requestIdleCallback example

requestIdleCallback_example.js

//Forked -> https://developers.google.com/web/updates/2015/08/using-requestidlecallback

var tasks = [1,2,3,4];

function myNonEssentialWork (deadline) {
   console.log("myNonEssentialWork called", deadline.timeRemaining());
   let result="";

  while (deadline.timeRemaining() > 0 && tasks.length > 1) {
    for(let i=0; i<999999; i++) {result += Math.random()}
    console.log("do work ..", tasks);
    tasks.pop();
  }

  if (tasks.length > 1)
    requestIdleCallback(myNonEssentialWork, { timeout: 50 });
}

requestIdleCallback(myNonEssentialWork, { timeout: 50 });