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/118.0.0.0 Safari/537.36 Edg/118.0.2088.61

Browser: Chrome 118

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
lowercase + includes	4821239.5 Ops/sec
RegExp + i	1638552.2 Ops/sec

Script Preparation code:

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

Tests: