<?xml version="1.0" encoding="utf-8"?> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Changing iframe content during drag and drop of link</title> <style type="text/css"> iframe {height:100px; width:300px; border:solid medium navy;} </style> </head> <body ondragenter="event.preventDefault();document.querySelector('iframe').src = 'data:text/plain,Drop%20link%20outside%20this%20frame'" ondragover="return false" ondrop="document.querySelector('p').firstChild.nodeValue = (event.dataTransfer.getData('text/uri-list').replace(/\r\n$/,'') == 'data:text/plain,1')?'PASS':'FAIL'"> <iframe src="helper-drag-me-link.xhtml">XHTML document</iframe> <p>Drag link above out of frame and drop it somewhere on the page. You should see word PASS once you drop it.</p> </body> </html>