<html>
<body>
<button onclick="myFunction()">Try it</button>
<p id="demo">Click the button above to get and display the value of the first H1 element in the iframe:</p>
<script>
function myFunction()
{
var frame=document.getElementsByTagName("iframe")[0]
var h=frame.contentWindow.document.getElementsByTagName("h1")[0];
var x=document.importNode(h,true);
document.getElementById("demo").appendChild(x);
};
</script>
<iframe src="/" style="height:280px;width:420px;"></iframe>
<p><strong>Note:</strong> Internet explorer 8 and earlier does not support the importNode method.</p>
</body>
</html>