Run results for: cached Intl.NumberFormat vs toLocaleString

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36

Browser: Chrome 101

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
cached Intl.NumberFormat	1042027.0 Ops/sec
toLocaleString	16931670.0 Ops/sec

Tests:

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