array.contains v jquery inarray

JavaScript performance comparison

Test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
Array.prototype.contains = function ( needle ) {
   for (i in this) {
       if (this[i] == needle) return true;
   }
   return false;
}
</script>
<script>
Benchmark.prototype.setup = function() {
    var my_array = [1,2,3,4,5,6,7,8,9,10];
};
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
Array.prototype
my_array.contains(4);
pending…
jQuery.inArray
$.inArray(4, my_array);
pending…

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