When using window.onbeforeunload (or $(window).on("beforeunload")), is it possible to display a custom message in that popup?
Maybe a small trick that works on major browsers?
By looking at existing answers I have the feeling this was possible in the past using things like confirm or alert or event.returnValue, but now it seems they are not working anymore.
So, how to display a custom message in the beforeunload popup? Is that even/still possible?
tl;dr - You can't set custom message anymore in most modern browsers
A quick note (since this is an old answer) - these days all major browsers don't support custom message in the beforeunload popup. There is no new way to do this. In case you still do need to support old browsers - you can find the information below.
In order to set a confirmation message before the user is closing the window you can use
jQuery
$(window).bind("beforeunload",function(event) {
return "You have some unsaved changes";
});
Javascript
window.onbeforeunload = function() {
return "Leaving this page will reset the wizard";
};
It's important to notice that you can't put confirm/alert inside beforeunload
A few more notes:
NOT all browsers support this (more info in the Browser compatibility section on MDN)
2. In Firefox you MUST do some real interaction with the page in order for this message to appear to the user.
3. Each browser can add his own text to your message.
Here are the results using the browsers I have access to:
Chrome:
Firefox:
Safari:
IE:
Just to make sure - you need to have jquery included
More information regarding the browsers support and the removal of the custom message:
Chrome removed support for custom message in ver 51
Opera removed support for custom message in ver 38
Firefox removed support for custom message in ver 44.0 (still looking for source for this information)
Safari removed support for custom message in ver 9.1
When using window.onbeforeunload (or $(window).on("beforeonload")), is it possible to display a custom message in that popup?
Not anymore. All major browsers have started ignoring the actual message and just showing their own.
By looking at existing answers I have the feeling this was possible in the past using things like confirm or alert or event.returnValue, but now it seems they are not working anymore.
Correct. A long time ago, you could use confirm or alert, more recently you could return a string from an onbeforeunload handler and that string would be displayed. Now, the content of the string is ignored and it's treated as a flag.
When using jQuery's on, you do indeed have to use returnValue on the original event:
$(window).on("beforeunload", function(e) {
// Your message won't get displayed by modern browsers; the browser's built-in
// one will be instead. But for older browsers, best to include an actual
// message instead of just "x" or similar.
return e.originalEvent.returnValue = "Your message here";
});
or the old-fasioned way:
window.onbeforeunload = function() {
return "Your message here"; // Probably won't be shown, see note above
};
That's all you can do.
As of 2021, for security reasons, it is no longer possible to display a custom message in the beforeunload popup, at least in the main browsers (Chrome, Firefox, Safari, Edge, Opera).
This is no longer possible since:
Chrome: version 51
Firefox: version 44
Safari: version 9
Edge: it has never been possible
Opera: version 38
For details see:
https://www.chromestatus.com/feature/5349061406228480
https://caniuse.com/mdn-api_windoweventhandlers_onbeforeunload_custom_text_support
An alternative approach in order to get a similar result is to catch click events related to links (that would take you away from the current page) and ask for confirmation there. It might be adjusted to include forms submission or perhaps redirections through scripts (that would require to apply a specific class and information in the elements that trigger the redirect).
Here is a working code snippet (based on jQuery) that shows you how you can do it:
Edit: the code snippet here in SO does not work on all browsers, for security reasons (the snippet generates an iframe... and in some browsers "Use of window.confirm is not allowed in different origin-domain iframes"), but the code DOES work, so give it a try!
$('body').on('click', function(e) {
var target, href;
//Identifying target object
target = $(e.target);
//If the target object is a link or is contained in a link we show the confirmation message
if (e.target.tagName === 'A' || target.parents('a').length > 0) {
//Default behavior is prevented (the link doesn't work)
e.preventDefault();
if (window.confirm("Are you really really sure you want to continue?")) {
//Identify link target
if (e.target.tagName === 'A') {
href = target.attr('href');
} else {
href = target.parents('a').first().attr('href');
}
//Redirect
window.location.href = href;
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
Click me and I'll take you home
I just made a div appear that shows a message in the background.
It is behind the modal but this is better then nothing. It is kind of shady but at least you can give your user some info on why you bother her/him not to leave.
constructor($elem)
{
$(window).unbind().bind('beforeunload', (e) => this.beforeUnload(e));
}
beforeUnload(e)
{
$('#leaveWarning').show();
setTimeout(function(){
$('#leaveWarning').hide();
}, 1); // set this to 1ms .. since timers are stopped for this modal,
// the message will disappear right after the user clicked one of the options
return "This message is not relevant in most modern browsers.";
}
Here is a working Fiddle https://jsfiddle.net/sy3fda05/2/
You can't set a custom message on a modern browser instead you can use of default alert function.
checkout browser compatibility
Try this code for all all browsers supported
window.onbeforeunload = function (e) {
e = e || window.event;
// For IE and Firefox prior to version 4
if (e) {
e.returnValue = 'Sure?';
}
// For Safari
return 'Sure?';
};
All the above doesn't work in chrome at least it need to add return false otherwise nothing happen.
window.onbeforeunload = function(e) {
$('#leaveWarning').show();
// the timer is only to let the message box disappear after the user
// decides to stay on this page
// set this to 1ms .. since timers are stopped for this modal
setTimeout(function() {
$('#leaveWarning').hide();
}, 1);
//
return false;
return "This message is not relevant in most modern browsers.";
}
Related
I tried it on Chrome and Safari, neither browser works。Only one alert window in Chrome as below when I refreshed the page. If only evt.preventDefault() was used, the function didn't work. I don't know whether it and .returnValue need to be used together.
enter image description here
window.addEventListener('beforeunload',(evt)=>{
//evt.preventDefault();
let confirmationMsg = "Are you sure to quite?";
(evt || window.event).returnValue = confirmationMsg;
});
Yes, you should use both together. Chrome still requires .returnValue to be set, but the HTML specification states that you should use Event.preventDefault() instead of a return value.
This is an issue of non-conformance to the standard on Chrome's part.
https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onbeforeunload#Example
At the bottom they have detailed description of the state of beforeunload support in some of the more popular browsers.
I'm trying to show a confirmation pop before user close the tab or went to another tab like facebook, gmail, GoDaddy & others do.
My code working for Firefox but not for other browser like chrome, safari etc.
<script type="text/javascript">
var hook = true;
window.onbeforeunload = function() {
if (hook) {
return "Did you save"
}
}
function unhook() {
hook=false;
}
</script>
Call unhook() onClick for button and links
No Block URL
Please help me to get this fixed.
If you take a look at the api of window.beforeunload(), you can see that, though widely the basic unload event is supported, a custom message can only be set in internet explorer and certain versions of some browsers. So just use the normal standard message.
This feature (custom messages) was often exploited by malicous sites to interact with user in a harmful or malipulative way. This is why many browsers don't support this anymore, until some patch removes the threat for users.
Standard message solution:
window.addEventListener('beforeunload', function (e) {
// Cancel the event
e.preventDefault();
// Chrome requires returnValue to be set
e.returnValue = '';
});
Look at Ouibounce it helps detect when a user is about to leave the page(It looks at the position of the cursor). You could probably build off this library.
When using window.onbeforeunload (or $(window).on("beforeunload")), is it possible to display a custom message in that popup?
Maybe a small trick that works on major browsers?
By looking at existing answers I have the feeling this was possible in the past using things like confirm or alert or event.returnValue, but now it seems they are not working anymore.
So, how to display a custom message in the beforeunload popup? Is that even/still possible?
tl;dr - You can't set custom message anymore in most modern browsers
A quick note (since this is an old answer) - these days all major browsers don't support custom message in the beforeunload popup. There is no new way to do this. In case you still do need to support old browsers - you can find the information below.
In order to set a confirmation message before the user is closing the window you can use
jQuery
$(window).bind("beforeunload",function(event) {
return "You have some unsaved changes";
});
Javascript
window.onbeforeunload = function() {
return "Leaving this page will reset the wizard";
};
It's important to notice that you can't put confirm/alert inside beforeunload
A few more notes:
NOT all browsers support this (more info in the Browser compatibility section on MDN)
2. In Firefox you MUST do some real interaction with the page in order for this message to appear to the user.
3. Each browser can add his own text to your message.
Here are the results using the browsers I have access to:
Chrome:
Firefox:
Safari:
IE:
Just to make sure - you need to have jquery included
More information regarding the browsers support and the removal of the custom message:
Chrome removed support for custom message in ver 51
Opera removed support for custom message in ver 38
Firefox removed support for custom message in ver 44.0 (still looking for source for this information)
Safari removed support for custom message in ver 9.1
When using window.onbeforeunload (or $(window).on("beforeonload")), is it possible to display a custom message in that popup?
Not anymore. All major browsers have started ignoring the actual message and just showing their own.
By looking at existing answers I have the feeling this was possible in the past using things like confirm or alert or event.returnValue, but now it seems they are not working anymore.
Correct. A long time ago, you could use confirm or alert, more recently you could return a string from an onbeforeunload handler and that string would be displayed. Now, the content of the string is ignored and it's treated as a flag.
When using jQuery's on, you do indeed have to use returnValue on the original event:
$(window).on("beforeunload", function(e) {
// Your message won't get displayed by modern browsers; the browser's built-in
// one will be instead. But for older browsers, best to include an actual
// message instead of just "x" or similar.
return e.originalEvent.returnValue = "Your message here";
});
or the old-fasioned way:
window.onbeforeunload = function() {
return "Your message here"; // Probably won't be shown, see note above
};
That's all you can do.
As of 2021, for security reasons, it is no longer possible to display a custom message in the beforeunload popup, at least in the main browsers (Chrome, Firefox, Safari, Edge, Opera).
This is no longer possible since:
Chrome: version 51
Firefox: version 44
Safari: version 9
Edge: it has never been possible
Opera: version 38
For details see:
https://www.chromestatus.com/feature/5349061406228480
https://caniuse.com/mdn-api_windoweventhandlers_onbeforeunload_custom_text_support
An alternative approach in order to get a similar result is to catch click events related to links (that would take you away from the current page) and ask for confirmation there. It might be adjusted to include forms submission or perhaps redirections through scripts (that would require to apply a specific class and information in the elements that trigger the redirect).
Here is a working code snippet (based on jQuery) that shows you how you can do it:
Edit: the code snippet here in SO does not work on all browsers, for security reasons (the snippet generates an iframe... and in some browsers "Use of window.confirm is not allowed in different origin-domain iframes"), but the code DOES work, so give it a try!
$('body').on('click', function(e) {
var target, href;
//Identifying target object
target = $(e.target);
//If the target object is a link or is contained in a link we show the confirmation message
if (e.target.tagName === 'A' || target.parents('a').length > 0) {
//Default behavior is prevented (the link doesn't work)
e.preventDefault();
if (window.confirm("Are you really really sure you want to continue?")) {
//Identify link target
if (e.target.tagName === 'A') {
href = target.attr('href');
} else {
href = target.parents('a').first().attr('href');
}
//Redirect
window.location.href = href;
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
Click me and I'll take you home
I just made a div appear that shows a message in the background.
It is behind the modal but this is better then nothing. It is kind of shady but at least you can give your user some info on why you bother her/him not to leave.
constructor($elem)
{
$(window).unbind().bind('beforeunload', (e) => this.beforeUnload(e));
}
beforeUnload(e)
{
$('#leaveWarning').show();
setTimeout(function(){
$('#leaveWarning').hide();
}, 1); // set this to 1ms .. since timers are stopped for this modal,
// the message will disappear right after the user clicked one of the options
return "This message is not relevant in most modern browsers.";
}
Here is a working Fiddle https://jsfiddle.net/sy3fda05/2/
You can't set a custom message on a modern browser instead you can use of default alert function.
checkout browser compatibility
Try this code for all all browsers supported
window.onbeforeunload = function (e) {
e = e || window.event;
// For IE and Firefox prior to version 4
if (e) {
e.returnValue = 'Sure?';
}
// For Safari
return 'Sure?';
};
All the above doesn't work in chrome at least it need to add return false otherwise nothing happen.
window.onbeforeunload = function(e) {
$('#leaveWarning').show();
// the timer is only to let the message box disappear after the user
// decides to stay on this page
// set this to 1ms .. since timers are stopped for this modal
setTimeout(function() {
$('#leaveWarning').hide();
}, 1);
//
return false;
return "This message is not relevant in most modern browsers.";
}
When using window.onbeforeunload (or $(window).on("beforeunload")), is it possible to display a custom message in that popup?
Maybe a small trick that works on major browsers?
By looking at existing answers I have the feeling this was possible in the past using things like confirm or alert or event.returnValue, but now it seems they are not working anymore.
So, how to display a custom message in the beforeunload popup? Is that even/still possible?
tl;dr - You can't set custom message anymore in most modern browsers
A quick note (since this is an old answer) - these days all major browsers don't support custom message in the beforeunload popup. There is no new way to do this. In case you still do need to support old browsers - you can find the information below.
In order to set a confirmation message before the user is closing the window you can use
jQuery
$(window).bind("beforeunload",function(event) {
return "You have some unsaved changes";
});
Javascript
window.onbeforeunload = function() {
return "Leaving this page will reset the wizard";
};
It's important to notice that you can't put confirm/alert inside beforeunload
A few more notes:
NOT all browsers support this (more info in the Browser compatibility section on MDN)
2. In Firefox you MUST do some real interaction with the page in order for this message to appear to the user.
3. Each browser can add his own text to your message.
Here are the results using the browsers I have access to:
Chrome:
Firefox:
Safari:
IE:
Just to make sure - you need to have jquery included
More information regarding the browsers support and the removal of the custom message:
Chrome removed support for custom message in ver 51
Opera removed support for custom message in ver 38
Firefox removed support for custom message in ver 44.0 (still looking for source for this information)
Safari removed support for custom message in ver 9.1
When using window.onbeforeunload (or $(window).on("beforeonload")), is it possible to display a custom message in that popup?
Not anymore. All major browsers have started ignoring the actual message and just showing their own.
By looking at existing answers I have the feeling this was possible in the past using things like confirm or alert or event.returnValue, but now it seems they are not working anymore.
Correct. A long time ago, you could use confirm or alert, more recently you could return a string from an onbeforeunload handler and that string would be displayed. Now, the content of the string is ignored and it's treated as a flag.
When using jQuery's on, you do indeed have to use returnValue on the original event:
$(window).on("beforeunload", function(e) {
// Your message won't get displayed by modern browsers; the browser's built-in
// one will be instead. But for older browsers, best to include an actual
// message instead of just "x" or similar.
return e.originalEvent.returnValue = "Your message here";
});
or the old-fasioned way:
window.onbeforeunload = function() {
return "Your message here"; // Probably won't be shown, see note above
};
That's all you can do.
As of 2021, for security reasons, it is no longer possible to display a custom message in the beforeunload popup, at least in the main browsers (Chrome, Firefox, Safari, Edge, Opera).
This is no longer possible since:
Chrome: version 51
Firefox: version 44
Safari: version 9
Edge: it has never been possible
Opera: version 38
For details see:
https://www.chromestatus.com/feature/5349061406228480
https://caniuse.com/mdn-api_windoweventhandlers_onbeforeunload_custom_text_support
An alternative approach in order to get a similar result is to catch click events related to links (that would take you away from the current page) and ask for confirmation there. It might be adjusted to include forms submission or perhaps redirections through scripts (that would require to apply a specific class and information in the elements that trigger the redirect).
Here is a working code snippet (based on jQuery) that shows you how you can do it:
Edit: the code snippet here in SO does not work on all browsers, for security reasons (the snippet generates an iframe... and in some browsers "Use of window.confirm is not allowed in different origin-domain iframes"), but the code DOES work, so give it a try!
$('body').on('click', function(e) {
var target, href;
//Identifying target object
target = $(e.target);
//If the target object is a link or is contained in a link we show the confirmation message
if (e.target.tagName === 'A' || target.parents('a').length > 0) {
//Default behavior is prevented (the link doesn't work)
e.preventDefault();
if (window.confirm("Are you really really sure you want to continue?")) {
//Identify link target
if (e.target.tagName === 'A') {
href = target.attr('href');
} else {
href = target.parents('a').first().attr('href');
}
//Redirect
window.location.href = href;
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
Click me and I'll take you home
I just made a div appear that shows a message in the background.
It is behind the modal but this is better then nothing. It is kind of shady but at least you can give your user some info on why you bother her/him not to leave.
constructor($elem)
{
$(window).unbind().bind('beforeunload', (e) => this.beforeUnload(e));
}
beforeUnload(e)
{
$('#leaveWarning').show();
setTimeout(function(){
$('#leaveWarning').hide();
}, 1); // set this to 1ms .. since timers are stopped for this modal,
// the message will disappear right after the user clicked one of the options
return "This message is not relevant in most modern browsers.";
}
Here is a working Fiddle https://jsfiddle.net/sy3fda05/2/
You can't set a custom message on a modern browser instead you can use of default alert function.
checkout browser compatibility
Try this code for all all browsers supported
window.onbeforeunload = function (e) {
e = e || window.event;
// For IE and Firefox prior to version 4
if (e) {
e.returnValue = 'Sure?';
}
// For Safari
return 'Sure?';
};
All the above doesn't work in chrome at least it need to add return false otherwise nothing happen.
window.onbeforeunload = function(e) {
$('#leaveWarning').show();
// the timer is only to let the message box disappear after the user
// decides to stay on this page
// set this to 1ms .. since timers are stopped for this modal
setTimeout(function() {
$('#leaveWarning').hide();
}, 1);
//
return false;
return "This message is not relevant in most modern browsers.";
}
I can't seem to figure out why the following simple popup will not work in IE9. FF & Chrome popup as expected, but IE does not appear to do anything when the link is clicked. I tried the IE9 debugger, but didn't get any helpful information out of it.
In the head section:
<script type="text/javascript" language="JavaScript">
function JSPopup(linkref) {
window.open(linkref,"Report Definitions","width=600,height=480");
return false;
}
In the body:
<strong>Report Definitions</strong>
Thanks for your help,
Filip
Turns out the problem was the name given to the popup - IE doesn't allow spaces, FF & Chrome do:
window.open(linkref,"Report Definitions","width=600,height=480");
needed to be changed to:
window.open(linkref,"ReportDefinitions","width=600,height=480");
This works across browsers.
Filip
This is part of the security changes made in IE6. Now you can only call "window.open" from within a user-initiated event. For example, your code would work inside an element's onclick event. The "window.open" http://msdn.microsoft.com/en-us/library/ms536651(VS.85).aspx MSDN page says this:
"This method must use a user-initiated action, such as clicking on a link or tabbing to a link and pressing enter, to open a pop-up window. The Pop-up Blocker feature in Internet Explorer 6 blocks windows that are opened without being initiated by the user."
Example...
function popUpWin(url,wtitle,wprop){
if (!window.open){ return; } // checking if we can't do this basic function
// Kill if(win), since win was a local var this was a usless check
var win = window.open(url,wtitle,wprop);
// next line important in case you open multiple with the same 'wtitle'
// to make sure the window is reused and refocused.
if (win && win.focus){ win.focus(); }
return false;
}