Date string formatted as yyyymmdd using javascript

get_yyyymmdd.js

Date.prototype.yyyymmdd = function() {
   var yyyy = this.getFullYear().toString();
   var mm = (this.getMonth()+1).toString(); // getMonth() is zero-based
   var dd  = this.getDate().toString();
   return yyyy + (mm[1]?mm:"0"+mm[0]) + (dd[1]?dd:"0"+dd[0]); // padding
  };
  
d = new Date();
d.yyyymmdd();