Run results for: includes + toLowerCase vs RegExp + i

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:134.0) Gecko/20100101 Firefox/134.0

Browser: Firefox 134

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

lowercase + includes

1962.3M/s

RegExp + i

20.7M/s

View exact numbers

Test name	Executions per second
✓ lowercase + includes	1,962,320,256 Ops/sec
RegExp + i	20,704,132 Ops/sec

Script Preparation code:

var str = "This is a simple test!";
var needle = "sImPle";

Tests: