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<!DOCTYPE html> <html> <body> <form id="myForm" action="demo_post_enctype.asp" method="post"> First name: <input type="text" name="fname" value="Donald"><br> Last name: <input type="text" name="lname" value="Duck"><br> <input type="submit" value="Submit"> </form> <p>Click the "Try it" button to change the value of the enctype attribute, for how the form data should be encoded.</p> <p><b>Note:</b> Click "Submit" before and after you have clicked the on "Try it" button.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("myForm").enctype = "multipart/form-data"; document.getElementById("demo").innerHTML = "Form data will now be encoded as multipart/form-data."; } </script> </body> </html>