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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Browser: Chrome 127

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

toLocalString

12.3M/s

Intl.NumberFormat With cached formatter

1.5M/s

Intl.NumberFormat

32K/s

View exact numbers

Test name	Executions per second
✓ toLocalString	12,293,094 Ops/sec
Intl.NumberFormat With cached formatter	1,500,707 Ops/sec
Intl.NumberFormat	32,078 Ops/sec

Script Preparation code:

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

Tests: