JS isArray Comparison

JavaScript performance comparison

Revision 16 of this test case created by Mark Penner

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var a = [];

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
a.constructor w/ null check
a && a.constructor === Array
pending…
toString
Object.prototype.toString.call(a) === '[object Array]'
pending…
instanceof
a instanceof Array
pending…
isArray
Array.isArray(a)
pending…
a.constructor
a.constructor === Array
pending…

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