Once var init

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var myVar = undefined;
};
</script>

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Testing in unknown unknown
Test Ops/sec
With IF
if (!myVar) {
  myVar = {
    foo: 'bar'
  };
}
pending…
Without IF
myVar = myVar || {
  foo: 'bar'
};
pending…

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