function var global vs local

JavaScript performance comparison

Test case created by ahomegane

Preparation code

<script>
var a = 3;

function global() {
  var _b = 4;
  return a * _b;
}
function local() {
  var _a = a;
  var _b = 4;
  return _a * _b;
}
</script>

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Testing in unknown unknown
Test Ops/sec
global
global();
pending…
local
local();
pending…

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