Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .js

1 extension(s) and 1 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .js file?
  • Which program can create the .js file?
  • Where can you find a description of the .js format?
  • What can convert .js files to a different format?
  • Which MIME-type is associated with the .js extension?
.js
JavaScript .js file icon

JavaScript

JS file is a JavaScript. JavaScript is an interpreted computer programming language. It was originally implemented as part of web browsers so that client-side scripts could interact with the user, control the browser, communicate asynchronously, and alter the document content that was displayed.
Category: Development files
Application: Internet Explorer
Program name: -
Mime-type: text/javascript
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
-
Links:
-
Related extensions:
Hypertext Markup Language Document
Java Archive
Java Source Code
Cascading Style Sheets
JavaScript Style Sheet
Flash JavaScript
JavaScript Module
Handlebars Template
Rhino Compiled Javascript
.jss
JavaScript Style Sheet .jss file icon

JavaScript Style Sheet

JSS file is a JavaScript Style Sheet. JavaScript Style Sheets (JSSS) was a stylesheet language technology proposed by Netscape Communications Corporation in 1996 to provide facilities for defining the presentation of webpages.
Category: Development files
Application: Internet Explorer
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
js
Links:
-
Related extensions:
Hypertext Markup Language Document
Cascading Style Sheets
JavaScript
CSS Backup

Other types of files may also use the .js file extension. If you have helpful information about .js extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Haskell Source
MongoDB Namespace File
Google Science Journal Data
Cocoon JX Template
Modula-3 Intermediate Assembly File
Y86 Assembler Source Code
JamesZhu Browser Database
FlashGet Partial Download
netCDF Data

The .js filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

hs (12), ns (11), ys (1), ks (1), jx (1), je (1), is (1), sj (1), ms (1), jz (1), jw (1), jc (1)

Can't open a .js file?

If you want to open a .js file on your computer, you just need to have the appropriate program installed. If the .js association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.js

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android

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