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Credit: Imagenation
Description
Controling window closings - somewhat.
Background
It is sometimes very important to control the opening and closing
of windows especially when users have filled in forms - because even if the
user returns immediately to the page, all the filled in data is lost unless
your program provides recovery.
Key features
and CSS elements
By using
the onUnload event in the <body> tag and a small closeout function developers
can prevent users from inadvertently following a link that will cause havoc.
However, if the user closes down the browser using the exit or cancel icon
- these situations are not controllable by these methods.
Again the code is fairly simple:
function
closeOut(){
if (confirm("Do you really want to close this window")){
return true; }
location.href = document.URL;;
return true;
}
First we put
in a confirm dialog which warns the user and then awaits a response. If the
user clicks Ok the window is unloaded; however if the user clicks cancel then
the location.href - where to go next - is set to this page again through the
document.URL effectively canceling the change. WARNING - even this may not
preserve the forms variables in some browsers.
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