Math.floor, parseInt and left shift

JavaScript performance comparison

Revision 10 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  i = Math.ceil((Math.random() * 10000)).toString();

};

Benchmark.prototype.teardown = function() {
  i = undefined;

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
+
var j = +i
pending…
bitwise or
var j = i | 0
pending…
bitwise not
var j = ~~i;
pending…
left shift
var j = i << 0;
pending…
parseInt()
var j = parseInt(i);
pending…
Math.floor()
var j = Math.floor(i);
pending…

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Revisions

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