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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

regex.test()

59.1M/s

string.toLowerCase().includes()

39.8M/s

View exact numbers

Test name	Executions per second
✓ regex.test()	59,089,840 Ops/sec
string.toLowerCase().includes()	39,833,884 Ops/sec

Script Preparation code:

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

Tests: