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/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

No regex

1.9M/s

Single, group regex

1.9M/s

Multiple, regex

1.9M/s

Single, regex

976K/s

View exact numbers

Test name	Executions per second
✓ No regex	1,915,391 Ops/sec
Single, group regex	1,911,410 Ops/sec
Multiple, regex	1,881,891 Ops/sec
Single, regex	975,660 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','')