Javascript Number pad()

Number.prototype.pad = function () {
 if ( this < 10 ) {
  return '0' + this;
 }
 return this;/*from w ww.  ja  v a 2  s.co  m*/
}

"use strict";//from  www. j  a  va2 s.  c o m

Number.prototype.pad = function() {
 var s = this.toString();
 return (s.length < 4) ? ('000' + s).slice(-4) : s;
}