Popovers and Dialogs

A popover is a note that pops up over the page from a button and closes with Esc or a click outside, and a modal dialog is a box that blocks the page until the visitor closes it, both with no JavaScript.

Updated

Codey's cheat sheet for Popovers and Dialogs: A popover is a note that pops up over the page from a button and closes with Esc or a click outside, and a modal dialog is a box that blocks the page until the visitor closes it, both with no JavaScript.
Category
HTML
Level
Journeyman
Tags
<dialog>, html, Light dismiss, Modal dialog, Popover, popover attribute, Popover target