JS File: What is it?

Researcher:   |   Revised: November 30, 2018

Microsoft Silver

JS File Summary

Most JS files can be viewed with thirteen known software applications, typically Notepad++ developed by Don Ho. It's main file type association is the JavaScript File format, but also includes one other rarely-seen file types. JS files are categorized ordinarily as Web Files. Other file types can be Developer Files.

The JS File Extension can be viewed on the Windows, Mac, and Linux operating systems. They are supported on both desktop and mobile devices. With a Popularity Rating of "Low", these files are not very common to your average computer user.

If you are having problems opening JS files, or would simply like to learn more about the software programs and developers that are associated with them, please see the complete information contained below.

Low
Demand
8253
Standing

/ 11690

Active

Relevance

30

November

2018

Amended

Open your files in %%os%% with FileViewPro File Viewer

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Types of JS Files

  2 known file types use this extension

Leading JS Type

.JS
Extension:.js
File Type:JavaScript File

A JS file is used to execute JavaScript instructions in web pages. Functions that can be performed include opening and closing windows, creating drop-down menus, enabling rollover images, or validating form fields.

Company: NetScape
Class:Web Files
Folder: HKEY_CLASSES_ROOT\.js

Software Programs That Open The JavaScript File:


Notepad++ by Don Ho

Windows
Mac
Linux

MacroMates TextMate by MacroMates

Mac

Google Chrome by Google

Windows
Mac
iOS
Android
Linux

Microsoft Edge by Microsoft Corporation

Windows

Adobe Dreamweaver by Adobe Systems Incorporated

Windows
Mac

Apple TextEdit by Apple

Mac

ES-Computing Edit Plus by ES-Computing

Windows

Apple Safari by Apple

Windows
Mac
iOS
Android
Linux
Solaris
illumos

Adobe GoLive by Adobe Systems Incorporated

Windows
Mac

OpenOffice Writer by Apache Software Foundation

Windows
Linux
Solaris
OS X El Capitan

IntelliJ IDEA by JetBrains

Windows
Mac
Linux

Corel WordPerfect by Corel

Windows

Alternative JS Types

.JS
Extension:.js
File Type:JACOsub Script

JS file is a script used by JACOsub, an open source software designed for displaying timed sequences of titles and graphics over a video.

Company: Open Source
Class:Developer Files

Software Programs That Open JACOsub Script Files:


JACOsub by Open Source

Compatible with:

Amiga

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JS Demand


OS Rank

Windows (97.14%)
Macintosh (2.06%)
Linux (0.73%)
Chrome (0.05%)
Other (0.01%)

OS Popularity

Windows (82.33%)
Android (11.56%)
iOS (3.43%)
Macintosh (1.71%)
Linux (0.60%)


Sources of JS Problems


Frequent JS Opening Issues

Missing Notepad++

You encounter an error message such as "%%os%% Can't Open JS Files" when trying to open your JS. Generally, this is experienced in %%os%% because Notepad++ isn't installed on your PC. The typical path of opening your JS with a double-click won't work because %%os%% cannot make the program connection.


Tip: When another JS application is installed, you can choose to open it by selecting "Show Apps" and using that program.


Notepad++ Requires Update

Sometimes your installed version of Notepad++ won't support your JavaScript File file. Download the latest Notepad++ version from the Don Ho website to ensure you have the correct one installed. The primary cause of this problem is that your JavaScript File file was created by a different (newer) version of Notepad++ than what's installed.


Tip: Investigate your JS file by right-clicking and selecting "Properties" to find clues on what version you need.


Primarily, problems experienced when opening JS files are due to having the incorrect version of Notepad++ installed on your computer.


Other Causes of JS File Opening Problems

In the majority of cases, installing the right version of Notepad++ will resolve your issue. Other JS opening errors can be created by other system problems inside of %%os%%. Additional factors include:

  • Corrupt Windows Registry file path references for JS
  • Mistaken removal of the Windows registry JS description
  • Corrupt install of Notepad++ or other JS-related program
  • Something has caused file corruption of your JS
  • The JS is infected with a virus
  • JS-related hardware has device drivers that obsolete
  • Too many applications are open on your PC to load your JavaScript File file successfully

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