JavaScript toUpperCase, metodo toUpperCase maiuscolo
How to Convert String to Upper and Lowercase in JavaScript
How to uppercase a string in JavaScript?
JavaScript toLowerCase() – How to Convert a String to Lowercase and Uppercase in JS
JavaScript String toUpperCase() Method
Which built-in method returns the calling string value converted to upper case in JavaScript ? - GeeksforGeeks
Codewars 8 kyu Is the String Uppercase? Javascript - YouTube
JavaScript function: Converts the first letter of each word of a string in upper case - w3resource
How do I make the first letter of a string uppercase in JavaScript? - Stack Overflow
JavaScript function: Converts the first letter of each word of a string in upper case - w3resource
javascript - How can I convert each alternate character of a string lowercase to uppercase and string uppercase to lowercase in Jquery? - Stack Overflow
JavaScript array: Swap the case of each character of a string, upper case to lower and vice versa - w3resource