Run results for: Intl.NumberFormat vs string

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

toLocalString

175.9M/s

Intl.NumberFormat

53K/s

View exact numbers

Test name	Executions per second
✓ toLocalString	175,856,576 Ops/sec
Intl.NumberFormat	52,669 Ops/sec

Script Preparation code:

const priceCurrency = "CZK"
const price = "121.0"

Tests:

Intl.NumberFormat
return new Intl.NumberFormat('cs-CZ', { style: 'currency', currency: priceCurrency , minimumFractionDigits: 0 }).format(Number(price));
toLocalString
return `${priceCurrency} ${price}`;