operator vs method

JavaScript performance comparison

Test case created by RobG

Info

Compare the speed of typeof to a function call and type conversion.

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var obj = {name:'foo'};
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Typeof
typeof obj === 'number'
pending…
isNaN
!isNaN(parseFloat(obj))
pending…

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