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/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

No regex

10.6M/s

Single, group regex

10.3M/s

Single, regex

10.3M/s

Multiple, regex

8.3M/s

View exact numbers

Test name	Executions per second
✓ No regex	10,595,482 Ops/sec
Single, group regex	10,259,072 Ops/sec
Single, regex	10,252,976 Ops/sec
Multiple, regex	8,312,668 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','')