Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var slice = Array.prototype.slice;
    
    function toArray(obj) {
      var arr = [];
      for (var i = 0, len = obj.length; i < len; i++) {
        arr[i] = obj[i];
      }
      return arr;
    }
    
    var test_arr1 = [];
    var test_arr2 = [];
    var test_arr3 = [];
    
    for (var i = 0; i < 10; i++) {
      test_arr1[i] = i;
    }
    
    for (var i = 0; i < 1000; i++) {
      test_arr2[i] = i;
    }
    
    for (var i = 0; i < 1000000; i++) {
      test_arr3[i] = i;
    }
  };
</script>

Test runner

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for (var i = 0; i < 100000; i++) {
  var temp = slice.call(test_arr1);
}

for (var i = 0; i < 100000; i++) {
  var temp = toArray(test_arr1);
}

for (var i = 0; i < 1000; i++) {
  var temp = slice.call(test_arr2);
}

for (var i = 0; i < 1000; i++) {
  var temp = toArray(test_arr2);
}

var temp = slice.call(test_arr3);

var temp = toArray(test_arr3);

var temp = slice.call(test_arr1);

var temp = toArray(test_arr1);

var temp = slice.call(test_arr2);

var temp = toArray(test_arr2);

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published on 24th December 2011
• Revision 2: published on 24th December 2011

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