Generator

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Generator generator function , .

Constructor

. Generator .

function* generator() {
  yield 1;
  yield 2;
  yield 3;
}

const gen = generator(); // "Generator { }"

console.log(gen.next().value); // 1
console.log(gen.next().value); // 2
console.log(gen.next().value); // 3

Generator.prototype.next(): yield yield .
Generator.prototype.return(): .
Generator.prototype.throw(): . ( )

. .

function* infinite() {
  let index = 0;

  while (true) {
    yield index++;
  }
}

const generator = infinite(); // "Generator { }"

console.log(generator.next().value); // 0
console.log(generator.next().value); // 1
console.log(generator.next().value); // 2
// ...

Specification
ECMAScript 2027 LanguageSpecification # sec-generator-objects

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This page was last modified on 2022 12 29 by MDN contributors.

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Generator

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