let vs var

JavaScript performance comparison

Test case created by Flaeron

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  function letExample() {
    let x = 0;
    for (let i = 0; i < 1000000; i++){
        x = x + i;
    }
  }
  
  function varExample() {
    var x = 0;
    for (var i = 0; i < 1000000; i++){
        x = x + i;
    }
  }

};
</script>

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
let
letExample();
pending…
var
varExample();
pending…

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