Reduce vs. loop2

JavaScript performance comparison

Revision 3 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr = [];
  for (var i=0; i<50; i++) arr.push(Math.floor(Math.random() * 10000));

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Reduce
total = arr.reduce(function(curr_total, val) {
    return curr_total + val;
}, 0);
alert(total);
pending…
loop(cache length)
var sum = 0;
for (var i = 0, l = arr.length; i < l; i++) {
  sum += arr[i];
}
alert(sum);
pending…
loop
Array.prototype.myreduce = function(callback, init) {
    var total = init;
    for (var i=0, l=this.length; i<l; ++i)
       total = callback(total,this[i]);
    return total;
}

total = arr.myreduce(function(curr_total, val) {
    return curr_total + val;
}, 0);
alert(total);
pending…

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Revisions

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