Prevent Users from exiting a course with the browser close button-

I was playing around with JQuery and Lectora and I stumbled on your post. I know JQuery has to be set in Lectora as object type Top of the file Scripting (because of the document.ready bit, so I have it set that way, but the code does not work when published to SCORM. All other javaScript code blocks that I have in the file work. Am I missing a setting?

@J_Cortes 50720 wrote:

So... ever had a user crash the Scorm API by using the browser close button verses exiting the course with the button provided in your course?



The example below makes use of jquery to correct the issue by alerting the user when they attempt to access the browser navigation area- (maximizes the window as well but that only works in Internet Explorer)




$(document).ready(function(){
window.moveTo(0, 0);
window.resizeTo(screen.availWidth, screen.availHeight);
$(document).mousemove(function(location){
if (location.pageY<1){
alert('Please close the course correctlynby using the exit button.');
}
});
});
[/CODE]</p>

First of all, Lectora treats closing course with X just like closing it with Close action. If your LMS doesn't support it, it's a bug and should be addressed by your LMS vendor.

Also, and please don't take this personally, forcing users to NOT do something that is 100% logical, like closing your course in exactly same way they close all other programs, is simply bad UX design. Developers shouldn't solve programming issues by trying to alter user behaviour. Because it still won't work.

Finally, your solution is nowhere near bullet-proof:
1. By your logic, if the user moves mouse above the window, you fire a warning. What if they wanted to minimize the window for a second?
2. Most importantly, your alert will fire only when location.pageY equals zero, because location is not updated when mouse is outside window border (so location is never negative). Since the value of location is updated slower than I can move my mouse, it has a very small chance to hit exactly 0. In most cases, it'll get stuck at 3 or close to that.
I tested it several times.

3. Moving and resizing windows is only allowed for parent windows toward their children windows. So it won't work in any standard-compliant browsers (including the latest IE).

Here are a number of better methods, all using JS unload technique: [url]http://stackoverflow.com/questions/1244535/alert-when-browser-window-closed-accidentally[/url][CODE]

$(document).ready(function(){

window.moveTo(0, 0);

window.resizeTo(screen.availWidth, screen.availHeight);

$(document).mousemove(function(location){

if (location.pageY<1){<br />
alert('Please close the course correctlynby using the exit button.');

}

});

});

[/CODE]

First of all, Lectora treats closing course with X just like closing it with Close action. If your LMS doesn't support it, it's a bug and should be addressed by your LMS vendor.



Also, and please don't take this personally, forcing users to NOT do something that is 100% logical, like closing your course in exactly same way they close all other programs, is simply bad UX design. Developers shouldn't solve programming issues by trying to alter user behaviour. Because it still won't work.



Finally, your solution is nowhere near bullet-proof:

1. By your logic, if the user moves mouse above the window, you fire a warning. What if they wanted to minimize the window for a second?

2. Most importantly, your alert will fire only when location.pageY equals zero, because location is not updated when mouse is outside window border (so location is never negative). Since the value of location is updated slower than I can move my mouse, it has a very small chance to hit exactly 0. In most cases, it'll get stuck at 3 or close to that.

I tested it several times.



3. Moving and resizing windows is only allowed for parent windows toward their children windows. So it won't work in any standard-compliant browsers (including the latest IE).



Here are a number of better methods, all using JS unload technique: http://stackoverflow.com/questions/1244535/alert-when-browser-window-closed-accidentally