ECMAScript or ES is specification of programming language to be used commonly for client side processing on World wide web. It is standardized by ECMA International organization.
Javascript can be termed as concrete implementation of ECMAScript standard. That means Javascript syntax should confirm to standards of ECMAScript & to be supported across all kinds of system.
HelloWorld Example,
HelloWorld.js
/**
*
*/
var message = "Hello World, I am being run by NPM"
console.log("message ::"+message);
Output
