Run results for: Single vs multiple regex replace calls

Run details:

User agent: Mozilla/5.0 (Android 11; Mobile; rv:103.0) Gecko/103.0 Firefox/103.0

Browser: Firefox Mobile 103

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Multiple, regex	3701723.5 Ops/sec
Single, regex	2764366.5 Ops/sec
Single, group regex	2766130.2 Ops/sec
No regex	7257377.5 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','')

Run results for: Single vs multiple regex replace calls

Multiple, regex

Single, regex

Single, group regex

No regex