var global vs local 3

JavaScript performance comparison

Test case created by ahomegane

Preparation code

<script>
var a = 3;
</script>

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Testing in unknown unknown
Test Ops/sec
global
  function global() {
    var _b = 4;
    return a * _b;
  }

  global();
pending…
local
  function local() {
    var _a = a;
    var _b = 4;
    return _a * _b;
  }

  local();
pending…

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