The js file extension is related to the ECMAScript scripting language and used for its source code files.

There are 3 other file types using
the JS file extension!

js icon.js - JavaScript source code script [common]

empty icon.js - JACOsub script file

js icon.js - Mozilla (Netscape) settings file

Detailed description

Software that works with js file extension

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JS file extension - ECMAScript language file

What is js file? How to open js files?

File type specification:

Source code and script file type icon Source code and script file type

The js file extension is used for files written in ECMAScript language.This ECMA Standard is based on several originating technologies, the most well known being JavaScript (Netscape) and JScript (Microsoft).

The language was invented by Brendan Eich at Netscape and first appeared in that company’s Navigator 2.0 browser. It has appeared in all subsequent browsers from Netscape and in all browsers from Microsoft starting with Internet Explorer 3.0.

The development of this Standard started in November 1996. The first edition of this ECMA Standard was adopted by the ECMA General Assembly of June 1997.

That ECMA Standard was submitted to ISO/IEC JTC 1 for adoption under the fast-track procedure, and approved as international standard ISO/IEC 16262, in April 1998.

Mime: application/ecmascript

The default software associated to js file type:

Netscape Navigator icon

AOL Inc. logoNetscape Navigator  Microsoft Windows software

Company or developer:
AOL Inc.

Netscape Navigator was multi-platform web browser popular in the 1990's. The project was discontinued in 2007. The last versions of Navigator was based on Firefox Gecko core.

Help how to open JS files:

Use any text editing tool to view content of the *.js files.

How to convert file with extension JS:

Currently there is no specific information available, about how to convert this file extension.

For general information try to look at:
Basic info how to convert source code or script files

List of software applications associated to the .js file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux etc.) and possible program actions
that can be done with the file
: like open js file, edit js file, convert js file, view js file, play js file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting js files.

  • Open js file
  • Edit js file

Software that open js file - ECMAScript language file

Click on the link to get more information about listed programs for open js file action.

Microsoft Windows:

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