November 2019
Beginner
804 pages
20h 1m
English
Content preview from Learn TypeScript 3 by Building Web Applications
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ECMAScript evolution and support
The version of JavaScript that most developers around the world are familiar with is ES5, which was released in 2009. It included strict mode, accessors, syntax changes, meta-programming, and, most importantly, support for JSON.
Since 2015, ECMAScript, and thus JavaScript, has rapidly evolved. The specification now has a yearly release schedule, meaning that a new version is released each year. Thanks to this evolution, each year, all of the language change proposals that are mature enough get included in the new version of the specification. This follows a trend that we can see throughout the industry to increase the pace at which things evolve. It is very disruptive for large enterprises but is great for ...
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