Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var ar = [];
    
    for (var i=0;i<10;i++) {
    ar.push('ohaowahf');
    }
  };
</script>

Test runner

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ar.forEach(function(item){
});

var item;
while(item = ar.shift()) {};

for (var i=0,l=ar.length;i<l;i++) { var item = ar[i]; }

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