Simple generator example

simple-generator-example.js

function* foo() {
  yield 'a';
  yield 'b';
  yield 'c';
}

for (const val of foo()) {
  console.log(val);
}
// a
// b
// c

const [...values] = foo();
console.log(values); // ['a','b','c']

Hello! Sorry for commenting here...I have a question:
Why there's no next() but you can still iterate it in the for loop?

Because of yield and * generator syntax