Reduce vs. loop

JavaScript performance comparison

Revision 21 of this test case created by Peter Todd

Preparation code


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

};
</script>

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
loop (for .. of)
let sum = 0;
for (const v of arr) {
  sum += v;
}
pending…
loop
let sum = 0;
for (let i = 0; i < arr.length; i++) {
  sum += arr[i];
}
pending…
loop (for .. in)
let sum = 0;
for (const v in arr) {
  sum += v;
}
pending…
Reduce
total = arr.reduce(function(curr_total, val) {
    return curr_total + val;
}, 0);
pending…
forEach
let sum = 0;
arr.forEach(v => sum += v);
pending…

Revisions

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