提交按钮不在Chrome中工作但在Firefox中工作

Question

Hi the logout button is not working in chrome. It is working fine in Firefox. However if I press F12 and keep the developer console open then the button works. The button also works when I press enter. I'm confused. Here is my code.

HTML Code:

<form name="logoutform" method="post" onsubmit="logoutConfirmation()" action="" >
        <input type="submit" value="Logout" id="logoutbutton" name="userlogout" ><br>
    </form>

JS Code:

function logoutConfirmation()
 {
alert("Thank you. Have a nice day!");
 }

PHP Code:

if(isset($_POST['userlogout']))
    {
        setcookie('user_name', '');
        setcookie('user_id', '');
        session_destroy();
        header("Location: index.php");
    }

Answer 1

Define the action php file in your form like;

<form name="logoutform" method="post" onsubmit="logoutConfirmation()" action="yourfile.php" >
        <input type="submit" value="Logout" id="logoutbutton" name="userlogout" ><br>
</form>