Run results for: includes + toLowerCase vs RegExp + i

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

lowercase + includes

169.3M/s

RegExp + i

12.7M/s

View exact numbers

Test name	Executions per second
✓ lowercase + includes	169,301,744 Ops/sec
RegExp + i	12,669,223 Ops/sec

Script Preparation code:

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

Tests: