Answers for "how to identify uppercase in strings javascript"

uppercase string in js

var str = "Hello World!";
var res = str.toUpperCase();  //HELLO WORLD!

how to check if the first letter of a string is capitalized or uppercase in js

/**** Check if First Letter Is Upper Case in JavaScript***/
function startsWithCapital(word){
    return word.charAt(0) === word.charAt(0).toUpperCase()
}

console.log(startsWithCapital("Hello")) // true
console.log(startsWithCapital("hello")) // false