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Run results for:
padStart vs slice vs string
Measures speed between using padStart and slice and string
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<iframe src="https://measurethat.net/Embed?id=585474" 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/132.0.0.0 Safari/537.36
Browser:
Chrome 132
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
string
106.7M/s
splice
101.8M/s
padStart
35.9M/s
View exact numbers
Test name
Executions per second
✓
string
106,650,968 Ops/sec
splice
101,823,456 Ops/sec
padStart
35,881,208 Ops/sec
Tests:
padStart
let x = "5"; let res = x.padStart(2, "0")
splice
let x = "5"; let res = ("0" + x).slice(-2)
string
let x = 5; let res = x < 10 ? `0${x}` : `${x}`