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/112.0.0.0 Safari/537.36 OPR/98.0.0.0

Browser: Opera 98

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
lowercase + includes	4389607.0 Ops/sec
RegExp + i	1975074.8 Ops/sec

Script Preparation code:

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

Tests: