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<!DOCTYPE html>
<html>
<body>
<p>Click the button to create an ASIDE element containing a H4 and P element.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
  var x = document.createElement("ASIDE");
  x.setAttribute("id", "myAside");
  document.body.appendChild(x);
  var heading = document.createElement("H4");
  var txt1 = document.createTextNode("Epcot Center");
  heading.appendChild(txt1);
  document.getElementById("myAside").appendChild(heading);
  var para = document.createElement("P");
  var txt2 = document.createTextNode("The Epcot Center is a theme park in Disney World.");
  para.appendChild(txt2);
  document.getElementById("myAside").appendChild(para);
}
</script>
</body>
</html>