If you were using Internet Explorer 6 or 7 on a Windows machine or Opera 9, this demo would actually work!
Intro
Validation
Date and time types
Range control
Repetition
Calculated fields
Datalist
Autofocus
Prefilling forms
Roundtripping data
Input mode

Autofocus

Autofocus is a new attribute that declares that a field should be focused when a page is loaded.

<- this field has autofocus

(Reload the page to see the effect.)

The HTML for the field looks like this:

<input type="text" name="b" autofocus>