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Run results for:
JS string includes vs indexOf
JS string includes vs indexOf
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<iframe src="https://measurethat.net/Embed?id=600221" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
String.prototype.includes
124485.1 Ops/sec
String.prototype.indexOf
505621.0 Ops/sec
Script Preparation code:
var str = ''; var i = 0; while (i <= 1E5) str += i++; str += 'end';
Tests:
String.prototype.includes
const item = str.includes('end');
String.prototype.indexOf
const index = str.indexOf('end');