Iteration protocols - JavaScript | MDN
Iteration protocols aren't new built-ins or syntax, but protocols. These protocols can be implemented by any object by following some conventions. There are two protocols: The iterable protocol and the iterator protocol. The iterable protocol allows JavaScript objects to define or customize their iteration behavior, such as what values are looped over in a for...of construct. Some built-in types a
for...of
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015. Learn more See full compatibility Report feedback The for...of statement executes a loop that operates on a sequence of values sourced from an iterable object. Iterable objects include instances of built-ins such as Array, String, TypedArray, Map, Set, NodeLis
Read Exploring ES6 | Leanpub
What you need to know about this book This book is about ECMAScript 6 (also called ECMAScript 2015), a new version of JavaScript. Audience: JavaScript programmers In order to understand this book, you should already know JavaScript. If you don’t: my other book “Speaking JavaScript” is free online and teaches programmers all of JavaScript (up to and including ECMAScript 5). Why should I read this b
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