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Generators are part of the ECMAScript 6 language specification. Firefox has supported the ECMAScript 6 compliant syntax for generators since 2013-12-10.[1] Node.js (server-side JavaScript) also has supported ES6 generator syntax[2] since 2013-05-15.[]


function* vehicle{
  var index = 0;
  while (index < 4)
    yield index++;

var firetruck = vehicle;
var car = vehicle;

console.log(; // 0
console.log(; // 1
console.log(; // 0
console.log(; // 2
console.log(; // 1
console.log(; // 3
console.log(; // undefined

The function* keyword creates a generator function.[3]

Further reading

(FIXME: Say a few more words about generators. Perhaps use some or all of the following as references:

"Generators in Node.js: Common Misconceptions and Three Good Use Cases". "Coroutines no, generators yes. Why coroutines won't work on the Web". "What Is This Thing Called Generators?". "callbacks vs generators vs coroutines".)


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  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.


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