JavaScript - Versions

JavaScript was developed by Brendan Eich in 1995. It was standardized in 1997 by European Computer Manufacturers Association (ECMA) and officially known as ECMAScript. The first version of the language is known as ECMSScript 1 (abbreviated as ES1). The fist three versiosn (ES1, ES2, and ES3) laid the foundation of the language. The fourth version, ES4, was abandoned. The first main revision done in ES5(2009). The second major revised version is ES6 (ECMAScript 2015). After 2015, the versions are named by the year in which it it released.

The latest version of JavaScript is ECMAScript 2023.

JavaScript Versions

In the Below table, we have specified detailed information about each version.

Version	Official Name	Release Year	Features Added
ES1	ECMAScript 1	1997	First release
ES2	ECMAScript 2	1998	Minor changes
ES3	ECMAScript 3	1999	Added regular expressions Added do-while Added switch Added try/catch
ES4	ECMAScript 4	Never Released.
ES5	ECMAScript 5	2009	JavaScript strict mode Multiline strings String.trim() Array methods Object methods Getters and setters Trailing commas
ES6	ECMAScript 2015	2015	let and const statements Map and set objects Arrow functions For/of loop Some array methods Symbol Classes Promises JavaScript Modules New Number methods and properties For/of loop Spread operator
ES7	ECMAScript 2016	2016	Exponential (**) operator Array.includes() method
ES8	ECMAScript 2017	2017	Added Async/await Added Object.entries() method Added Object.values() method Added Object.getOwnPropertyDescriptor() method Added string padding
ES9	ECMAScript 2018	2018	Rest object properties JavaScript shared memory Promise.finally() method New features of the RegExp() object
ES10	ECMAScript 2019	2019	String trim.start() String trim.end() Array.flat() Revised Array.sort() Revised JSON.stringify() / toString() Object.fromEntries() method
ES11	ECMAScript 2020	2020	Nullish Coalescing Operator (??) BigInt primitive data type
ES12	ECMAScript 2021	2021	String.replaceAll() method Promise.Any() method
ES13	ECMAScript 2022	2022	The static block inside the class New class features Top-level await
ES14	ECMAScript 2023	2023	Array findLast() & findLastIndex() Hashbang Grammer Symbols as WeakMap keys

Since 2016, early update is being released with version named by the year of release. The update release in June 2023 is known as ECMAScript 2023.

Browser Support

All modern browsers fully support the ES1 to ES6. For other versions, you may use Polyfill and write the additional code.

Chrome	Firefox	Microsoft Edge	Opera	Safari	Firefox Android
Yes	Yes	Yes	Yes	Yes	Yes