How to add URL text box in HTML5 Form

A URL is a website address, usually with http:// at the front of www. HTML 5 introduced a text box for a URL. Here is the code to try. Notice the type is now URL:

<FORM>

<INPUT TYPE="URL" PLACEHOLDER="Enter a website">

<P>
<INPUT TYPE="Submit" VALUE="Submit">

</FORM>

At the time of writing, only Firefox and Chrome support the URL text box, popping up a message when you don't type the full address (complete with http:// at the front).