JavaScript Sleep() 2

I found an article Implementing Wait in JavaScript, wrote by Josef Betancourt


This is his example

function Pause(duration, busy){
 this.duration= duration * 1000;
 this.busywork = null;
 this.runner = 0;
 if (arguments.length == 2) {
  this.busywork = busy;
 }
 this.pause(this.duration);
}

Pause.prototype.pause = function(duration){
 if ( (duration == null) || (duration < 0)){
   return;
 }
  var later = (new Date()).getTime()+duration;
   while(true){
    if ((new Date()).getTime() > later){
    break;
   }
  this.runner++;
  if (this.busywork != null) {
   this.busywork(this.runner);
  }
 } // while
} // pause method

to use

function showme(progIndex){
 window.status= "progress: " + progIndex;
}
 var p = new Pause(5, showme);

visit Implementing Wait in JavaScript page.