Create a unique number with javascript time

Question

I need to generate unique id numbers on the fly using javascript. In the past, I\'ve done this by creating a number using time. The number would be made up of the four digi

Answer 1

Maybe even better would be to use getTime() or valueOf(), but this way it returns unique plus human understandable number (representing date and time):

window.getUniqNr = function() {
  var now = new Date(); 
  if (typeof window.uniqCounter === 'undefined') window.uniqCounter = 0; 
  window.uniqCounter++; 
  var m = now.getMonth(); var d = now.getDay(); 
  var h = now.getHours(); var i = now.getMinutes(); 
  var s = now.getSeconds(); var ms = now.getMilliseconds();
  timestamp = now.getFullYear().toString() 
  + (m <= 9 ? '0' : '') + m.toString()
  +( d <= 9 ? '0' : '') + d.toString() 
  + (h <= 9 ? '0' : '') + h.toString() 
  + (i <= 9 ? '0' : '') + i.toString() 
  + (s <= 9 ? '0' : '') + s.toString() 
  + (ms <= 9 ? '00' : (ms <= 99 ? '0' : '')) + ms.toString() 
  + window.uniqCounter; 

  return timestamp;
};
window.getUniqNr();