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JS Iterables

Home Made Iterable:

// Home Made Iterable
function myNumbers() {
  let n = 0;
  return {
    next: function() {
      n += 10;
      return {value:n, done:false};
    }
  };
}

// Create Iterable
const n = myNumbers();
n.next(); // 10
n.next(); // 20
n.next(); // 30

document.getElementById("demo").innerHTML = n.next().value;