function* idMaker() {
var index = 0;
while (true)
yield index++;
}
var gen = idMaker();
console.log(gen.next().value); // 0
console.log(gen.next().value); // 1
console.log(gen.next().value); // 2
console.log(gen.next().value); // 3
// ...//- With a generator function, values are not evaluated
//until they are needed.
//- Therefore a generator allows us to define a potentially
//infinite data structure.
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// define a generator function
function* generator_function() {
... .. ...
}
// creating a generator
const generator_obj = generator_function();