.JS File Extension

There are 2 file types use the .JS file extension:

  1. JavaScript File
  2. JScript Executable Script

1. JavaScript File

JavaScript File
  • Developer N/A
  • Popularity
    3.9 (202 votes)
  • Category Web Files
  • Format Text

A JS file is a text file containing JavaScript code that is used to execute JavaScript instructions in webpages. It may include functions that open and close windows, validate form fields, enable rollover images, or create dropdown menus.

JS files are referenced by webpages that incorporate JavaScript functions. They are usually imported in the <head> or <body> sections of the HTML. JS files are helpful when the same JavaScript code is used in multiple webpages as they allow the different pages to reference the code in the one external JS file.

Updated: February 12, 2019

2. JScript Executable Script

JScript Executable Script

Executable script written in JScript, Microsoft's version of JavaScript

Software's name License Platforms
Windows-based script host (Wscript.exe) Windows-based script host (Wscript.exe) Windows

Updated: May 25, 2021

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