Run results for: includes + toLowerCase vs RegExp + i

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

lowercase + includes

2947.4M/s

RegExp + i

20.2M/s

View exact numbers

Test name	Executions per second
✓ lowercase + includes	2,947,403,008 Ops/sec
RegExp + i	20,246,960 Ops/sec

Script Preparation code:

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

Tests: