JS File Type

- The quick facts

What are JS files and how to open them

Are you having problems opening a JS file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a JS file?

Files containing the .js extension are most commonly associated with JavaScript files. These JS files contain JavaScript code that is used to execute instructions in a Web page that uses client-side scripting. The functions may include the validation of form fields, rollover images, drop-down menu creation and other functions.

The .js file extension is also used for JACOsub script files, JetScript output files, Netscape settings files and ECMAScript language files.

How to open JS files

Important: Different programs may use files with the JS file extension for different purposes, so unless you are sure which format your JS file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different JS openers which you will find listed below.

Last updated: March 9, 2022

Suggest another file format using extension JS

While we know of one file format using the .JS file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .JS file.

Various apps that use files with this extension

These apps are known to open certain types of JS files. Remember, different programs may use JS files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Adobe DreamweaverAdobe DreamweaverUser submitted
Macromedia Dreamweaver MXMacromedia Dreamweaver MXUser submitted
Microsoft Web Platform ExtensionsMicrosoft Web Platform ExtensionsUser submitted
UltraEditUltraEditUser submitted
Aptana StudioAptana StudioUser submitted
Edge Code CCEdge Code CCUser submitted
Macromedia DreamweaverMacromedia DreamweaverUser submitted
BracketsBracketsUser submitted
BluefishBluefishUser submitted
WLSwitchWLSwitchUser submitted