text: var t1 = performance.now();
  
  var str = "";
  
  for(var i = 0; i < 1000; i++)
  {
  	str += i;
  }
  
  var t2 = performance.now();
  
  console.log(performance.timeOrigin);
  console.log(t1);
  console.log(t2);
  console.log("Perf: " + (t2 - t1) + "ms");