Run results for: Native replaceAll vs regex replace vs replace with String.raw

Run details:

User agent: Mozilla/5.0 (Android 13; Mobile; rv:121.0) Gecko/121.0 Firefox/121.0

Browser: Firefox Mobile 121

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

replace regex

3.5M/s

replace regex with String.raw

1.8M/s

replace All

713K/s

View exact numbers

Test name	Executions per second
✓ replace regex	3,480,949 Ops/sec
replace regex with String.raw	1,764,560 Ops/sec
replace All	713,148 Ops/sec

Tests:

replace regex
"Hello, [%user_name%]! What's up, [%user_name%]?".replace(/\[\%user_name\%\]/g, 'Jane');
replace All
"Hello, [%user_name%]! What's up, [%user_name%]?".replaceAll(`[%user_name%]`, 'Jane');
replace regex with String.raw
"Hello, [%user_name%]! What's up, [%user_name%]?".replace(new RegExp(String.raw`\[\%user_name\%\]`, "g"), 'Jane');