Which of the next video formats is not entirely available for Firefox Browsers?

What is the proper syntax for specifying a cache manifest?

What are the valid properties of the options object that may be passed to navigator.geolocation.getCurrentPosition?

A wrapper around the html5lib library for sanitizing HTML is called a:

Controls attribute in <video> element doesn't include:

After checking all files in the cache manifest for updates, and finding several files that need to be updated, which event will the browser fire?

Consider the following JavaScript code: var c=document.getElementById('myCanvas'); var ctx=c.getContext('2d'); var img=document.getElementById('img'); Which method will correctly draw an image in the x=10, y=10 position?

Which HTML5 doctype declarations are correct?

What is the internal/wire format of input type='date' in HTML5?

The following are valid use cases of client file/directory access in HTML5, except:

Which code is used to prevent Webkit spin buttons from appearing on web pages?