JavaScript Versions

JavaScript Versions

In this tutorial, you will learn about JavaScript versions are as follows:

 

JavaScript history and Versions

• JavaScript was introduced as part of Netscape 2.0 browser.
• Microsoft soon released its own version called JScript.
• ECMA developed a standard language known as ECMAScript  
• ECMAScript edition 3 is widely supported and is what we call “JavaScript”.

ECMAScript Editions

Allows trailing commas for function parameters

 

Ver	Official Name	Description
ES1	ECMAScript 1 (1997)	First edition
ES2	ECMAScript 2 (1998)	Editorial changes
ES3	ECMAScript 3 (1999)	Added regular expressions Added try/catch Added switch Added do-while
ES4	ECMAScript 4	Never released
ES5	ECMAScript 5 (2009)	Added "strict mode" Added JSON support Added String.trim() Added Array.isArray() Added Array iteration methods Allows trailing commas for object literals
ES6	ECMAScript 2015	Added let and const Added default parameter values Added Array.find() Added Array.findIndex()
	ECMAScript 2016	Added exponential operator (**) Added Array.includes()
	ECMAScript 2017	Added string padding Added Object.entries() Added Object.values() Added async functions Added shared memory
	ECMAScript 2018	Added rest / spread properties Added asynchronous iteration Added Promise.finally() Additions to RegExp

Browser Support for ES6 (2015)

Browser	Version	Date
Chrome	51	May 2016
Firefox	52	Mar 2017
Edge	14	Aug 2016
Safari	10	Sep 2016
Opera	38	Jun 2016