Javascript In Array Like PHP

    Array.prototype.in_array = function(p_val)

    {

        for(var i = 0, l = this.length; i < l; i++) {

            if(this[i] == p_val) {

                return
true;

            }

        }

        return
false;

    }

 

Sumber : http://snippets.dzone.com/posts/show/4653

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