Javascript Array inArray(needle) method

Array.prototype.inArray = function(needle) {
        for(var i=0; i < this.length; i++) {
                if(this[i] === needle) {
                        return true;
                }/*from www.  ja v  a 2s .  co  m*/
        }
        return false;
}

Array.prototype.inArray=function(needle){
    for(var i=0;i<this.length;i++){
      if(this[i]===needle){
        return true;
      }/*w  w w .  ja v  a2 s. c  o m*/
    }
    return false;
  }
  var arr=["red","blue","yellow"];
  console.log(arr.inArray("blue"));