Disable browser's back button

Question

How to disable browser\'s BACK Button (across browsers)?

Answer 1

Globally, disabling the back button is indeed bad practice. But, in certain situations, the back button functionality doesn't make sense.

Here's one way to prevent unwanted navigation between pages:

Top page (file top.php):

secondary page";
?>

Secondary page (file secondary.php):

top";
    }
?>

The effect is to allow navigating from the top page forward to the secondary page and back (e.g. Cancel) using your own links. But, after returning to the top page the browser back button is prevented from navigating to the secondary page.