Run results for: Comparing performance of: split + join vs replace vs replaceAll

Run details:

User agent: Mozilla/5.0 (Linux; Android 14; T434D Build/UP1A.231005.007) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.7151.115 Mobile Safari/537.36

Browser: Chrome Mobile 137

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

replace

1.0M/s

replace all

655K/s

split + join

476K/s

View exact numbers

Test name	Executions per second
✓ replace	1,009,742 Ops/sec
replace all	654,901 Ops/sec
split + join	475,929 Ops/sec

Script Preparation code:

var example = 'Agreement Change Id'

Tests:

split + join
var result = example.split(/\s/g).join('_');
replace
var result = example.replace(/\s/g, '_')
replace all
var result = example.replaceAll(/\s/g, '_')