Related
Is there any cross-browser JavaScript/jQuery code to detect if the browser or a browser tab is being closed, but not due to a link being clicked?
If I get you correctly, you want to know when a tab/window is effectively closed. Well, AFAIK the only way in JavaScript to detect that is to use either onunload or onbeforeunload events.
Unfortunately (or fortunately?), those events are also fired when you leave a site over a link or your browsers back button. So this is the best answer I can give, I don't think you can natively detect a pure close in JavaScript. Correct me if I'm wrong here.
From MDN Documentation
For some reasons, Webkit-based browsers don't follow the spec for the dialog box. An almost cross-working example would be close from the below example.
window.addEventListener("beforeunload", function (e) {
var confirmationMessage = "\o/";
(e || window.event).returnValue = confirmationMessage; //Gecko + IE
return confirmationMessage; //Webkit, Safari, Chrome
});
This example for handling all browsers.
Simple Solution
window.onbeforeunload = function () {
return "Do you really want to close?";
};
<body onbeforeunload="ConfirmClose()" onunload="HandleOnClose()">
var myclose = false;
function ConfirmClose()
{
if (event.clientY < 0)
{
event.returnValue = 'You have closed the browser. Do you want to logout from your application?';
setTimeout('myclose=false',10);
myclose=true;
}
}
function HandleOnClose()
{
if (myclose==true)
{
//the url of your logout page which invalidate session on logout
location.replace('/contextpath/j_spring_security_logout') ;
}
}
//This is working in IE7, if you are closing tab or browser with only one tab
For similar tasks, you can use sessionStorage to store data locally until the browser tab is closed.
The sessionStorage object stores data for only one session (the data is deleted when the browser tab is closed).(W3Schools)
This is my pen.
<div id="Notice">
<span title="remove this until browser tab is closed"><u>dismiss</u>.</span>
</div>
<script>
$("#Notice").click(function() {
//set sessionStorage on click
sessionStorage.setItem("dismissNotice", "Hello");
$("#Notice").remove();
});
if (sessionStorage.getItem("dismissNotice"))
//When sessionStorage is set Do stuff...
$("#Notice").remove();
</script>
I needed to automatically log the user out when the browser or tab closes, but not when the user navigates to other links. I also did not want a confirmation prompt shown when that happens. After struggling with this for a while, especially with IE and Edge, here's what I ended doing (checked working with IE 11, Edge, Chrome, and Firefox) after basing off the approach by this answer.
First, start a countdown timer on the server in the beforeunload event handler in JS. The ajax calls need to be synchronous for IE and Edge to work properly. You also need to use return; to prevent the confirmation dialog from showing like this:
window.addEventListener("beforeunload", function (e) {
$.ajax({
type: "POST",
url: startTimerUrl,
async: false
});
return;
});
Starting the timer sets the cancelLogout flag to false. If the user refreshes the page or navigates to another internal link, the cancelLogout flag on the server is set to true. Once the timer event elapses, it checks the cancelLogout flag to see if the logout event has been cancelled. If the timer has been cancelled, then it would stop the timer. If the browser or tab was closed, then the cancelLogout flag would remain false and the event handler would log the user out.
Implementation note: I'm using ASP.NET MVC 5 and I'm cancelling logout in an overridden Controller.OnActionExecuted() method.
I found a way, that works on all of my browsers.
Tested on following versions:
Firefox 57, Internet Explorer 11, Edge 41, one of the latested Chrome (it won't show my version)
Note: onbeforeunload fires if you leave the page in any way possible (refresh, close browser, redirect, link, submit..). If you only want it to happen on browser close, simply bind the event handlers.
$(document).ready(function(){
var validNavigation = false;
// Attach the event keypress to exclude the F5 refresh (includes normal refresh)
$(document).bind('keypress', function(e) {
if (e.keyCode == 116){
validNavigation = true;
}
});
// Attach the event click for all links in the page
$("a").bind("click", function() {
validNavigation = true;
});
// Attach the event submit for all forms in the page
$("form").bind("submit", function() {
validNavigation = true;
});
// Attach the event click for all inputs in the page
$("input[type=submit]").bind("click", function() {
validNavigation = true;
});
window.onbeforeunload = function() {
if (!validNavigation) {
// -------> code comes here
}
};
});
There is no event, but there is a property window.closed which is supported in all major browsers as of the time of this writing. Thus if you really needed to know you could poll the window to check that property.
if(myWindow.closed){do things}
Note:
Polling anything is generally not the best solution. The window.onbeforeunload event should be used if possible, the only caveat being that it also fires if you navigate away.
Sorry, I was not able to add a comment to one of existing answers, but in case you wanted to implement a kind of warning dialog, I just wanted to mention that any event handler function has an argument - event. In your case you can call event.preventDefault() to disallow leaving the page automatically, then issue your own dialog. I consider this a way better option than using standard ugly and insecure alert(). I personally implemented my own set of dialog boxes based on kendoWindow object (Telerik's Kendo UI, which is almost fully open-sourced, except of kendoGrid and kendoEditor). You can also use dialog boxes from jQuery UI. Please note though, that such things are asynchronous, and you will need to bind a handler to onclick event of every button, but this is all quite easy to implement.
However, I do agree that the lack of the real close event is terrible: if you, for instance, want to reset your session state at the back-end only on case of the real close, it's a problem.
$(window).unload( function () { alert("Bye now!"); } );
onunload is the answer for Chrome. According to caniuse its crossbrowser. But not all browsers react the same.
window.onunload = function(){
alert("The window is closing now!");
}
developer.mozilla.org
These events fire when the window is unloading its content and resources.
For Chrome:
onunload executes only on page close. It doesn't execute even on page refresh and on navigating to a different page.
For Firefox v86.0:
It wouldn't execute at all. Page refresh, navigating away, closing browser tab, closing browser, nothing.
Since no one has mentioned it yet (8+ years later): A WebSocket can be another effective way to detect a closed tab. As long as the tab is open and pointed at the host, the client is able to maintain an active WebSocket connection to the host.
Caveat: Please note that this solution is really only viable for a project if a WebSocket doesn't require any additional significant overhead from what you are already doing.
Within a sensible timeout period (e.g. 2 minutes), the server side can determine that the client has gone away after the WebSocket has disconnected and perform whatever action is desired such as removing uploaded temp files. (In my extremely specialized use-case, my goal was to terminate a localhost app server three seconds after the WebSocket connection drops and all CGI/FastCGI activity terminates - any other keep-alive connections don't affect me.)
I had problems getting the onunload event handler to work properly with beacons (as recommended by this answer). Closing the tab did not appear to trigger the beacon and open tabs triggered it in ways that could potentially cause problems. A WebSocket solved the problem I was running into more cleanly because the connection closes roughly around the same time that the tab closes and switching pages within the application simply opens a new WebSocket connection well within the delay window.
It can be used to alert the user if some data is unsaved or something like that. This method works when the tab is closed or when the browser is closed, or webpage refresh.
It won't work unless the user has not interacted with the webpage, this is a mechanism to fight malicious websites..... there will be no popup unless you atleast make a click or touch on the website window.
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<form>
<textarea placeholder = "Write...."></textarea>
</form>
<script type="text/javascript">
window.addEventListener('beforeunload', function (e) {
e.returnValue = '';
});
</script>
</body>
</html>
window.onbeforeunload = function() {
console.log('event');
return false; //here also can be string, that will be shown to the user
}
window.addEventListener("beforeunload", function (e) {
var confirmationMessage = "tab close";
(e || window.event).returnValue = confirmationMessage; //Gecko + IE
sendkeylog(confirmationMessage);
return confirmationMessage; //Webkit, Safari, Chrome etc.
});
//Detect Browser or Tab Close Events
$(window).on('beforeunload',function(e) {
e = e || window.event;
var localStorageTime = localStorage.getItem('storagetime')
if(localStorageTime!=null && localStorageTime!=undefined){
var currentTime = new Date().getTime(),
timeDifference = currentTime - localStorageTime;
if(timeDifference<25){//Browser Closed
localStorage.removeItem('storagetime');
}else{//Browser Tab Closed
localStorage.setItem('storagetime',new Date().getTime());
}
}else{
localStorage.setItem('storagetime',new Date().getTime());
}
});
JSFiddle Link
Hi all, I was able to achieve 'Detect Browser and Tab Close Event' clicks by using browser local storage and timestamp. Hope all of you will get solved your problems by using this solution.
After my initial research i found that when we close a browser, the browser will close all the tabs one by one to completely close the browser. Hence, i observed that there will be very little time delay between closing the tabs. So I taken this time delay as my main validation point and able to achieve the browser and tab close event detection.
I tested it on Chrome Browser Version 76.0.3809.132 and found working
:) Vote Up if you found my answer helpful....
I have tried all above solutions, none of them really worked for me, specially because there are some Telerik components in my project which have 'Close' button for popup windows, and it calls 'beforeunload' event. Also, button selector does not work properly when you have Telerik grid in your page (I mean buttons inside the grid) So, I couldn't use any of above suggestions. Finally this is the solution worked for me.
I have added an onUnload event on the body tag of _Layout.cshtml. Something like this:
<body onUnload="LogOff()">
and then add the LogOff function to redirect to Account/LogOff which is a built-in method in Asp.Net MVC. Now, when I close the browser or tab, it redirect to LogOff method and user have to login when returns. I have tested it in both Chrome & Firefox. And it works!
function LogOff() {
$.ajax({
url: "/Account/LogOff",
success: function (result) {
}
});
}
window.onbeforeunload = function ()
{
if (isProcess > 0)
{
return true;
}
else
{
//do something
}
};
This function show a confirmation dialog box if you close window or refresh page during any process in browser.This function work in all browsers.You have to set isProcess var in your ajax process.
It is possible to check it with the help of window.closed in an event handler on 'unload' event like this, but timeout usage is required (so result cannot be guaranteed if smth delay or prevent window from closure):
Example of JSFiddle (Tested on lates Safari, FF, Chrome, Edge and IE11 )
var win = window.open('', '', 'width=200,height=50,left=200,top=50');
win.document.write(`<html>
<head><title>CHILD WINDOW/TAB</title></head>
<body><h2>CHILD WINDOW/TAB</h2></body>
</html>`);
win.addEventListener('load',() => {
document.querySelector('.status').innerHTML += '<p>Child was loaded!</p>';
});
win.addEventListener('unload',() => {
document.querySelector('.status').innerHTML += '<p>Child was unloaded!</p>';
setTimeout(()=>{
document.querySelector('.status').innerHTML += getChildWindowStatus();
},1000);
});
win.document.close()
document.querySelector('.check-child-window').onclick = ()=> {
alert(getChildWindowStatus());
}
function getChildWindowStatus() {
if (win.closed) {
return 'Child window has been closed!';
} else {
return 'Child window has not been closed!';
}
}
There have been updates to the browser to better tack the user when leaving the app. The event 'visibilitychange' lets you tack when a page is being hidden from another tab or being closed. You can track the document visibility state. The property document.visibilityState will return the current state. You will need to track the sign in and out but its closer to the goal.
This is supported by more newer browser but safari (as we know) never conforms to standards. You can use 'pageshow' and 'pagehide' to work in safari.
You can even use new API's like sendBeacon to send a one way request to the server when the tab is being closed and shouldn't expect a response.
I build a quick port of a class I use to track this. I had to remove some calls in the framework so it might be buggy however this should get you started.
export class UserLoginStatus
{
/**
* This will add the events and sign the user in.
*/
constructor()
{
this.addEvents();
this.signIn();
}
/**
* This will check if the browser is safari.
*
* #returns {bool}
*/
isSafari()
{
if(navigator && /Safari/.test(navigator.userAgent) && /Chrome/.test(navigator.userAgent))
{
return (/Google Inc/.test(navigator.vendor) === false);
}
return false;
}
/**
* This will setup the events array by browser.
*
* #returns {array}
*/
setupEvents()
{
let events = [
['visibilitychange', document, () =>
{
if (document.visibilityState === 'visible')
{
this.signIn();
return;
}
this.signOut();
}]
];
// we need to setup events for safari
if(this.isSafari())
{
events.push(['pageshow', window, (e) =>
{
if(e.persisted === false)
{
this.signIn();
}
}]);
events.push(['pagehide', window, (e) =>
{
if(e.persisted === false)
{
this.signOut();
}
}]);
}
return events;
}
/**
* This will add the events.
*/
addEvents()
{
let events = this.setupEvents();
if(!events || events.length < 1)
{
return;
}
for(var i = 0, length = events.length; i < length; i++)
{
var event = events[i];
if(!event)
{
continue;
}
event[1].addEventListener(event[0], event[3]);
}
}
/**
*
* #param {string} url
* #param {string} params
*/
async fetch(url, params)
{
await fetch(url,
{
method: 'POST',
body: JSON.stringify(params)
});
}
/**
* This will sign in the user.
*/
signIn()
{
// user is the app
const url = '/auth/login';
let params = 'userId=' + data.userId;
this.fetch(url, params);
}
/**
* This will sign out the user.
*/
signOut()
{
// user is leaving the app
const url = '/auth/logout';
let params = 'userId=' + data.userId;
if(!('sendBeacon' in window.navigator))
{
// normal ajax request here
this.fetch(url, params);
return;
}
// use a beacon for a more modern request the does not return a response
navigator.sendBeacon(url, new URLSearchParams(params));
}
}
My approach would be along these lines:
Listen for changes in the url with onpopstate and set a sessionStorage variable with 1
Listen for page load and set that sessionStorage variable to 0
On beforeunload, check if the variable is 0. If so it means that the user is closing and not changing url.
This is still a roundabout way to go, but makes sense to me
As #jAndy mentioned, there is no properly javascript code to detect a window being closed.
I started from what #Syno had proposed.
I had pass though a situation like that and provided you follow these steps, you'll be able to detect it.
I tested it on Chrome 67+ and Firefox 61+.
var wrapper = function () { //ignore this
var closing_window = false;
$(window).on('focus', function () {
closing_window = false;
//if the user interacts with the window, then the window is not being
//closed
});
$(window).on('blur', function () {
closing_window = true;
if (!document.hidden) { //when the window is being minimized
closing_window = false;
}
$(window).on('resize', function (e) { //when the window is being maximized
closing_window = false;
});
$(window).off('resize'); //avoid multiple listening
});
$('html').on('mouseleave', function () {
closing_window = true;
//if the user is leaving html, we have more reasons to believe that he's
//leaving or thinking about closing the window
});
$('html').on('mouseenter', function () {
closing_window = false;
//if the user's mouse its on the page, it means you don't need to logout
//them, didn't it?
});
$(document).on('keydown', function (e) {
if (e.keyCode == 91 || e.keyCode == 18) {
closing_window = false; //shortcuts for ALT+TAB and Window key
}
if (e.keyCode == 116 || (e.ctrlKey && e.keyCode == 82)) {
closing_window = false; //shortcuts for F5 and CTRL+F5 and CTRL+R
}
});
// Prevent logout when clicking in a hiperlink
$(document).on("click", "a", function () {
closing_window = false;
});
// Prevent logout when clicking in a button (if these buttons rediret to some page)
$(document).on("click", "button", function () {
closing_window = false;
});
// Prevent logout when submiting
$(document).on("submit", "form", function () {
closing_window = false;
});
// Prevent logout when submiting
$(document).on("click", "input[type=submit]", function () {
closing_window = false;
});
var toDoWhenClosing = function() {
//write a code here likes a user logout, example:
//$.ajax({
// url: '/MyController/MyLogOutAction',
// async: false,
// data: {
// },
// error: function () {
// },
// success: function (data) {
// },
//});
};
window.onbeforeunload = function () {
if (closing_window) {
toDoWhenClosing();
}
};
};
try this,
I am sure this will work for you.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type='text/javascript'>
$(function() {
try{
opera.setOverrideHistoryNavigationMode('compatible');
history.navigationMode = 'compatible';
}catch(e){}
function ReturnMessage()
{
return "wait";
}
function UnBindWindow()
{
$(window).unbind('beforeunload', ReturnMessage);
}
$(window).bind('beforeunload',ReturnMessage );
});
</script>
Try this. It will work. jquery unload method is depreceted.
window.onbeforeunload = function(event) {
event.returnValue = "Write something clever here..";
};
I'm trying to open a popup window, do some stuff, and send a message back to the opening window so I can do some more stuff with the data it sends.
Essentially, I'm adapting the process outlined here.
This is my code on the "opening window". It runs when a social connect button is clicked. The code opens a popup window and assigns a listener event on the opening window to receive a message from the popup:
//Do the operation
let windowObjectReference = null;
let previousUrl = null;
const openSignInWindow = (url, name) => {
// remove any existing event listeners
window.removeEventListener('message', receiveMessage);
// window features
const strWindowFeatures =
'toolbar=no, menubar=no, width=600, height=700, top=100, left=100';
if (windowObjectReference === null || windowObjectReference.closed) {
/* if the pointer to the window object in memory does not exist
or if such pointer exists but the window was closed */
windowObjectReference = window.open(url, name, strWindowFeatures);
} else if (previousUrl !== url) {
/* if the resource to load is different,
then we load it in the already opened secondary window and then
we bring such window back on top/in front of its parent window. */
windowObjectReference = window.open(url, name, strWindowFeatures);
windowObjectReference.focus();
} else {
/* else the window reference must exist and the window
is not closed; therefore, we can bring it back on top of any other
window with the focus() method. There would be no need to re-create
the window or to reload the referenced resource. */
windowObjectReference.focus();
}
// add the listener for receiving a message from the popup
window.addEventListener('message', event => receiveMessage(event), false);
// assign the previous URL
previousUrl = url;
};
const receiveMessage = event => {
// Do we trust the sender of this message? (might be different from what we originally opened, for example).
if (event.origin !== websiteHomeUrlNoSlash) {
return;
}
const { data } = event;
console.log(data); //<--- THIS WHERE I'm SEEING DUPLICATES
};
//Invoke the function
openSignInWindow(url, name);
In the popup users login to their social account and then get redirected to a page on my app where the below code is run. The code posts a message back to the opening window and then closes the popup:
// Get the message data
const messageObj = {
pluginReason: pluginReasonVar,
displayName: displayNameVar,
provider: providerVar,
};
if (window.opener) {
// send them to the opening window
window.opener.postMessage(messageObj, websiteHomeUrlNoSlash);
// close the popup
if (closePopup) {
window.close();
}
}
Everything almost works as expected. Users can login to their social accounts and all the redirections and opening and closing of the popup works fine.
The Problem:
If users go through the Social Connect process multiple times without refreshing the page, then the message data that is printed to the console is duplicated more and more each run.
For example:
On the 1st run console.log(data) is printed once. So far this works as expected.
On the 2nd run console.log(data) prints twice. It should only be printed once.
On the 3rd run console.log(data) prints three times. It should only be printed once.
Each time the Social Connect process is run it should only print once. But somehow it's adding a duplicate copy on each subsequent run.
This duplication keeps growing until the users refreshes the page, which starts the count back at one.
I want to do more data manipulation at the point of the console.log(data) but I can't do that while it's creating duplicates copies on each subsequent run.
How do I stop that from happening?
Maybe it's because the listener event is not detaching? If so, how do I fix that?
You have created an anonymous method (event) => { } as a wrapper and attached it to the addEventListener method.
window.addEventListener('message', event => receiveMessage(event), false);
It can't be removed by
window.removeEventListener('message', receiveMessage);
To fix it, make changes like this:
window.addEventListener('message', receiveMessage, false);
Meanwhile, if the method receiveMessage gets lost every time the window has been closed, it's better to move the removeEventListener part inside the receiveMessage.
const receiveMessage = (event)=> {
window.removeEventListener('message', receiveMessage);
// do something else
}
Is there any cross-browser JavaScript/jQuery code to detect if the browser or a browser tab is being closed, but not due to a link being clicked?
If I get you correctly, you want to know when a tab/window is effectively closed. Well, AFAIK the only way in JavaScript to detect that is to use either onunload or onbeforeunload events.
Unfortunately (or fortunately?), those events are also fired when you leave a site over a link or your browsers back button. So this is the best answer I can give, I don't think you can natively detect a pure close in JavaScript. Correct me if I'm wrong here.
From MDN Documentation
For some reasons, Webkit-based browsers don't follow the spec for the dialog box. An almost cross-working example would be close from the below example.
window.addEventListener("beforeunload", function (e) {
var confirmationMessage = "\o/";
(e || window.event).returnValue = confirmationMessage; //Gecko + IE
return confirmationMessage; //Webkit, Safari, Chrome
});
This example for handling all browsers.
Simple Solution
window.onbeforeunload = function () {
return "Do you really want to close?";
};
<body onbeforeunload="ConfirmClose()" onunload="HandleOnClose()">
var myclose = false;
function ConfirmClose()
{
if (event.clientY < 0)
{
event.returnValue = 'You have closed the browser. Do you want to logout from your application?';
setTimeout('myclose=false',10);
myclose=true;
}
}
function HandleOnClose()
{
if (myclose==true)
{
//the url of your logout page which invalidate session on logout
location.replace('/contextpath/j_spring_security_logout') ;
}
}
//This is working in IE7, if you are closing tab or browser with only one tab
For similar tasks, you can use sessionStorage to store data locally until the browser tab is closed.
The sessionStorage object stores data for only one session (the data is deleted when the browser tab is closed).(W3Schools)
This is my pen.
<div id="Notice">
<span title="remove this until browser tab is closed"><u>dismiss</u>.</span>
</div>
<script>
$("#Notice").click(function() {
//set sessionStorage on click
sessionStorage.setItem("dismissNotice", "Hello");
$("#Notice").remove();
});
if (sessionStorage.getItem("dismissNotice"))
//When sessionStorage is set Do stuff...
$("#Notice").remove();
</script>
I needed to automatically log the user out when the browser or tab closes, but not when the user navigates to other links. I also did not want a confirmation prompt shown when that happens. After struggling with this for a while, especially with IE and Edge, here's what I ended doing (checked working with IE 11, Edge, Chrome, and Firefox) after basing off the approach by this answer.
First, start a countdown timer on the server in the beforeunload event handler in JS. The ajax calls need to be synchronous for IE and Edge to work properly. You also need to use return; to prevent the confirmation dialog from showing like this:
window.addEventListener("beforeunload", function (e) {
$.ajax({
type: "POST",
url: startTimerUrl,
async: false
});
return;
});
Starting the timer sets the cancelLogout flag to false. If the user refreshes the page or navigates to another internal link, the cancelLogout flag on the server is set to true. Once the timer event elapses, it checks the cancelLogout flag to see if the logout event has been cancelled. If the timer has been cancelled, then it would stop the timer. If the browser or tab was closed, then the cancelLogout flag would remain false and the event handler would log the user out.
Implementation note: I'm using ASP.NET MVC 5 and I'm cancelling logout in an overridden Controller.OnActionExecuted() method.
I found a way, that works on all of my browsers.
Tested on following versions:
Firefox 57, Internet Explorer 11, Edge 41, one of the latested Chrome (it won't show my version)
Note: onbeforeunload fires if you leave the page in any way possible (refresh, close browser, redirect, link, submit..). If you only want it to happen on browser close, simply bind the event handlers.
$(document).ready(function(){
var validNavigation = false;
// Attach the event keypress to exclude the F5 refresh (includes normal refresh)
$(document).bind('keypress', function(e) {
if (e.keyCode == 116){
validNavigation = true;
}
});
// Attach the event click for all links in the page
$("a").bind("click", function() {
validNavigation = true;
});
// Attach the event submit for all forms in the page
$("form").bind("submit", function() {
validNavigation = true;
});
// Attach the event click for all inputs in the page
$("input[type=submit]").bind("click", function() {
validNavigation = true;
});
window.onbeforeunload = function() {
if (!validNavigation) {
// -------> code comes here
}
};
});
There is no event, but there is a property window.closed which is supported in all major browsers as of the time of this writing. Thus if you really needed to know you could poll the window to check that property.
if(myWindow.closed){do things}
Note:
Polling anything is generally not the best solution. The window.onbeforeunload event should be used if possible, the only caveat being that it also fires if you navigate away.
Sorry, I was not able to add a comment to one of existing answers, but in case you wanted to implement a kind of warning dialog, I just wanted to mention that any event handler function has an argument - event. In your case you can call event.preventDefault() to disallow leaving the page automatically, then issue your own dialog. I consider this a way better option than using standard ugly and insecure alert(). I personally implemented my own set of dialog boxes based on kendoWindow object (Telerik's Kendo UI, which is almost fully open-sourced, except of kendoGrid and kendoEditor). You can also use dialog boxes from jQuery UI. Please note though, that such things are asynchronous, and you will need to bind a handler to onclick event of every button, but this is all quite easy to implement.
However, I do agree that the lack of the real close event is terrible: if you, for instance, want to reset your session state at the back-end only on case of the real close, it's a problem.
$(window).unload( function () { alert("Bye now!"); } );
onunload is the answer for Chrome. According to caniuse its crossbrowser. But not all browsers react the same.
window.onunload = function(){
alert("The window is closing now!");
}
developer.mozilla.org
These events fire when the window is unloading its content and resources.
For Chrome:
onunload executes only on page close. It doesn't execute even on page refresh and on navigating to a different page.
For Firefox v86.0:
It wouldn't execute at all. Page refresh, navigating away, closing browser tab, closing browser, nothing.
Since no one has mentioned it yet (8+ years later): A WebSocket can be another effective way to detect a closed tab. As long as the tab is open and pointed at the host, the client is able to maintain an active WebSocket connection to the host.
Caveat: Please note that this solution is really only viable for a project if a WebSocket doesn't require any additional significant overhead from what you are already doing.
Within a sensible timeout period (e.g. 2 minutes), the server side can determine that the client has gone away after the WebSocket has disconnected and perform whatever action is desired such as removing uploaded temp files. (In my extremely specialized use-case, my goal was to terminate a localhost app server three seconds after the WebSocket connection drops and all CGI/FastCGI activity terminates - any other keep-alive connections don't affect me.)
I had problems getting the onunload event handler to work properly with beacons (as recommended by this answer). Closing the tab did not appear to trigger the beacon and open tabs triggered it in ways that could potentially cause problems. A WebSocket solved the problem I was running into more cleanly because the connection closes roughly around the same time that the tab closes and switching pages within the application simply opens a new WebSocket connection well within the delay window.
It can be used to alert the user if some data is unsaved or something like that. This method works when the tab is closed or when the browser is closed, or webpage refresh.
It won't work unless the user has not interacted with the webpage, this is a mechanism to fight malicious websites..... there will be no popup unless you atleast make a click or touch on the website window.
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<form>
<textarea placeholder = "Write...."></textarea>
</form>
<script type="text/javascript">
window.addEventListener('beforeunload', function (e) {
e.returnValue = '';
});
</script>
</body>
</html>
window.onbeforeunload = function() {
console.log('event');
return false; //here also can be string, that will be shown to the user
}
window.addEventListener("beforeunload", function (e) {
var confirmationMessage = "tab close";
(e || window.event).returnValue = confirmationMessage; //Gecko + IE
sendkeylog(confirmationMessage);
return confirmationMessage; //Webkit, Safari, Chrome etc.
});
//Detect Browser or Tab Close Events
$(window).on('beforeunload',function(e) {
e = e || window.event;
var localStorageTime = localStorage.getItem('storagetime')
if(localStorageTime!=null && localStorageTime!=undefined){
var currentTime = new Date().getTime(),
timeDifference = currentTime - localStorageTime;
if(timeDifference<25){//Browser Closed
localStorage.removeItem('storagetime');
}else{//Browser Tab Closed
localStorage.setItem('storagetime',new Date().getTime());
}
}else{
localStorage.setItem('storagetime',new Date().getTime());
}
});
JSFiddle Link
Hi all, I was able to achieve 'Detect Browser and Tab Close Event' clicks by using browser local storage and timestamp. Hope all of you will get solved your problems by using this solution.
After my initial research i found that when we close a browser, the browser will close all the tabs one by one to completely close the browser. Hence, i observed that there will be very little time delay between closing the tabs. So I taken this time delay as my main validation point and able to achieve the browser and tab close event detection.
I tested it on Chrome Browser Version 76.0.3809.132 and found working
:) Vote Up if you found my answer helpful....
I have tried all above solutions, none of them really worked for me, specially because there are some Telerik components in my project which have 'Close' button for popup windows, and it calls 'beforeunload' event. Also, button selector does not work properly when you have Telerik grid in your page (I mean buttons inside the grid) So, I couldn't use any of above suggestions. Finally this is the solution worked for me.
I have added an onUnload event on the body tag of _Layout.cshtml. Something like this:
<body onUnload="LogOff()">
and then add the LogOff function to redirect to Account/LogOff which is a built-in method in Asp.Net MVC. Now, when I close the browser or tab, it redirect to LogOff method and user have to login when returns. I have tested it in both Chrome & Firefox. And it works!
function LogOff() {
$.ajax({
url: "/Account/LogOff",
success: function (result) {
}
});
}
window.onbeforeunload = function ()
{
if (isProcess > 0)
{
return true;
}
else
{
//do something
}
};
This function show a confirmation dialog box if you close window or refresh page during any process in browser.This function work in all browsers.You have to set isProcess var in your ajax process.
It is possible to check it with the help of window.closed in an event handler on 'unload' event like this, but timeout usage is required (so result cannot be guaranteed if smth delay or prevent window from closure):
Example of JSFiddle (Tested on lates Safari, FF, Chrome, Edge and IE11 )
var win = window.open('', '', 'width=200,height=50,left=200,top=50');
win.document.write(`<html>
<head><title>CHILD WINDOW/TAB</title></head>
<body><h2>CHILD WINDOW/TAB</h2></body>
</html>`);
win.addEventListener('load',() => {
document.querySelector('.status').innerHTML += '<p>Child was loaded!</p>';
});
win.addEventListener('unload',() => {
document.querySelector('.status').innerHTML += '<p>Child was unloaded!</p>';
setTimeout(()=>{
document.querySelector('.status').innerHTML += getChildWindowStatus();
},1000);
});
win.document.close()
document.querySelector('.check-child-window').onclick = ()=> {
alert(getChildWindowStatus());
}
function getChildWindowStatus() {
if (win.closed) {
return 'Child window has been closed!';
} else {
return 'Child window has not been closed!';
}
}
There have been updates to the browser to better tack the user when leaving the app. The event 'visibilitychange' lets you tack when a page is being hidden from another tab or being closed. You can track the document visibility state. The property document.visibilityState will return the current state. You will need to track the sign in and out but its closer to the goal.
This is supported by more newer browser but safari (as we know) never conforms to standards. You can use 'pageshow' and 'pagehide' to work in safari.
You can even use new API's like sendBeacon to send a one way request to the server when the tab is being closed and shouldn't expect a response.
I build a quick port of a class I use to track this. I had to remove some calls in the framework so it might be buggy however this should get you started.
export class UserLoginStatus
{
/**
* This will add the events and sign the user in.
*/
constructor()
{
this.addEvents();
this.signIn();
}
/**
* This will check if the browser is safari.
*
* #returns {bool}
*/
isSafari()
{
if(navigator && /Safari/.test(navigator.userAgent) && /Chrome/.test(navigator.userAgent))
{
return (/Google Inc/.test(navigator.vendor) === false);
}
return false;
}
/**
* This will setup the events array by browser.
*
* #returns {array}
*/
setupEvents()
{
let events = [
['visibilitychange', document, () =>
{
if (document.visibilityState === 'visible')
{
this.signIn();
return;
}
this.signOut();
}]
];
// we need to setup events for safari
if(this.isSafari())
{
events.push(['pageshow', window, (e) =>
{
if(e.persisted === false)
{
this.signIn();
}
}]);
events.push(['pagehide', window, (e) =>
{
if(e.persisted === false)
{
this.signOut();
}
}]);
}
return events;
}
/**
* This will add the events.
*/
addEvents()
{
let events = this.setupEvents();
if(!events || events.length < 1)
{
return;
}
for(var i = 0, length = events.length; i < length; i++)
{
var event = events[i];
if(!event)
{
continue;
}
event[1].addEventListener(event[0], event[3]);
}
}
/**
*
* #param {string} url
* #param {string} params
*/
async fetch(url, params)
{
await fetch(url,
{
method: 'POST',
body: JSON.stringify(params)
});
}
/**
* This will sign in the user.
*/
signIn()
{
// user is the app
const url = '/auth/login';
let params = 'userId=' + data.userId;
this.fetch(url, params);
}
/**
* This will sign out the user.
*/
signOut()
{
// user is leaving the app
const url = '/auth/logout';
let params = 'userId=' + data.userId;
if(!('sendBeacon' in window.navigator))
{
// normal ajax request here
this.fetch(url, params);
return;
}
// use a beacon for a more modern request the does not return a response
navigator.sendBeacon(url, new URLSearchParams(params));
}
}
My approach would be along these lines:
Listen for changes in the url with onpopstate and set a sessionStorage variable with 1
Listen for page load and set that sessionStorage variable to 0
On beforeunload, check if the variable is 0. If so it means that the user is closing and not changing url.
This is still a roundabout way to go, but makes sense to me
As #jAndy mentioned, there is no properly javascript code to detect a window being closed.
I started from what #Syno had proposed.
I had pass though a situation like that and provided you follow these steps, you'll be able to detect it.
I tested it on Chrome 67+ and Firefox 61+.
var wrapper = function () { //ignore this
var closing_window = false;
$(window).on('focus', function () {
closing_window = false;
//if the user interacts with the window, then the window is not being
//closed
});
$(window).on('blur', function () {
closing_window = true;
if (!document.hidden) { //when the window is being minimized
closing_window = false;
}
$(window).on('resize', function (e) { //when the window is being maximized
closing_window = false;
});
$(window).off('resize'); //avoid multiple listening
});
$('html').on('mouseleave', function () {
closing_window = true;
//if the user is leaving html, we have more reasons to believe that he's
//leaving or thinking about closing the window
});
$('html').on('mouseenter', function () {
closing_window = false;
//if the user's mouse its on the page, it means you don't need to logout
//them, didn't it?
});
$(document).on('keydown', function (e) {
if (e.keyCode == 91 || e.keyCode == 18) {
closing_window = false; //shortcuts for ALT+TAB and Window key
}
if (e.keyCode == 116 || (e.ctrlKey && e.keyCode == 82)) {
closing_window = false; //shortcuts for F5 and CTRL+F5 and CTRL+R
}
});
// Prevent logout when clicking in a hiperlink
$(document).on("click", "a", function () {
closing_window = false;
});
// Prevent logout when clicking in a button (if these buttons rediret to some page)
$(document).on("click", "button", function () {
closing_window = false;
});
// Prevent logout when submiting
$(document).on("submit", "form", function () {
closing_window = false;
});
// Prevent logout when submiting
$(document).on("click", "input[type=submit]", function () {
closing_window = false;
});
var toDoWhenClosing = function() {
//write a code here likes a user logout, example:
//$.ajax({
// url: '/MyController/MyLogOutAction',
// async: false,
// data: {
// },
// error: function () {
// },
// success: function (data) {
// },
//});
};
window.onbeforeunload = function () {
if (closing_window) {
toDoWhenClosing();
}
};
};
try this,
I am sure this will work for you.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type='text/javascript'>
$(function() {
try{
opera.setOverrideHistoryNavigationMode('compatible');
history.navigationMode = 'compatible';
}catch(e){}
function ReturnMessage()
{
return "wait";
}
function UnBindWindow()
{
$(window).unbind('beforeunload', ReturnMessage);
}
$(window).bind('beforeunload',ReturnMessage );
});
</script>
Try this. It will work. jquery unload method is depreceted.
window.onbeforeunload = function(event) {
event.returnValue = "Write something clever here..";
};
I have an iframe with a form in it, and in that iframe I have the following:
// Send a message to the parent window
window.parent.postMessage({
event: 'submit'
}, '*');
The above is supposed to send a message to the parent window when the form is submitted.
In the parent window I have the following:
function receiveMessage(event) {
var origin = event.origin;
if (origin !== 'https://iframe.domain') {
return;
} else {
console.log('Submitted!');
}
}
window.addEventListener('message', receiveMessage, false);
The problem I seem to be having is that the code on the parent window is executing immediately without a message being sent from the iframe form being submitted. It is also executing over and over again. It logs "Submitted!" in the console over and over again for as long as I let it run.
How can this function run without the form being submitted to send the function, and why is it running over and over again?
In my iframe I moved the postMessage() to the footer, and checked for a div that is only available after my form is submitted. If the div exists I send a message to the parent window. This is the exact code in my iframe now.
// if the form has submitted and the confirmation message
// div exists send a messge to the parent window
if (jQuery('#gform_confirmation_wrapper_1').length) {
// Send a message to the parent window
parent.postMessage({
event: 'formSubmit'
}, '*');
}
On my parent window I created the function, checked the domain the message was coming from, and checked for the exact message being sent with if (event.data.event === 'formSubmit'). If that message, which was only sent from my iframe if the form's confirmation div existed, matched exactly formSubmitted then I pushed the event to the datalayer of Google Tag Manager. This is the exact code that is working on my dev site now.
// create function to push event to GTM if the iframe form has been submitted
function awReceiveMessage(event) {
// set variable to url that the message is coming from
var origin = event.origin;
// check if the message is coming from Polk
if (origin !== 'https://iframe.domain') {
//stop function if it is not coming from Polk
return;
} else {
// instantiating the GTM datalayer variable
var dataLayer = window.dataLayer || (window.dataLayer = []);
// if the message is formSubmit push the formSubmit event to the GTM datalayer
if (event.data.event === 'formSubmit') {
dataLayer.push({
'event': 'formSubmit'
});
}
}
}
// run awReceiveMessage() if a message is sent from the iframe to the parent
window.addEventListener('message', awReceiveMessage, false);
The above code is working and firing a GTM tag correctly on the parent page when the form is submitted in the iframe.
You need to check you have received the correct message.
function receiveMessage(event) {
if (event.origin !== 'https://iframe.domain') {
return;
} else if (event.data.event && event.data.event === 'submit') {
console.log('Submitted!');
}
}
window.addEventListener('message', receiveMessage, false);
I find it odd you are getting so many messages and I would suggest adding some code to dump them to the console to see what they are.
window.addEventListener('message', (event) => console.log(event), false);
I am opening a popup window and attaching an onbeforeunload event to it like this:
win = window.open("http://www.google.com", "", "width=300px,height=300px");
win.onbeforeunload = function() {
//do your stuff here
alert("Closed");
};
If I leave the URL empty, the new popup opens with "about:blank" as the address but when I close it, I see the alert.
If I open in as you see it (with an external URL), once it's closed, I cannot see the alert anymore. Any idea why this is happening?
As mentioned, same origin policy prevents Javascript from detecting such events. But there's a quite simple solution which allows you to detect closure of such windows.
Here's the JS code:
var openDialog = function(uri, name, options, closeCallback) {
var win = window.open(uri, name, options);
var interval = window.setInterval(function() {
try {
if (win == null || win.closed) {
window.clearInterval(interval);
closeCallback(win);
}
}
catch (e) {
}
}, 1000);
return win;
};
What it does: it creates new window with provided parameters and then sets the checker function with 1s interval. The function then checks if the window object is present and has its closed property set to false. If either ot these is not true, this means, that the window is (probably) closed and we should fire the 'closeCallback function' callback.
This function should work with all modern browsers. Some time ago Opera caused errors when checking properties from windows on other domains - thus the try..catch block. But I've tested it now and it seems it works quite ok.
We used this technique to create 'facebook-style' login popups for sites which doesn't support them via SDK (ehem... Twitter... ehem). This required a little bit of extra work - we couldn't get any message from Twitter itself, but the Oauth redireced us back to our domain, and then we were able to put some data in popup window object which were accessible from the opener. Then in the close callback function we parsed those data and presented the actual results.
One drawback of this method is that the callback is invoked AFTER the window has been closed. Well, this is the best I was able to achieve with cross domain policies in place.
You could listen to the 'focus' event of the opener window which fires when the user closes the popup.
Unfortunately, you're trying to communicate across domains which is prohibited by JavaScript's same origin policy. You'd have to use a server-side proxy or some other ugly hack to get around it.
You could try creating a page on your site that loads the external website in an iframe. You could then pop open that page and listen for it to unload.
I combined #ThomasZ's answer with this one to set an interval limit (didn't want to use setTimeout).
Example (in Typescript, declared anonymously so as not lose reference to "this"):
private _callMethodWithInterval = (url: string, callback: function, delay: number, repetitions: number) => {
const newWindow = window.open(url, "WIndowName", null, true);
let x = 0;
let intervalID = window.setInterval(() => {
//stops interval if newWindow closed or doesn't exist
try {
if (newWindow == null || newWindow.closed) {
console.info("window closed - interval cleared")
callback();
window.clearInterval(intervalID);
}
}
catch (e) {
console.error(`newWindow never closed or null - ${e}`)
}
//stops interval after number of intervals
if (++x === repetitions) {
console.info("max intervals reached - interval cleared")
window.clearInterval(intervalID);
}
}, delay)
}//end _callMethodWithInterval