January 2020
Intermediate to advanced
470 pages
11h 13m
English
Content preview from Mastering JavaScript Functional Programming - Second Edition
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Going functional with JavaScript
JavaScript has evolved through the years, and the version we'll be using is (informally) called JS10, and (formally) ECMAScript 2019, usually shortened to ES2019 or ES10; this version was finalized in June 2019. The previous versions were as follows:
- ECMAScript 1, June 1997
- ECMAScript 2, June 1998, which was basically the same as the previous version
- ECMAScript 3, December 1999, with several new functionalities
- ECMAScript 5, December 2009 (and no, there never was an ECMAScript 4, because it was abandoned)
- ECMAScript 5.1, June 2011
- ECMAScript 6 (or ES6; later renamed ES2015), June 2015
- ECMAScript 7 (also ES7, or ES2016), June 2016
- ECMAScript 8 (ES8 or ES2017), June 2017
- ECMAScript 9 (ES9 or ES2018), June 2018 ...
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