typeof-prefix-for-property-checks

JavaScript performance comparison

Test case created by seb

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  function wrap(obj) {
    if (obj && obj._wrapped) return obj;
    return {_wrapped: obj};
  }
  
  function wrapFast(obj) {
    if (obj && typeof obj == 'object' && obj._wrapped) return obj;
    return {_wrapped: obj};
  }
  
  var wrapped = wrap( "foo" );

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
wrap( "foo" )
wrap( "foo" )
pending…
wrapFast( "foo" )
wrapFast( "foo" )
pending…
wrapFast( wrapped )
wrapFast( wrapped )
pending…

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