Run results for: Case insensitive search: regex.test() vs string.toLowerCase().includes()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

string.toLowerCase().includes()

1195.2M/s

regex.test()

24.3M/s

View exact numbers

Test name	Executions per second
✓ string.toLowerCase().includes()	1,195,157,120 Ops/sec
regex.test()	24,316,350 Ops/sec

Script Preparation code:

var testStr = 'QWERtyuioIUYTRE';
var input = 'uioiu';
var inputRegex = new RegExp(input, 'i');

Tests: