Run results for: includes + toLowerCase vs RegExp + i

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Linux

Device Platform: Desktop

Date tested: yesterday

Test name	Executions per second
lowercase + includes	123673352.0 Ops/sec
RegExp + i	10713240.0 Ops/sec

Script Preparation code:

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

Tests: