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Run results for:
padStart vs splice vs conditional7345734734
Measures speed between using padStart and splice and conditional
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<iframe src="https://measurethat.net/Embed?id=554203" 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/128.0.0.0 Safari/537.36
Browser:
Chrome 128
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
splice
168.1M/s
condition
155.2M/s
236236
64.2M/s
padStart
54.8M/s
View exact numbers
Test name
Executions per second
✓
splice
168,113,568 Ops/sec
condition
155,154,064 Ops/sec
236236
64,177,036 Ops/sec
padStart
54,846,636 Ops/sec
Tests:
padStart
let x = 5; let res = ("" + x).padStart(2, "0")
splice
let x = 5; let res = ("0" + x).slice(-2)
condition
let x = 5; let res = x<10 ? `0${x}` : `${x}`
236236
function zeroPad(num, length) { let numStr = num.toString(); let numZeros = length - numStr.length; if (numZeros <= 0) { return numStr; // No padding needed } let padding = ''; while (numZeros > 0) { // Use bitwise operations to efficiently append zeros padding += '0'; numZeros--; } return padding + numStr; } let x = 5; let res = zeroPad(x, 2);