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First version 10 day 1995-> 1996 -> 1996 Mocha -> LiveScript -> JavaScript

https://www.udemy.com/course/the-complete-javascript-course/learn/lecture/22648209#overview

JScript - Microsoft

ECMA 1997 ES1 ECMAScript

2009 ES5(Ecmascript5) 2015 ES6/ES2015 -ECMAScript 2015 -серьёзные изменения

https://developer.mozilla.org/ru/docs/Web/JavaScript/Reference/Strict_mode