extension check regex vs indexOf

JavaScript performance comparison

Test case created by ngryman

Info

Battle for comparing if a filename matches a set of extensions.

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var filename = '/images/profile.jpg';
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
regex
filename.match(/(?:html|css|js|png|jpg)$/);
pending…
indexOf
'html|css|js|png|jpg'.indexOf(filename.substr(filename.lastIndexOf('.') + 1))
pending…

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