caching-vars

JavaScript performance comparison

Test case created by Bart Veneman

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var add = function() {
        return 2 + 3 - 4 * 6 + 5;
        };
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
without-cache
console.log(add());

(function() {
  return add() + add();
})();
pending…
with cache
var sum = add();
console.log(sum);
(function() {
  return sum + sum;
})();
pending…

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