Run results for: Single vs multiple regex replace calls new new

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Multiple, regex

12.3M/s

Single, regex

7.9M/s

View exact numbers

Test name	Executions per second
✓ Multiple, regex	12,323,378 Ops/sec
Single, regex	7,884,063 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, 'A').replace(/e/g,'E')
Single, regex
str = str.replace(/a|e/g, match => match === 'a' ? 'A' : 'B')