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<!DOCTYPE html> <html> <body> <p>Click the button to create a FORM and an INPUT element.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { var x = document.createElement("FORM"); x.setAttribute("id", "myForm"); document.body.appendChild(x); var y = document.createElement("INPUT"); y.setAttribute("type", "text"); y.setAttribute("value", "Donald"); document.getElementById("myForm").appendChild(y); } </script> </body> </html>