same way to enable JavaScript in Firefox. When you reach the “javascript.enable”, double click on it to change the value to false.