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<!DOCTYPE html> <html> <body> <form action="form_action.asp"> First name: <input type="text" name="fname" value="Donald"><br> Last name: <input type="text" name="lname" value="Duck"><br> City: <input type="text" name="fname" value="Duckburg"><br> <input type="submit" value="Submit"> </form> <p>Click the "Try it" button to display the value of each element in the form.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.forms[0]; var txt = ""; var i; for (i = 0; i < x.length; i++) { txt = txt + x.elements[i].value + "<br>"; } document.getElementById("demo").innerHTML = txt; } </script> </body> </html>