javascript - 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:

toUpperCase();

And had no luck, as it uppercases all letters.

Answer 1

Use the .replace^[MDN] function to replace the lowercase letters that begin a word with the capital letter.

var str = "hello world";
str = str.toLowerCase().replace(/[a-z]/g, function(letter) {
    return letter.toUpperCase();
});
alert(str); //Displays "Hello World"