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<!DOCTYPE html> <html> <body> <h1>The Element Object</h1> <h2>The insertAdjacentElement() Method</h2> <button onclick="myFunction()">Move</button> <p>Click "Move" to insert the red span inside the header.</p> <span id="mySpan" style="color:red">My span</span> <h2 id="myH2">My Header</h2> <script> function myFunction() { const span = document.getElementById("mySpan"); const h2 = document.getElementById("myH2"); h2.insertAdjacentElement("afterbegin", span); } </script> </body> </html>