JS: ECMAScript New Features

What is ECMAScript, ECMA-262

• ECMAScript is the specification name for JavaScript.
• ECMAScript is also known as ECMA-262, because it's number 262 of the spec organization called Ecma International.

• ECMAScript 2015 (aka ES6, ES2015, JS2015) is a major revision of the JavaScript language.
• ECMAScript 2015 is also known as ECMAScript 6 (ES6), because it is edition 6.

New Version Each Year

Since 2015, new features are added to JavaScript the language each year.