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<!DOCTYPE html> <html> <body> <p>This example contains a form with a submit button that submits the form to a new window:</p> <form action="demo_form.asp" method="get"> 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" value="Submit" formtarget="_blank"> </form> <p>Click on the "Try it" button to change the value of the formtarget attribute of the submit button above.</p> <p><b>Note:</b> Click on the submit button before and after you have clicked on the "Try it" button.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("mySubmit").formTarget = "_self"; document.getElementById("demo").innerHTML = "The value of the formtarget attribute was changed from '_blank' to '_self'."; } </script> </body> </html>