How do I make the first letter of a string uppercase in JavaScript?

Question

How do I make the first letter of a string uppercase, but not change the case of any of the other letters?

For example:

• \"this is a test\"

Answer 1

Here's a more object-oriented approach:

String.prototype.capitalize = function() {
    return this.charAt(0).toUpperCase() + this.slice(1);
}

You'd call the function, like this:

"hello world".capitalize();

With the expected output being:

"Hello world"