Benchmark: Intl.NumberFormat vs toLocalString vs string split & reduce

Script Preparation code:

var nf = new Intl.NumberFormat("en-US")

function pricize (num) {
  const pieces = num.toString().split('')
  const len = pieces.length
  return pieces.reduce((result, chr, index, array) => {
    const pos = len - index
    result += (index !== 0 && pos % 3 === 0) ? ',' + chr : chr
    return result
  }, '')
}

Tests:

toLocalString
var a = (10000).toLocaleString("en-US");
Intl.NumberFormat
var a = nf.format(10000)
string split & reduce
var a = pricize(10000)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
toLocalString
Intl.NumberFormat
string split & reduce

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Safari/605.1.15

Browser/OS: Safari 15 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
toLocalString	44500.2 Ops/sec
Intl.NumberFormat	3026783.0 Ops/sec
string split & reduce	5945991.0 Ops/sec

Intl.NumberFormat vs toLocalString vs string split & reduce (version: 0)

Comparing performance of: toLocalString vs Intl.NumberFormat vs string split & reduce

Created: 3 years ago by: Guest

Jump to the latest result

toLocalString

Intl.NumberFormat

string split & reduce

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A