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JavaScript has a handy, and fun, little thing called document.title, all it does is change the title, but it’s handy in certain situations. One of these situations is when dealing with AJAX, I was fetching a post, but the title remained the same. I quickly learned about document.title, and all my troubles were gone. All it takes is:
document.title = document.titleform.newtitle.value;
That would work if I had a form named titleform with a field called newtitle. To best implement this, it should be stored in a function, let’s say change():

function change(title)
{
document.title = title;
}

This code will change the title to whatever we want. *evil* I want it to update every keystroke, so we’re going to use the method onkeyup:

<form>
New Title: <input type=‘text’ onkeyup=‘change(this.value);’ />
</form>

Yea, I know, it’s really that simple. This is a special keyword, it means what you think, this! So it means this value, which is our new title. Heh, now, go off and entertain yourself with this.