Run results for: cached Intl.NumberFormat vs toLocalString

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

toLocalString

28.5M/s

Intl.NumberFormat

64K/s

View exact numbers

Test name	Executions per second
✓ toLocalString	28,474,580 Ops/sec
Intl.NumberFormat	64,234 Ops/sec

Tests:

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