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<!DOCTYPE html> <html> <body> <iframe src="../default.html" style="height:380px;width:520px;"></iframe> <p>Click the "Try it" button to adopt and display the value of the first H1 element in the iframe (another document).</p> <p><strong>Note:</strong> Internet explorer 8 and earlier does not support the adoptNode() method.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { var frame = document.getElementsByTagName("IFRAME")[0] var h = frame.contentWindow.document.getElementsByTagName("H1")[0]; var x = document.adoptNode(h); document.body.appendChild(x); } </script> </body> </html>