Which of the following is not a valid attribute for the <link> element in HTML5?

A computer programming book has to go online. Which tag is ideal for displaying the program snippets?

Which is valid way to associate custom data with an HTML5 element?

Which

You want to create a link for your website allowing users to email the webmaster. How will you implement this if the webmaster's email address is webmaster@xcompany.com?

What does the icon attribute of the HTML5 command tag define? Click Me!

What tag isolates a part of text that might be formatted in a different direction from other text outside it

On which object will the browser fire history events (such as when the back button is pressed)?

Which is true about the placeholder attribute of <input> elements?

After the browser fires an `updateready` event, which of the following is true?

True or False: You can place a footer tag inside of a footer tag.