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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.[citation needed]


exampleEdit

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

var firetruck = vehicle();
var car = vehicle();

console.log(car.next().value); // 0
console.log(car.next().value); // 1
console.log(firetruck.next().value); // 0
console.log(car.next().value); // 2
console.log(firetruck.next().value); // 1
console.log(car.next().value); // 3
console.log(car.next().value); // undefined


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

Further readingEdit

ReferencesEdit