Test case details

Preparation Code

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.1.5/angular.min.js"> </script> <script>   var len = 1000;   var arr = new Array();   while (len--) {     arr[len] = len;   } </script>

Test cases

Test #1

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

Test #2

angular.forEach(arr, function(item) {item;});

Test #3

for (var key in arr) {   arr[key]; }

Test #4

for (var i = 0; i < arr.length; i++) { arr[i] };