startsWith vs regexp vs indexOf

JavaScript performance comparison

Revision 21 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var regexp = /^Lorem/;
};
</script>

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Testing in unknown unknown
Test Ops/sec
startsWith
if ('Lorem ipsum dolor sit amet'.startsWith('Lorem')) {}
pending…
indexOf
if ('Lorem ipsum dolor sit amet'.indexOf('Lorem') === 0) {}
pending…
RegExp
if (regexp.test('Lorem ipsum dolor sit amet')) {}
pending…

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