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Run results for:
lastIndexOf vs split vs regex
testing speed
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<iframe src="https://measurethat.net/Embed?id=540810" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:129.0) Gecko/20100101 Firefox/129.0
Browser:
Firefox 129
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
lastIndexOf
2414.9M/s
split
14.3M/s
regex
6.9M/s
View exact numbers
Test name
Executions per second
✓
lastIndexOf
2,414,932,224 Ops/sec
split
14,326,296 Ops/sec
regex
6,945,606 Ops/sec
Script Preparation code:
var str = 'player/attack-bottom/1'
Tests:
lastIndexOf
const idx = str.lastIndexOf('/') const r1 = str.substring(0, idx) const r2 = str.substring(idx + 1, str.length)
split
const splited = str.split('/') const r1 = splited[0] const r2 = splited[splited.length - 1]
regex
const splited = str.match(/[^\/]+/g) const r1 = splited[0] const r2 = splited[splited.length - 1]