Key Missing

JavaScript performance comparison

Test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
      var map = {
      a: 1,
      b: 1,
      c: 1,
      d: 1,
      e: 1,
      f: 1,
      g: 1,
      h: 1,
      i: 1,
      j: 1,
      k: 1,
      l: 1,
      m: 1,
      n: 1,
      o: 1,
      p: 1
      };
      var key = 'z';
      function lookup(x) {
        return map[x];
      }

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
map[key]
map[key]
pending…
key in map
key in map
pending…
map.hasOwnProperty(key)
map.hasOwnProperty(key)
pending…
lookup(key)
lookup(key)
pending…

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