Benchmark: cached Intl.NumberFormat vs new Intl.NumberFormat vs toLocaleString vs String().toLocaleString currency loop

Tests:

cached Intl.NumberFormat
window.a = window.a || new Intl.NumberFormat('en-US', { style: 'decimal', maximumFractionDigits: 2, minimumFractionDigits: 2 }); for (let i = 10000; i< 10100; i++) { window.a.format(i) }
new Intl.NumberFormat
for (let i = 10000; i< 10100; i++) { new Intl.NumberFormat('en-US', { style: 'decimal', maximumFractionDigits: 2, minimumFractionDigits: 2 }).format(i); }
toLocaleString
for (let i = 10000; i< 10100; i++) { i.toLocaleString('en-US', { style: 'decimal', maximumFractionDigits: 2, minimumFractionDigits: 2 }) }
String().toLocaleString
for (let i = 10000; i< 10100; i++) { String(i).toLocaleString('en-US', { style: 'decimal', maximumFractionDigits: 2, minimumFractionDigits: 2 }) }

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: 13 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36 Edg/150.0.0.0

Browser/OS: Chrome 150 on Windows

String().toLocaleString

210K/s

cached Intl.NumberFormat

23K/s

new Intl.NumberFormat

587/s

toLocaleString

578/s

View exact numbers

cached Intl.NumberFormat vs new Intl.NumberFormat vs toLocaleString vs String().toLocaleString currency loop (version: 1)