How to define setInterval function [duplicate]

Question

I'm using V8 in conjuction with c++ and native window setInterval functon is not defined.

What would be an algorythm to create something like native setInterval but in pure js?

Answer 1

Assuming setTimeout is available (not probable, but you did not specify that):

function setInterval(fn, t) {
  let id = {};

  function wrapper() {
    id.timeout = setTimeout(wrapper, t);
    fn.apply(this, arguments);
  }

  id.timeout = setTimeout(wrapper, t);

  return id;
}

function clearInterval(id) {
  clearTimeout(id.timeout);
}