![Transform all text in a string to lowercase](https://javascriptsource.com/wp-content/uploads/2022/01/Transform-all-text-in-a-string-to-lowercase-702x526.jpg)
Use String.toLowerCase()
to transform all text in a string to lowercase.
var text = 'This sentence has some MIXED CASE LeTTeRs in it.';
// returns "this sentence has some mixed case letters in it."
var lower = text.toLowerCase();
Source
https://vanillajstoolkit.com/reference/strings/string-tolowercase/