<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Removing span element during drag and drop of selection</title>
<style type="text/css">
div
  {min-height:100px;
  width:100px;
  padding:20px;
  color:white;
  background-color:navy;}
</style>
</head>
<body onload="window.getSelection().selectAllChildren(document.querySelector('span'))">
<p><span ondragstart="document.querySelector('p').removeChild(document.querySelector('span'))">Drag me</span></p>
<p>Drag selection above to the navy box below and drop it. You should see word PASS once you drop it in the box.</p>
<div ondragover="return false" ondrop="document.querySelector('div').appendChild(document.createTextNode((event.dataTransfer.getData('text/plain') == 'Drag me')?'PASS':'FAIL'))"/>
</body>
</html>