Run results for: includes + toLocaleLowerCase vs RegExp + i

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser: Chrome 114

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

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

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

Tests:

lowercase + includes
str.toLowerCase().includes(needleLower)
str.toLowerCase().includes(needleLower)
RegExp + i
new RegExp(needle, 'i').test(str);
new RegExp(needle, 'i').test(str);
localelowercase + includes
str.toLocaleLowerCase().includes(needleLower)
str.toLocaleLowerCase().includes(needleLower)