If you want to edit JS file and not damage it, you should install dedicated software Of course, there are probably JS Online Editors available, but none of them will be able to provide such a wide range of available options as dedicated software.
The installation of the program that supports the JS file does not guarantee that the file can be edited. Additional information about the JS file extension can be found here.
This is the best way. Try to open the JS file with one of the programs and it will see if you can edit the JS file. The most proven method is to download the installer from the developer's website. You will find links to the software developers' websites on the subpage of each program. Examples of programs cooperating with JS files, which make it possible to edit it.
All available programs supporting the JS file
Remember that many file types have a text format and you can preview their contents by opening them, for example, with Windows Notepad. But beware - making manual changes to the JS file or another may result in its damage. After saving the changes, it may not be possible to reopen the JS file. For this reason, try to use software created to edit JS files.
It seems that one of the software on the list must be able to edit the JS files. Use other options if you still haven't found a way to edit JS. Verified websites with the option to edit the file in the JS format below.
Free Online File Edit Service
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