question about variable scoping

JavaScript performance comparison

Test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  function a() {
      var x = "Some string";
      function inner() {
          console.log(x);
      }
      for (var i = 0; i < 1000; i++) {
          inner();
      }
  }
  function b() {
      function inner() {
          var x = "Some string";
          console.log(x);
      }
      for (var i = 0; i < 1000; i++) {
          inner();
      }
  }

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
a
a();
pending…
b
b();
pending…

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