Introduction:In this article I will explain how to confirm before closing or leave page (go back or forward). While working in asp.net we face this issue to check or confirm whether user wants to leave page or not. It can be done by using Javascript or jQuery Script.
Following
Javascript code is used to confirm whether user wants to leave page or not:
<script type="text/javascript">
var
hook = true;
window.onbeforeunload = function () {
if
(hook) {
return
"Did you save your stuff?"
}
}
function
unhook() {
hook = false;
}
</script>
We
confirm on
window.onbeforeunload event.
Source Code:
Full Code for Sample webpage:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script
type="text/javascript">
var
hook = true;
window.onbeforeunload = function () {
if
(hook) {
return
"Did you save your stuff?"
}
}
function
unhook() {
hook = false;
}
</script>
</head>
<body>
<form
id="form1"
runat="server">
<center>
<div>
<strong>Alert
before close?
</strong>
</div></center>
</form>
</body>
</html>
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