Run results for: padStart vs while loop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

51.4M/s

45.0M/s

View exact numbers

Test name	Executions per second
✓ 1	51,404,908 Ops/sec
2	44,996,892 Ops/sec

Tests:

1
let stringValue = "9"; let zeroCount = 4 - stringValue.length; while (zeroCount-- > 0) { stringValue = '0' + stringValue; }
2
let stringValue = "9"; let zeroCount = 4 - stringValue.length; stringValue.padStart(4, "0");