JS Versions

1. JavaScript

• was invented by Brendan Eich in 1995
• became an ECMA standard in 1997
• ECMA-262 is the official name of the standard
• ECMAScript is the official name of the language

2. ECMA

• 一家國際性會員制度的資訊和電信標準組織
• 1994年之前，名為歐洲計算機製造商協會（European Computer Manufacturers Association）
• 1994年之後，因為計算機的國際化，改名Ecma國際（Ecma International）

3. Versions and Important Changes

• ECMAScript 2015 是正式名稱
• ES6 類似暱稱

• ES1 (1997): First Edition.
• ES2 (1998)
• ES3 (1999)
• ES4 (Never released)
• ES5 (2009): Added JSON support / strict mode.
• ES6 (2015): Added classes and modules.
• ES7 (2016): Added exponential operator (**) / Array.prototype.includes.
• ES8 (2017): Added string padding / new Object properies/Async functions / Shared Memory.
• ES9 (2018): Added rest/spread properties / Asynchronous iteration / Promise.finally() / Additions to RegExp.
• More: JS Versions