push method vs setting via key

JavaScript performance comparison

Revision 15 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var a = [];
  

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
push method
for(var i = 0; i < 1000; i++) {
    a.push(Math.random());
}
pending…
index method
for(var i = 0; i < 1000; i++) {
    a[i] = Math.random();
}
pending…
length method
for(var i = 0; i < 1000; i++) {
    a[a.length] = Math.random();
}
pending…
work
for(var i = 0; i < 100; i++) {
    if (i >= a.length) {
        a.length += 10;
        a[i] = Math.random();
    } else {
        a[i] = Math.random();
    }
}
pending…

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