Re: xhr call and changing page

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From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups	comp.lang.javascript
Subject	Re: xhr call and changing page
Date	Mon, 31 Mar 2014 19:23:51 +0200
Organization	PointedEars Software (PES)
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Andrew Poulos wrote:

> When I send some data using AJAX to the server (to save to a db) and
> then immediately navigate to a new page what seems to be happening is
> that no data gets to the db.
> 
> Does changing the page that made the AJAX call cause the call to get
> cancelled?

Obviously, as always (and please don't say “AJAX call”).  You need to avoid 
the race condition by not navigating before you are sure the request has 
been sent; even better, wait until the response has been received.

> I'm trying to track an elearning course. When the user closes the window
> containing the course I have a loop in the parent page that checks for
> the course's window.

A loop?

> If the window cannot be found it updates the server with the "logout" time
> and then navigates to the course selection page.

Also consider listening to events pertaining to navigating away/closing the 
window.

-- 
PointedEars

Twitter: @PointedEars2
Please do not Cc: me. / Bitte keine Kopien per E-Mail.

Thread

xhr call and changing page Andrew Poulos <ap_prog@hotmail.com> - 2014-03-31 12:33 +1100
  Re: xhr call and changing page Denis McMahon <denismfmcmahon@gmail.com> - 2014-03-31 02:35 +0000
  Re: xhr call and changing page Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-03-31 19:23 +0200
  Re: xhr call and changing page Danny <dann90038@gmail.com> - 2014-03-31 11:48 -0700

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