YDKJS generator example

4.1.2.js

let z = 1;

function *foo() {
	const x = yield 2;
	z++
	const y = yield (x*z)
	console.log(x, y, z)
}

const it_first = foo()
const it_second = foo()

let first_value = it_first.next().value;
console.log(first_value)
let second_value = it_second.next().value
console.log(second_value)

first_value = it_first.next(second_value * 10)
// const x = yield
// .value = x*z
.value;
console.log(first_value)
second_value = it_second.next(first_value * 5).value
console.log(second_value)

it_first.next(second_value / 2)
it_second.next(first_value / 4)