Run results for: includes + toLowerCase vs RegExp + i

Run details:

User agent: Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Chrome OS 14541.0.0

Device Platform: Desktop

Date tested: 2 years ago

lowercase + includes

2.1M/s

RegExp + i

811K/s

View exact numbers

Test name	Executions per second
✓ lowercase + includes	2,106,401 Ops/sec
RegExp + i	810,585 Ops/sec

Script Preparation code:

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

Tests: