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Question

Answer 1

+3 A:

You have to write the action in

which fires prior to a page being unloaded.

<HTML>
<head>
<script>
function closeIt()
{
  return "Any string value here forces a dialog box to \n" + 
         "appear before closing the window.";
}
window.onbeforeunload = closeIt;
</script>
</head>
<body>
  <a href="http://www.microsoft.com"&gt;Click here to navigate to 
      www.microsoft.com</a>
</body>
</html>

rahul 2009-10-12 09:10:34

I'm aware of the onbeforeunload event. However you're going to have to hack yourself into the form submit or button click code to make the exception for that specific button. I was wondering if there is a better way to do that with ASP.net. Thnx.

Zyphrax 2009-10-12 09:19:56

Answer 2

A:

You should pay your attention on "onbeforunload" event As for the Save button you just can make some scripting logic, for example unsubscribe on this event or else.

Restuta 2009-10-12 09:12:10

Same comment as the answer above.

Zyphrax 2009-10-12 09:28:14

Do not agree with "you're going to have to hack yourself" it is very easy to write such logic. It is no better way and espesially in ASP.NET that is also weak before client logic.

Restuta 2009-10-12 09:39:55

Answer 3

A:

You can try this:

<button onclick="javascript:doSend()">send</button>
<button onclick="window.xbuttons +='save ';">save</button>
<button onclick="window.xbuttons +='edit';">edit</button>
<script>
   window.xbuttons = '';
   window.onbeforeunload = function(){
      if(!window.xbuttons.match(/save|edit/))
         return "Do you want to leave this page?";
   }
</script>

Here are the things you should note about onbeforeunload:

onbeforeunload event will fire on every a (anchor elements) with href attribute
onbeforeunload event will fire when the document location is change via javascript or by changing the url on the address bar
onbeforeunload event will fire on any event that uses javascript: pseudo-protocol

jerjer 2009-10-12 09:40:42

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answers:

Ask for confirmation on page unload

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