JQuery ajax cleanup code before closing page
up vote
1
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Before closing/navigating away from my web page I need to call a 'cleanup code' function using jQuery AJAX. If, and only if, the clean up code fails, I want to display an alert and prevent closing/navigation. Otherwise the page should close successfully without any confirmation dialog.
I called my cleanup AJAX in an onbeforeunload event handler, and omitted the return statement from the handler to prevent the confirmation dialog. The cleanup works, but now I can't alert to the user in case of clean up failure!
Any suggestions on how to alert to the user on failure and prevent closing, please?
window.onbeforeunload = function(e) {
MyCleanUpCode();
};
javascript jquery onbeforeunload
edited Nov 11 at 11:52
Rory McCrossan
239k29203244
asked Nov 11 at 11:25
Nina
3910
|
show 4 more comments
up vote
1
down vote
favorite
Before closing/navigating away from my web page I need to call a 'cleanup code' function using jQuery AJAX. If, and only if, the clean up code fails, I want to display an alert and prevent closing/navigation. Otherwise the page should close successfully without any confirmation dialog.
I called my cleanup AJAX in an onbeforeunload event handler, and omitted the return statement from the handler to prevent the confirmation dialog. The cleanup works, but now I can't alert to the user in case of clean up failure!
Any suggestions on how to alert to the user on failure and prevent closing, please?
window.onbeforeunload = function(e) {
MyCleanUpCode();
};
javascript jquery onbeforeunload
edited Nov 11 at 11:52
Rory McCrossan
239k29203244
asked Nov 11 at 11:25
Nina
3910
1
That sequence is not possible withinbeforeunload. You must determine synchronously whether to show the prompt or not
– charlietfl
Nov 11 at 11:31
1
Suggest you reconsider approach and do cleanup on periodic interval and use some sort ofdirtyflag when user changes something in between cleanups and use that flag to show unload prompt. Also you can not use analert()inside that event handler
– charlietfl
Nov 11 at 11:39
1
Not really. Your choices are show the prompt or not and that is about all you can control. If the ajax is critical you need to take care of it before user tries to leave
– charlietfl
Nov 11 at 11:49
2
I know that's what you would like but it is just not that simple. What if users browser crashes or they lose power? That event and ajax would never even occur.
– charlietfl
Nov 11 at 11:57
1
Safest approach is do server updates or localStorage updates for every change user makes then there is no cleanup needed
– charlietfl
Nov 11 at 12:00
|
show 4 more comments
up vote
1
down vote
favorite
up vote
1
down vote
favorite
Before closing/navigating away from my web page I need to call a 'cleanup code' function using jQuery AJAX. If, and only if, the clean up code fails, I want to display an alert and prevent closing/navigation. Otherwise the page should close successfully without any confirmation dialog.
I called my cleanup AJAX in an onbeforeunload event handler, and omitted the return statement from the handler to prevent the confirmation dialog. The cleanup works, but now I can't alert to the user in case of clean up failure!
Any suggestions on how to alert to the user on failure and prevent closing, please?
window.onbeforeunload = function(e) {
MyCleanUpCode();
};
javascript jquery onbeforeunload
edited Nov 11 at 11:52
Rory McCrossan
239k29203244
asked Nov 11 at 11:25
Nina
3910
Before closing/navigating away from my web page I need to call a 'cleanup code' function using jQuery AJAX. If, and only if, the clean up code fails, I want to display an alert and prevent closing/navigation. Otherwise the page should close successfully without any confirmation dialog.
I called my cleanup AJAX in an onbeforeunload event handler, and omitted the return statement from the handler to prevent the confirmation dialog. The cleanup works, but now I can't alert to the user in case of clean up failure!
Any suggestions on how to alert to the user on failure and prevent closing, please?
window.onbeforeunload = function(e) {
MyCleanUpCode();
};
javascript jquery onbeforeunload
javascript jquery onbeforeunload
edited Nov 11 at 11:52
Rory McCrossan
239k29203244
asked Nov 11 at 11:25
Nina
3910
edited Nov 11 at 11:52
Rory McCrossan
239k29203244
asked Nov 11 at 11:25
Nina
3910
edited Nov 11 at 11:52
Rory McCrossan
239k29203244
edited Nov 11 at 11:52
Rory McCrossan
239k29203244
edited Nov 11 at 11:52
Rory McCrossan
239k29203244
239k29203244
asked Nov 11 at 11:25
Nina
3910
asked Nov 11 at 11:25
Nina
3910
asked Nov 11 at 11:25
Nina
3910
3910
1
That sequence is not possible withinbeforeunload. You must determine synchronously whether to show the prompt or not
– charlietfl
Nov 11 at 11:31
1
Suggest you reconsider approach and do cleanup on periodic interval and use some sort ofdirtyflag when user changes something in between cleanups and use that flag to show unload prompt. Also you can not use analert()inside that event handler
– charlietfl
Nov 11 at 11:39
1
Not really. Your choices are show the prompt or not and that is about all you can control. If the ajax is critical you need to take care of it before user tries to leave
– charlietfl
Nov 11 at 11:49
2
I know that's what you would like but it is just not that simple. What if users browser crashes or they lose power? That event and ajax would never even occur.
– charlietfl
Nov 11 at 11:57
1
Safest approach is do server updates or localStorage updates for every change user makes then there is no cleanup needed
– charlietfl
Nov 11 at 12:00
|
show 4 more comments
1
That sequence is not possible withinbeforeunload. You must determine synchronously whether to show the prompt or not
– charlietfl
Nov 11 at 11:31
1
Suggest you reconsider approach and do cleanup on periodic interval and use some sort ofdirtyflag when user changes something in between cleanups and use that flag to show unload prompt. Also you can not use analert()inside that event handler
– charlietfl
Nov 11 at 11:39
1
Not really. Your choices are show the prompt or not and that is about all you can control. If the ajax is critical you need to take care of it before user tries to leave
– charlietfl
Nov 11 at 11:49
2
I know that's what you would like but it is just not that simple. What if users browser crashes or they lose power? That event and ajax would never even occur.
– charlietfl
Nov 11 at 11:57
1
Safest approach is do server updates or localStorage updates for every change user makes then there is no cleanup needed
– charlietfl
Nov 11 at 12:00
1
1
That sequence is not possible within
beforeunload. You must determine synchronously whether to show the prompt or not– charlietfl
Nov 11 at 11:31
That sequence is not possible within
beforeunload. You must determine synchronously whether to show the prompt or not– charlietfl
Nov 11 at 11:31
1
1
Suggest you reconsider approach and do cleanup on periodic interval and use some sort of
dirty flag when user changes something in between cleanups and use that flag to show unload prompt. Also you can not use an alert() inside that event handler– charlietfl
Nov 11 at 11:39
Suggest you reconsider approach and do cleanup on periodic interval and use some sort of
dirty flag when user changes something in between cleanups and use that flag to show unload prompt. Also you can not use an alert() inside that event handler– charlietfl
Nov 11 at 11:39
1
1
Not really. Your choices are show the prompt or not and that is about all you can control. If the ajax is critical you need to take care of it before user tries to leave
– charlietfl
Nov 11 at 11:49
Not really. Your choices are show the prompt or not and that is about all you can control. If the ajax is critical you need to take care of it before user tries to leave
– charlietfl
Nov 11 at 11:49
2
2
I know that's what you would like but it is just not that simple. What if users browser crashes or they lose power? That event and ajax would never even occur.
– charlietfl
Nov 11 at 11:57
I know that's what you would like but it is just not that simple. What if users browser crashes or they lose power? That event and ajax would never even occur.
– charlietfl
Nov 11 at 11:57
1
1
Safest approach is do server updates or localStorage updates for every change user makes then there is no cleanup needed
– charlietfl
Nov 11 at 12:00
Safest approach is do server updates or localStorage updates for every change user makes then there is no cleanup needed
– charlietfl
Nov 11 at 12:00
|
show 4 more comments
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1
That sequence is not possible within
beforeunload. You must determine synchronously whether to show the prompt or not– charlietfl
Nov 11 at 11:31
1
Suggest you reconsider approach and do cleanup on periodic interval and use some sort of
dirtyflag when user changes something in between cleanups and use that flag to show unload prompt. Also you can not use analert()inside that event handler– charlietfl
Nov 11 at 11:39
1
Not really. Your choices are show the prompt or not and that is about all you can control. If the ajax is critical you need to take care of it before user tries to leave
– charlietfl
Nov 11 at 11:49
2
I know that's what you would like but it is just not that simple. What if users browser crashes or they lose power? That event and ajax would never even occur.
– charlietfl
Nov 11 at 11:57
1
Safest approach is do server updates or localStorage updates for every change user makes then there is no cleanup needed
– charlietfl
Nov 11 at 12:00