I want to prevent the page loading when "Editing" on m page occures.
so i got this code
window.onbeforeunload = function() {
return "Are you sure you want to navigate away?";
}
Now i need to unbind this from the page.
is there any methods available ?
Thank you.
You set the handler to null:
window.onbeforeunload = null;
To unbind the event, set it to null:
window.onbeforeunload = null;
It may however be better for program flow to put a condition inside your onbeforeunload handler, so that you have a single function running on page unload:
window.onbeforeunload = function() {
if (myVar == "Editing")
return "Are you sure you want to navigate away?";
}
You should use some flag to check if page is editing values or just navigating to other page
you can follow this thread too
Javascript, controlling an onbeforeunload tag
Related
I'm trying to prevent any additional dialogs without needing the additional dialog box to be checked. I'm implementing an autosave feature that is called right before the user closes or refreshes the page, so the "changes you made may not be saved" pop-up is unnecessary. I looked at beforeunload and had no luck.
window.onbeforeunload = null;
$(window).on('unload', function (e) {
$page.model.save(true, function (success) {});
});
Maybe try, instead of just calling
window.onbeforeunload = null;
Instead use:
$(window).on('beforeunload', function () {
window.onbeforeunload = null;
});
I'm trying to implement a warning for the users in case they are leaving the form without saving.
The warning dialog works as expected but with the only exception that when the user chooses to 'Stay on Page', the selected side menu entry changed to the one the user clicked on (form is the same).
How can I make sure that the same menu item is still selected once the user chooses to 'Stay on Page'?
var warnMessage = "Unsaved changes. Do you really want to leave the page?";
$(document).ready(function () {
$('a.k-link').on('click', function () {
window.onbeforeunload = function () {
if (isDirty) return warnMessage;
}
});
});
You might find it easier (and possibly more consistent across browsers) to use a confirm prompt (remember, it's a blocking dialog).
<script>
var warnMessage = "Unsaved changes. Do you really want to leave the page?";
$('a.k-link').on('click', function (e) {
if (isDirty && !confirm(warnMessage)) {
e.preventDefault();
}
});
</script>
There are at least two reasons to avoid onbeforeunload:
The spec doesn't require a browser to display the message you
provide, and not all browsers do, and
the correct event is actually beforeunload
You can and should handle this event through window.addEventListener() and the beforeunload event. More documentation is available there. (MDN)
I'm just guessing, since the Kendo UI scripts aren't exactly fun to read through, but the 'selected' class is getting applied because a navigation event was started, even though you cancel it; the Kendo script is probably just listening for a successful click. onbeforeunload and beforeunload both happen after the click event has resolved (AFAIK, anyway).
Following worked for me (adding e.stopPropagation):
$('a.k-link').on('click', function (e) {
if (isDirty && !confirm(warnMessage)) {
e.preventDefault();
e.stopPropagation();
} });
or by returning false:
$('a.k-link').on('click', function (e) {
if (isDirty && !confirm(warnMessage)) {
return false;
} });
I am popping up a dialog box when someone tries to navigate away from a particular page without having saved their work. I use Javascript's onbeforeunload event, works great.
Now I want to run some Javascript code when the user clicks "Cancel" on the dialog that comes up (saying they don't want to navigate away from the page).
Is this possible? I'm using jQuery as well, so is there maybe an event like beforeunloadcancel I can bind to?
UPDATE: The idea is to actually save and direct users to a different webpage if they chose cancel
You can do it like this:
$(function() {
$(window).bind('beforeunload', function() {
setTimeout(function() {
setTimeout(function() {
$(document.body).css('background-color', 'red');
}, 1000);
},1);
return 'are you sure';
});
});
The code within the first setTimeout method has a delay of 1ms. This is just to add the function into the UI queue. Since setTimeout runs asynchronously the Javascript interpreter will continue by directly calling the return statement, which in turn triggers the browsers modal dialog. This will block the UI queue and the code from the first setTimeout is not executed, until the modal is closed. If the user pressed cancel, it will trigger another setTimeout which fires in about one second. If the user confirmed with ok, the user will redirect and the second setTimeout is never fired.
example: http://www.jsfiddle.net/NdyGJ/2/
I know this question is old now, but in case anyone is still having issues with this, I have found a solution that seems to work for me,
Basically the unload event is fired after the beforeunload event. We can use this to cancel a timeout created in the beforeunload event, modifying jAndy's answer:
$(function() {
var beforeUnloadTimeout = 0 ;
$(window).bind('beforeunload', function() {
console.log('beforeunload');
beforeUnloadTimeout = setTimeout(function() {
console.log('settimeout function');
$(document.body).css('background-color', 'red');
},500);
return 'are you sure';
});
$(window).bind('unload', function() {
console.log('unload');
if(typeof beforeUnloadTimeout !=='undefined' && beforeUnloadTimeout != 0)
clearTimeout(beforeUnloadTimeout);
});
});
EDIT: jsfiddle here
Not possible. Maybe someone will prove me wrong... What code do you want to run? Do you want to auto-save when they click cancel? That sounds counter-intuitive. If you don't already auto-save, I think it makes little sense to auto-save when they hit "Cancel". Maybe you could highlight the save button in your onbeforeunload handler so the user sees what they need to do before navigating away.
I didn't think it was possible, but just tried this idea and it works (although it is some what of a hack and may not work the same in all browsers):
window.onbeforeunload = function () {
$('body').mousemove(checkunload);
return "Sure thing";
};
function checkunload() {
$('body').unbind("mousemove");
//ADD CODE TO RUN IF CANCEL WAS CLICKED
}
Another variation
The first setTimeout waits for the user to respond to the browser's Leave/Cancel popup. The second setTimeout waits 1 second, and then CancelSelected is only called if the user cancels. Otherwise the page is unloaded and the setTimeout is lost.
window.onbeforeunload = function(e) {
e.returnValue = "message to user";
setTimeout(function () { setTimeout(CancelSelected, 1000); }, 100);
}
function CancelSelected() {
alert("User selected stay/cancel");
}
window.onbeforeunload = function() {
if (confirm('Do you want to navigate away from this page?')) {
alert('Saving work...(OK clicked)')
} else {
alert('Saving work...(canceled clicked)')
return false
}
}
with this code also if user clicks on 'Cancel' in IE8 the default navigation dialog will appear.
I've got a form which is being submitted via PHP with 3 submit actions:
Save and Continue
Save and Exit
Exit without Saving
I'd like to trigger an "OnBeforeUnload" alert to display if the user DOES NOT click on any of the form actions to advise them that they're leaving the page, and their changes may not be saved.
I've tried the following code but it seems as though the unbeforeunload is being triggered before my click event. Any suggestions on how best to achieve this?
$buttonpressed = false;
$j(".Actions input").click(function(){
$buttonpressed = true;
});
if(!$buttonpressed){
window.onbeforeunload = function(){
return "Your changes may not be saved.";
}
}
You need to do the check inside the handler, like this:
window.onbeforeunload = function(){
if(!$buttonpressed){
return "Your changes may not be saved.";
}
}
Currently it's binding window.onbeforeunload when your code is run because $buttonpressed is false when it runs...it doesn't matter if it changes later since you already bound the handler. An alternative is to make it a bit simpler, like this:
window.onbeforeunload = function(){
return "Your changes may not be saved.";
}
$j(".Actions input").click(function(){
window.onbeforeunload = null;
});
This just removes the handler on click instead. A more appropriate event to handle other submit cases would be to attach to the submit event, like this:
$j(".myForm").submit(function(){
window.onbeforeunload = null;
});
I have a page with a form that is submittes via ajaxSubmit() (so, without changing the page).
My goal is that, when the user try to change page (or even to close the browser), i ask him if really want to exit the page without sending the form (exactly as gmail does).
Gmail for example do this with a window.confirm-like popup, but if it is possible, i'll like to handle it with custom messages and options.
jQuery have the unload event:
$(window).unload( function () { alert("Bye now!"); } );
but it permits me just to do something before exit the page; i need to 'block' the page exit, if the user click the relative button.
So, how to handle (and cancel) the page-exit event?
try the following. Demo here
<script type="text/javascript">
function unloadPage(){
return "dont leave me this way";
}
window.onbeforeunload = unloadPage;
</script>
It's possible bind the "onbeforeunload" event with jQuery:
$(window).bind('beforeunload', function(e) {
return "ATTENZIONE!!";
});
It works!!