Web Reference: Feb 25, 2026 · Learn how JavaScript evolved from ES1 to modern ES6+ with real code examples. Compare old vs modern syntax and understand what each ECMAScript version brought. ECMAScript is the official name of the JavaScript standard. JavaScript was invented by Brendan Eich in 1995 and became an ECMA standard in 1997. The first ECMAScript versions were abbreviated by numbers. (ES1, ES2, ES3, ES5, ES6). From 2016, versions are named by year (ECMAScript 2016, 2017, 2018, ..., 2025). As a programming language, JavaScript is widely used in web development for creating interactive and dynamic user interfaces. It was created by Brendan Eich in 1995 under the name Mocha, which was later changed to LiveScript, and finally to JavaScript. The ECMAScript standard is developed and maintained by Ecma International, a Swiss-based standard...
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