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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

replace regex

8.9M/s

replace regex with String.raw

6.2M/s

replace All

4.1M/s

View exact numbers

Test name	Executions per second
✓ replace regex	8,880,389 Ops/sec
replace regex with String.raw	6,193,354 Ops/sec
replace All	4,117,877 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');