ok, I have seen many, many articles about this. But so far I have not got any to work. So this is my take on the issue.
I have a list of employee names with ids held in a select option, and a button that when clicked, calls a routine for each option in the select
$(document).on("click", ".js-button-update-all-drivers", function (e) {
e.preventDefault();
myApplication.busy(true);
$("#modalInfo-body span").text("Starting update ...........");
$('.modalInfo-header .title').text("Information");
var modal = document.getElementById('modalInfo');
myApplication.openModal(modal);
var selected = document.getElementsByClassName('js-dropdown-selector');
for (var i = 0; i < selected[0].options.length; i++) {
var Id = selected[0].options[i].value;
$("#modalInfo-body span").text("Updating - " + Id);
doWork(Id);
}
myApplication.closeModal(modal);
myApplication.busy(false);
});
This calls a function call doWork which is defined as async/wait
async function doWork(employeeId, taxWeek, taxYear) {
try {
const response = await processUpdate(Id);
} catch (err) {
$("#modalInfo-body span").text("Report Error - Thank you.");
}
}
Which in turn calls the following function:
function processUpdate(Id) {
return new Promise((resolve, reject) => {
$.ajax({
url: '/myTest',
async: false,
data: {
Id: Id
},
method: 'post',
dataType: 'json',
success: function(retData) {
if (retData === false) {
resolve('Completed');
} else {
reject('An error has occurred, please send a screen shot');
}
},
error: function(xhr, error) {
reject('An error has occurred, please send a screen shot'); }
});
});
}
Although this code works, the element $("#modalInfo-body span") is not updated as it loops around the doWork function.
I already have a spinner on the screen, but am looking for a more visual aid to how this is progressing.
OK, I am going to start this by saying that I knew the browser is single threaded, and this was not going to be easy.
I did try callbacks and that did not work completely, as I encountered a delay in updating the screen.
So ultimately, I replaced this with a simple spinner.
Thanks to all that took the timer to look at this.
I want to capture the browser window/tab close event.
I have tried the following with jQuery:
jQuery(window).bind(
"beforeunload",
function() {
return confirm("Do you really want to close?")
}
)
But it works on form submission as well, which is not what I want. I want an event that triggers only when the user closes the window.
The beforeunload event fires whenever the user leaves your page for any reason.
For example, it will be fired if the user submits a form, clicks a link, closes the window (or tab), or goes to a new page using the address bar, search box, or a bookmark.
You could exclude form submissions and hyperlinks (except from other frames) with the following code:
var inFormOrLink;
$('a').on('click', function() { inFormOrLink = true; });
$('form').on('submit', function() { inFormOrLink = true; });
$(window).on("beforeunload", function() {
return inFormOrLink ? "Do you really want to close?" : null;
})
For jQuery versions older than 1.7, try this:
var inFormOrLink;
$('a').live('click', function() { inFormOrLink = true; });
$('form').bind('submit', function() { inFormOrLink = true; });
$(window).bind("beforeunload", function() {
return inFormOrLink ? "Do you really want to close?" : null;
})
The live method doesn't work with the submit event, so if you add a new form, you'll need to bind the handler to it as well.
Note that if a different event handler cancels the submit or navigation, you will lose the confirmation prompt if the window is actually closed later. You could fix that by recording the time in the submit and click events, and checking if the beforeunload happens more than a couple of seconds later.
Maybe just unbind the beforeunload event handler within the form's submit event handler:
jQuery('form').submit(function() {
jQuery(window).unbind("beforeunload");
...
});
For a cross-browser solution (tested in Chrome 21, IE9, FF15), consider using the following code, which is a slightly tweaked version of Slaks' code:
var inFormOrLink;
$('a').live('click', function() { inFormOrLink = true; });
$('form').bind('submit', function() { inFormOrLink = true; });
$(window).bind('beforeunload', function(eventObject) {
var returnValue = undefined;
if (! inFormOrLink) {
returnValue = "Do you really want to close?";
}
eventObject.returnValue = returnValue;
return returnValue;
});
Note that since Firefox 4, the message "Do you really want to close?" is not displayed. FF just displays a generic message. See note in https://developer.mozilla.org/en-US/docs/DOM/window.onbeforeunload
window.onbeforeunload = function () {
return "Do you really want to close?";
};
My answer is aimed at providing simple benchmarks.
HOW TO
See #SLaks answer.
$(window).on("beforeunload", function() {
return inFormOrLink ? "Do you really want to close?" : null;
})
How long does the browser take to finally shut your page down?
Whenever an user closes the page (x button or CTRL + W), the browser executes the given beforeunload code, but not indefinitely. The only exception is the confirmation box (return 'Do you really want to close?) which will wait until for the user's response.
Chrome: 2 seconds.
Firefox: ∞ (or double click, or force on close)
Edge: ∞ (or double click)
Explorer 11: 0 seconds.
Safari: TODO
What we used to test this out:
A Node.js Express server with requests log
The following short HTML file
What it does is to send as many requests as it can before the browser shut downs its page (synchronously).
<html>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script>
function request() {
return $.ajax({
type: "GET",
url: "http://localhost:3030/" + Date.now(),
async: true
}).responseText;
}
window.onbeforeunload = () => {
while (true) {
request();
}
return null;
}
</script>
</body>
</html>
Chrome output:
GET /1480451321041 404 0.389 ms - 32
GET /1480451321052 404 0.219 ms - 32
...
GET /hello/1480451322998 404 0.328 ms - 32
1957ms ≈ 2 seconds // we assume it's 2 seconds since requests can take few milliseconds to be sent.
For a solution that worked well with third party controls like Telerik (ex.: RadComboBox) and DevExpress that use the Anchor tags for various reasons, consider using the following code, which is a slightly tweaked version of desm's code with a better selector for self targeting anchor tags:
var inFormOrLink;
$('a[href]:not([target]), a[href][target=_self]').live('click', function() { inFormOrLink = true; });
$('form').bind('submit', function() { inFormOrLink = true; });
$(window).bind('beforeunload', function(eventObject) {
var returnValue = undefined;
if (! inFormOrLink) {
returnValue = "Do you really want to close?";
}
eventObject.returnValue = returnValue;
return returnValue;
});
I used Slaks answer but that wasn't working as is, since the onbeforeunload returnValue is parsed as a string and then displayed in the confirmations box of the browser. So the value true was displayed, like "true".
Just using return worked.
Here is my code
var preventUnloadPrompt;
var messageBeforeUnload = "my message here - Are you sure you want to leave this page?";
//var redirectAfterPrompt = "http://www.google.co.in";
$('a').live('click', function() { preventUnloadPrompt = true; });
$('form').live('submit', function() { preventUnloadPrompt = true; });
$(window).bind("beforeunload", function(e) {
var rval;
if(preventUnloadPrompt) {
return;
} else {
//location.replace(redirectAfterPrompt);
return messageBeforeUnload;
}
return rval;
})
Perhaps you could handle OnSubmit and set a flag that you later check in your OnBeforeUnload handler.
Unfortunately, whether it is a reload, new page redirect, or browser close the event will be triggered. An alternative is catch the id triggering the event and if it is form dont trigger any function and if it is not the id of the form then do what you want to do when the page closes. I am not sure if that is also possible directly and is tedious.
You can do some small things before the customer closes the tab. javascript detect browser close tab/close browser but if your list of actions are big and the tab closes before it is finished you are helpless. You can try it but with my experience donot depend on it.
window.addEventListener("beforeunload", function (e) {
var confirmationMessage = "\o/";
/* Do you small action code here */
(e || window.event).returnValue = confirmationMessage; //Gecko + IE
return confirmationMessage; //Webkit, Safari, Chrome
});
https://developer.mozilla.org/en-US/docs/Web/Reference/Events/beforeunload?redirectlocale=en-US&redirectslug=DOM/Mozilla_event_reference/beforeunload
jQuery(window).bind("beforeunload", function (e) {
var activeElementTagName = e.target.activeElement.tagName;
if (activeElementTagName != "A" && activeElementTagName != "INPUT") {
return "Do you really want to close?";
}
})
If your form submission takes them to another page (as I assume it does, hence the triggering of beforeunload), you could try to change your form submission to an ajax call. This way, they won't leave your page when they submit the form and you can use your beforeunload binding code as you wish.
As of jQuery 1.7, the .live() method is deprecated. Use .on() to attach event handlers. Users of older versions of jQuery should use .delegate() in preference to .live()
$(window).bind("beforeunload", function() {
return true || confirm("Do you really want to close?");
});
on complete or link
$(window).unbind();
Try this also
window.onbeforeunload = function ()
{
if (pasteEditorChange) {
var btn = confirm('Do You Want to Save the Changess?');
if(btn === true ){
SavetoEdit();//your function call
}
else{
windowClose();//your function call
}
} else {
windowClose();//your function call
}
};
My Issue: The 'onbeforeunload' event would only be triggered if there were odd number of submits(clicks). I had a combination of solutions from similar threads in SO to have my solution work. well my code will speak.
<!--The definition of event and initializing the trigger flag--->
$(document).ready(function() {
updatefgallowPrompt(true);
window.onbeforeunload = WarnUser;
}
function WarnUser() {
var allowPrompt = getfgallowPrompt();
if(allowPrompt) {
saveIndexedDataAlert();
return null;
} else {
updatefgallowPrompt(true);
event.stopPropagation
}
}
<!--The method responsible for deciding weather the unload event is triggered from submit or not--->
function saveIndexedDataAlert() {
var allowPrompt = getfgallowPrompt();
var lenIndexedDocs = parseInt($('#sortable3 > li').size()) + parseInt($('#sortable3 > ul').size());
if(allowPrompt && $.trim(lenIndexedDocs) > 0) {
event.returnValue = "Your message";
} else {
event.returnValue = " ";
updatefgallowPrompt(true);
}
}
<!---Function responsible to reset the trigger flag---->
$(document).click(function(event) {
$('a').live('click', function() { updatefgallowPrompt(false); });
});
<!--getter and setter for the flag---->
function updatefgallowPrompt (allowPrompt){ //exit msg dfds
$('body').data('allowPrompt', allowPrompt);
}
function getfgallowPrompt(){
return $('body').data('allowPrompt');
}
Just verify...
function wopen_close(){
var w = window.open($url, '_blank', 'width=600, height=400, scrollbars=no, status=no, resizable=no, screenx=0, screeny=0');
w.onunload = function(){
if (window.closed) {
alert("window closed");
}else{
alert("just refreshed");
}
}
}
var validNavigation = false;
jQuery(document).ready(function () {
wireUpEvents();
});
function endSession() {
// Browser or broswer tab is closed
// Do sth here ...
alert("bye");
}
function wireUpEvents() {
/*
* For a list of events that triggers onbeforeunload on IE
* check http://msdn.microsoft.com/en-us/library/ms536907(VS.85).aspx
*/
window.onbeforeunload = function () {
debugger
if (!validNavigation) {
endSession();
}
}
// Attach the event keypress to exclude the F5 refresh
$(document).bind('keypress', function (e) {
debugger
if (e.keyCode == 116) {
validNavigation = true;
}
});
// Attach the event click for all links in the page
$("a").bind("click", function () {
debugger
validNavigation = true;
});
// Attach the event submit for all forms in the page
$("form").bind("submit", function () {
debugger
validNavigation = true;
});
// Attach the event click for all inputs in the page
$("input[type=submit]").bind("click", function () {
debugger
validNavigation = true;
});
}`enter code here`
Following worked for me;
$(window).unload(function(event) {
if(event.clientY < 0) {
//do whatever you want when closing the window..
}
});
i need following function to be execute in Firefox.., but it is working fine in chrome. the problem was when i do 'Inspect Element With Firebug' it is working fine. the method 'EditEncounterBillStatus' is also hitting correctly. but when i don't use 'Inspect Element With Firebug' the method EditEncounterBillStatus is not hitting.. i tried a lot to sort out this. but still i can't can any one help me to find solution thanks in advance.
else if (element.trim() == "Approved") {
var TestPin = prompt("Please Enter your PIN");
if (TestPin != null) {
if (isNaN(TestPin)) {
alert("Please Enter a Valid Pin");
return;
}
else if (TestPin == pin) {
var postVisitData = { VisitId: vid};
$.post("/Emr/WaitingRoom/EditEncounterBillStatus", { VisitId: vid }, function (data) {
});
window.location = "/Emr/Patients/Show?PID=" + pid;
}
else {
alert("Your Entered PIN Is Incorrect");
}
}
else {
return;
}
}
I would recommend doing it like this
else if (TestPin == pin) {
$.post("/Emr/WaitingRoom/EditEncounterBillStatus", { VisitId: vid }, function (data) {
window.location = "/Emr/Patients/Show?PID=" + pid;
});
return; // in case of side effects in unseen code
}
i.e. wait until the $.post has finished before changing the window.location
As the rest of your code is unseen there could be side effects of performing this in this way - hence the return where it is - but even then, not knowing the full call stack there could still be side effects - you have been warned
You should change location upon the success of the post call, so put that in your callback function body:
$.post("/Emr/WaitingRoom/EditEncounterBillStatus", { VisitId: vid },
function (data) {
window.location = "/Emr/Patients/Show?PID=" + pid;
});
This way you are sure you only change location when the post action was executed. Otherwise you risk that you change location before the post happens. In debug mode, and certainly when you step through the code, there is enough time for the post to finish in time, and so your original code then works.
Why would my jquery/javascript be buggy?
(using foundation 4.3.2 with Jquery 1.10.2)
Firefox always gives a message to stop the script:
"A script on this page may be busy, or it may have stopped responding..."
Here is the function that gives the problems
function preparePlz() {
$('#plzform').on("submit", function (event) {
event.preventDefault();
var plzVal = $('#plz').val();
var regex = new RegExp("^([0-9]{5})$");
if (!regex.test(plzVal)) {
$('.errormessage').addClass("error");
if ($('.errormessage').hasClass("hide")) {
$('.errormessage').removeClass("hide");
}
$("#plz ").addClass("error");
}
else if(regex.test(plzVal)) {
$('.errormessage').addClass("hide");
$('.errormessage').removeClass("error");
$('#plz').removeClass("error");
$('#message').removeClass("hide");
var plzZone = plzVal.substring(0, 2);
$('#plzModal').foundation('reveal', 'open', {
url: 'http://vaeplan.com/kontact/zone',
data: {showtemplate: false, r: plzZone}
});
}
});
preparePlz();
}
$(document).ready(function () {
preparePlz();
});
You have infinite recursion. Think about it, what happens on document ready? preparePlz is called. What happens inside preparePlz? preparePlz is called. What happens inside preparePlz? preparePlz is called.
The last thing function preparePlz does is run itself:
preparePlz();
When the page loads preparePlz is run once, then goes into an infinite loop.
Change
});
preparePlz();
}
to
});
}
while testing this code I found it to be working absolutely fine with the firefox browser checked it with firebug but it doesn't work with chrome browser
here is my code :
<script type="text/javascript">
window.onfocus = startCheck;
var dualLogin;
function startCheck() {
dualLogin = setInterval(function () {
checkTable();
}, 20000);
}
function checkTable() {
$.ajax({
url:"<%= url_for :controller => 'xyz',:action => 'abc'%>",
cache:false,
dataType:'json',
success:function (data) {
if (data.status=='dual')
{
logout();
}
}
})
}
window.onblur = stopCheck;
function stopCheck() {
window.clearInterval(dualLogin);
}
function logout(){
alert('you are to be logged out');
window.location.replace("/registeration_page");
}
</script>
can any one help thanks in advance.
I create a jsfiidle.
have a look. click on result box for focus and click on other for blur.