Q423: What are the different kinds of generators - JavaScript Internals (521 Qs)

There are five kinds of generators,

Generator function declaration:

javascript

    function* myGenFunc() {
      yield 1;
      yield 2;
      yield 3;
    }
    const genObj = myGenFunc();

Generator function expressions:

javascript

    const myGenFunc = function* () {
      yield 1;
      yield 2;
      yield 3;
    };
    const genObj = myGenFunc();

Generator method definitions in object literals:

javascript

    const myObj = {
      *myGeneratorMethod() {
        yield 1;
        yield 2;
        yield 3;
      },
    };
    const genObj = myObj.myGeneratorMethod();

Generator method definitions in class:

javascript

    class MyClass {
      *myGeneratorMethod() {
        yield 1;
        yield 2;
        yield 3;
      }
    }
    const myObject = new MyClass();
    const genObj = myObject.myGeneratorMethod();

Generator as a computed property:

javascript

    const SomeObj = {
      *[Symbol.iterator]() {
        yield 1;
        yield 2;
        yield 3;
      },
    };

    console.log(Array.from(SomeObj)); // [ 1, 2, 3 ]