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<!DOCTYPE html> <html> <body> <form target="_blank"> First name: <input type="text" name="fname" value="Donald"><br> Last name: <input type="text" name="lname" value="Duck"><br> <input type="submit" id="mySubmit" formaction="demo_form_method.asp" formmethod="get" value="Submit"> </form> <p>Click the "Try it" button to change the value of the formmethod and formaction attributes of the submit button in the form above.</p> <p><b>Note:</b> Click on the "Submit" button before and after you have clicked on the "Try it" button, to see the effect!</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("mySubmit").formMethod = "post"; document.getElementById("mySubmit").formAction = "demo_form_method_post.asp"; document.getElementById("demo").innerHTML = "The value of formaction and formmethod was changed."; } </script> </body> </html>