indexOf check

JavaScript performance comparison

Test case created by aelgoa

Info

different ways to do array checks with indexOf

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var a=[],c=50000;
    while(--c){
      a.push('1');
    }
    a.push('2');
};
</script>

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Testing in unknown unknown
Test Ops/sec
!=-1
a.indexOf('2')!=-1;
pending…
!!~
!!~a.indexOf('2');
pending…

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