Instanceof vs Typeof function

JavaScript performance comparison

Test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  function test_func(func) {
    func(15);
    func(test_func);
    func("joey!");
    func([]);
    func({});
    func(function() {});
  }

};
</script>

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Typeof
test_func(function(x) {
  return (typeof x) == "function";
});
pending…
Instanceof
test_func(function(x) {
  return x instanceof Function;
});
pending…

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Revisions

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