Javascript - Script

About

A Javascript script is script file with a js extension.

Type

Browser

A browser script is a run that is run by the browser where Javascript is:

in a page via the script element: Browser - Javascript
in a browser extension created by user: Browser - Userscript (user.js)

In browser, the following javascript features are implemented:

the ECMAScript Standard (basic feature)
and the Web API (browser API)

Node

A node script runs in Node (ie on the server or on a laptop)

In Node, the following javascript features are implemented:

the ECMAScript Standard (basic feature)
and the Node Api (File System, …)

Other engine

Or in any other engine