Run results for: Intl.NumberFormat vs toLocalString vs Intl.NumberFormat instantiated

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Intl.NumberFormat	44882.0 Ops/sec
toLocalString	23684994.0 Ops/sec
Intl.NumberFormat instantiated	2930437.8 Ops/sec

Script Preparation code:

var formatter = Intl.NumberFormat("en-US")

AخA
 
var formatter = Intl.NumberFormat("en-US")

Tests:

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