Run results for: Single vs multiple regex replace calls

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Single, group regex

5.3M/s

No regex

5.2M/s

Single, regex

5.1M/s

Multiple, regex

4.4M/s

View exact numbers

Test name	Executions per second
✓ Single, group regex	5,274,418 Ops/sec
No regex	5,181,184 Ops/sec
Single, regex	5,135,942 Ops/sec
Multiple, regex	4,385,609 Ops/sec

Script Preparation code:

var str = "Et inventore ut est. Illum dolorem similique odit. Velit necessitatibus unde nostrum sequi ut pariatur suscipit sit magnam. Cum esse sed quod aut id. Recusandae vel commodi."

Tests:

Multiple, regex
str = str.replace(/a/g, '').replace(/e/g,'')
Single, regex
str = str.replace(/a|e/g, '')
Single, group regex
str = str.replace(/[ae]+/g, '')
No regex
str = str.replace('a', '').replace('e','')