Uppercase first letter of variable

Question

I have searched over the web can can\'t find anything to help me. I want to make the first letter of each word upper case within a variable.

So far i have tried:

Answer 1

Without JQuery

String.prototype.ucwords = function() {
    str = this.trim();
    return str.replace(/(^([a-zA-Z\p{M}]))|([ -][a-zA-Z\p{M}])/g, function(s){
        return s.toUpperCase();
    });
};

console.log('hello world'.ucwords()); // Display Hello World