<!DOCTYPE html>
<html>
<body>
<p><del id="myDel" datetime="2011-11-15T22:55:03Z">This text has been deleted</del></p>
<p>Click the button to change the value of the datetime attribute of the deleted text.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("myDel").dateTime = "2013-11-15T21:40:07Z";
document.getElementById("demo").innerHTML = "The value of the datetime attribute was changed to '2013-11-15T21:40:07Z'.";
}
</script>
</body>
</html>