Run results for: Intl.NumberFormat vs toLocalString

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.1.1

Device Platform: Mobile

Date tested: one year ago

toLocalString

30.5M/s

Intl.NumberFormat

51K/s

View exact numbers

Test name	Executions per second
✓ toLocalString	30,488,516 Ops/sec
Intl.NumberFormat	51,111 Ops/sec

Tests:

Intl.NumberFormat
var a = new Intl.NumberFormat("en-US").format("10000");
toLocalString
var a = "10000".toLocaleString("en-US");