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onbeforeunload dilemma: iframe breaking vs. annoying message on refresh/back buttons click

Answer 1

A:

See my comment here on how window.onbeforeunload works: Hopefully this will help you determine whether you want to take the window.onbeforeunload approach or write a better script on it.

The Elite Gentleman 2010-03-10 08:29:16

Answer 2

A:

Take as example this site. Try to refresh the page after u typed some text answering to a post. You will see that the page it will ask you to continue ur work or exit. Make another test without answering to a post, just refresh, you will see that the confirm will not showed, because the site is making a test if the "answer" is empty or not. Example:

<html>
<head>
<script>
function closeIt()
{
  var mytext = document.getElementById("mytext").value;
  if(mytext != "")
     return "Any string value here forces a dialog box to \n" + 
         "appear before closing the window.";
}
window.onbeforeunload = closeIt;
</script>
</head>
<body>
  <textarea id="mytext"></textarea>
</body>
</html>

So it's up to u to decide when the box will show or not. Visit also Microsoft Msdn to understand when and how onbeforeunload works

Adrian 2010-05-26 10:19:51

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onbeforeunload dilemma: iframe breaking vs. annoying message on refresh/back buttons click

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