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Run results for:
Unnecessary non-capturing groups
https://stackoverflow.com/questions/45291700/javascript-regex-non-capture-faster-than-no-parenthesis-at-all
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=608631" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36 Edg/136.0.0.0
Browser:
Chrome 136
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
unneededNonCaptureRE
3745181.2 Ops/sec
noNonCaptureRE
3813553.2 Ops/sec
anotherUnneededNonCapture
6989347.5 Ops/sec
anotherNoNonCapture
3985725.2 Ops/sec
indexOf
103205960.0 Ops/sec
Script Preparation code:
var loremString = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum." var unneededNonCaptureRE = /(?:z)+/ var noNonCaptureRE = /z+/ var anotherUnneededNonCapture = /lab(?:o)rum/ var anotherNoNonCapture = /laborum/
Tests:
unneededNonCaptureRE
unneededNonCaptureRE.exec(loremString)
noNonCaptureRE
noNonCaptureRE.exec(loremString)
anotherUnneededNonCapture
anotherUnneededNonCapture.exec(loremString)
anotherNoNonCapture
anotherNoNonCapture.exec(loremString)
indexOf
loremString.indexOf('laborum')