jb default assignment

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var a, b;
   
    function ta() {
      a = a || {};
    }
   
    function tb() {
      if (!b) {
        b = {}
      };
    }
};
</script>

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Testing in unknown unknown
Test Ops/sec
a
ta();
a = undefined;
pending…
b
tb();
b = undefined;
pending…

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