Javascript String endsWith(value)

// Extension method endsWith for string object
String.prototype.endsWith = function (value) {
    return this.indexOf(value, this.length - value.length) != -1;
};

String.prototype.endsWith = function(value) {
 if (!value)/*  w  w  w  . ja  va2 s.c  o  m*/
  return false;
 if (value.length > this.length)
  return false;

 var end = this.substring(this.length - value.length);
 return end === value;
};