prealloc vs no prealloc

JavaScript performance comparison

Test case created by

Preparation code

<script>
function FooPrealloc() {
  this.data = null;
}
FooPrealloc.prototype.foo = function () {
  this.data = {};
};

function FooNoPrealloc() {
}
FooNoPrealloc.prototype.foo = function () {
  this.data = {};
};
</script>
    

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
prealloc
var foo = new FooPrealloc();
foo.foo();
pending…
no prealloc
var foo = new FooNoPrealloc();
foo.foo();
pending…

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