Javascript Array repeat_element(element)

Array.prototype.repeat_element = function(element)
{
     var repeat = false;
    /*from   ww w  . j  a v  a 2  s . c  om*/
     for (i=0;i<this.length;i++)
     {
         if(element==this[i])
             repeat = true;
     }
     
     return repeat;
}