Run results for: Single vs multiple regex replace calls

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

No regex

15.2M/s

Single, regex

14.6M/s

Single, group regex

14.3M/s

Multiple, regex

11.7M/s

View exact numbers

Test name	Executions per second
✓ No regex	15,239,982 Ops/sec
Single, regex	14,560,328 Ops/sec
Single, group regex	14,292,215 Ops/sec
Multiple, regex	11,739,969 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','')