I think it's another option, though I don't need to delete single
requests :)
I'm just wondering why the devs don't accept happily all the
patches... Your bug was submitted months ago; my patch has not been
considered even... I tought I could do something useful for everyone,
but evidently I'm mistaken.
Maybe it's because this is the first time I submit a patch to an open
source project so I don't have any experience, but I thought that,
since open source means collaborative, all the new ideas are welcome,
aren't they?
On 14 Nov, 04:54, kuralj <[EMAIL PROTECTED]> wrote:
> Isn't it just a matter of storing the $.ajax object for your request/s
> then using abort() on any that you want to cancel?
>
> eg. (in a simplified example)
>
> var ajax = {
> xhr: null,
> send: function() {
> if (ajax.xhr) ajax.xhr.abort();
> ajax.xhr = $.ajax({...});
> }
>
> };
>
> ajax.send();
>
> Extending on that - if you want to manage and cancel a 'collection /
> group / all' running xhr requests, then instead of storing the $.ajax
> in a single variable, you'd store it in an array or object (eg. xhr
> ['...'] = $.ajax() etc), and then loop over them to cancel each.
>
> I have used this approach on two web apps that are very similar in
> requirements / user interaction to what you've described.
>
> *** NOTE ***
>
> The above code will cause uncleared timeouts and increased CPU usage
> with every aborted request in the current version of jQuery because of
> a bug in jQuery that I lodged a ticket for 6 months
> ago:http://dev.jquery.com/ticket/2935
>
> Jörn submitted a patch 5 months ago, but there hasn't been an update
> to jQuery, so I'm hoping that it'll be added to the next release.
>
> In the meantime, if you implement the patch you'll be able to use abort
> () properly until it gets fixed in the core.
>
> While we're on the subject, is it possible to get an update on the
> status of that ticket?
>
> Ian
>
> On Nov 13, 5:48 am, Ego-Ale-Sum <[EMAIL PROTECTED]> wrote:
>
> > Uhm....
> > I'm not sure I do understand the code: it's not documented at all.
> > Anyways, seems like it's a queue system: requests are not in parallel,
> > but executed once at time. So, it's different from my code!
>
> > On 12 Nov, 20:35, "Jörn Zaefferer" <[EMAIL PROTECTED]>
> > wrote:
>
> > > The release there is quite different from the version in svn, which
> > > may be closer to what you are looking
> > > for:http://dev.jquery.com/browser/trunk/plugins/ajaxQueue/jquery.ajaxQueu...
> > > The docs are all wrong, but the usage is really simple:
>
> > > No ports:
>
> > > $.ajax({
> > > mode: "abort"
>
> > > });
>
> > > With ports:
>
> > > $.ajax({
> > > mode: "abort",
> > > port: "autocomplete"
>
> > > });
>
> > > Ports are useful when you don't want to cancel everything, but only a
> > > certain type of request, like those for a autocomplete component.
>
> > > Jörn
>
> > > On Wed, Nov 12, 2008 at 8:20 PM, John Resig <[EMAIL PROTECTED]> wrote:
>
> > > > Really quickly - I was wondering if this Ajax Queue plugin helped you
> > > > at all (or if you saw it):
> > > >http://plugins.jquery.com/project/ajaxqueue
>
> > > > We worked on that one last year - just wondering if it helps you at
> > > > all, before we look at other solutions.
>
> > > > --John
>
> > > > On Wed, Nov 12, 2008 at 11:49 AM, Ego-Ale-Sum <[EMAIL PROTECTED]> wrote:
>
> > > >> In my website, I'm using jQuery to handle XHR requests (using the
> > > >> methods $.post, $.get, $.getScript and even the AJAX form plugin).
> > > >> I wanted XHR requests to stop if new ones are made.
> > > >> I've found a plugin named "AJAX Manager" (or something similar) for
> > > >> that, but it was not what I was looking for: first, it supports just
> > > >> $.get requests and it keeps all the active requests in a sort of
> > > >> queue.
>
> > > >> I needed something that stopped all the previous XHR requests when a
> > > >> new one is made.
> > > >> I thought the best way to accomplish that was simply not to trigger
> > > >> the callback after the request completes.
>
> > > >> I looked inside the jQuery library and I found that the problem could
> > > >> not be solved with a plugin (I needed to edit the $.ajax method
> > > >> directly).
> > > >> So, I've realized a simple but powerful patch.
>
> > > >> I'm posting the patch here: I hope it will be useful.
> > > >> Also, since I think it's a quite useful addition, I'm asking the
> > > >> developers wheter they could add it to the trunk.
>
> > > >> Here's the patch (from my SVN repository):
>
> > > >> Index: jquery.js
> > > >> ===================================================================
> > > >> --- jquery.js (revision 188)
> > > >> +++ jquery.js (revision 190)
> > > >> @@ -2512,6 +2512,9 @@
> > > >> var jsc = now();
>
> > > >> jQuery.extend({
> > > >> + // The current request
> > > >> + ajaxRequestId: 0,
> > > >> +
> > > >> get: function( url, data, callback, type ) {
> > > >> // shift arguments if data argument was ommited
> > > >> if ( jQuery.isFunction( data ) ) {
> > > >> @@ -2564,6 +2567,8 @@
> > > >> processData: true,
> > > >> async: true,
> > > >> data: null,
> > > >> + newRequestAbort: false,
> > > >> + requestId: 0,
> > > >> username: null,
> > > >> password: null,
> > > >> accepts: {
> > > >> @@ -2586,6 +2591,10 @@
>
> > > >> var jsonp, jsre = /=\?(&|$)/g, status, data,
> > > >> type = s.type.toUpperCase();
> > > >> +
> > > >> + // increment the request counter
> > > >> + jQuery.ajaxRequestId++;
> > > >> + s.requestId = jQuery.ajaxRequestId;
>
> > > >> // convert data if not already a string
> > > >> if ( s.data && s.processData && typeof s.data !=
> > > >> "string" )
> > > >> @@ -2813,9 +2822,12 @@
> > > >> onreadystatechange();
>
> > > >> function success(){
> > > >> - // If a local callback was specified, fire it
> > > >> and pass it the data
> > > >> - if ( s.success )
> > > >> - s.success( data, status );
> > > >> + if(!s.newRequestAbort || s.requestId ==
> > > >> jQuery.ajaxRequestId)
> > > >> + {
> > > >> + // If a local callback was specified,
> > > >> fire it and pass it the
> > > >> data
> > > >> + if ( s.success )
> > > >> + s.success( data, status );
> > > >> + }
>
> > > >> // Fire the global callback
> > > >> if ( s.global )
> > > >> @@ -2842,7 +2854,7 @@
>
> > > >> handleError: function( s, xhr, status, e ) {
> > > >> // If a local callback was specified, fire it
> > > >> - if ( s.error ) s.error( xhr, status, e );
> > > >> + if ( s.error && (!s.newRequestAbort || s.requestId ==
> > > >> jQuery.ajaxRequestId) ) s.error( xhr, status, e );
>
> > > >> // Fire the global callback
> > > >> if ( s.global )
>
> > > >> Here's a test file
>
> > > >> <?php
> > > >> if(!empty($_GET['ajax']))
> > > >> {
> > > >> sleep(3);
> > > >> echo "Received ".$_GET['ajax'];
> > > >> exit;
> > > >> }
> > > >> ?>
> > > >> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://
> > > >>www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
> > > >> <html xmlns="http://www.w3.org/1999/xhtml";>
> > > >> <head>
> > > >> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
> > > >> <title>Untitled Document</title>
> > > >> <script type="text/javascript" src="app/clientscript/jquery.js"></
> > > >> script>
> > > >> <script type="text/javascript">
> > > >> //<!--
> > > >> var id = 0;
> > > >> function theCallback(data)
> > > >> {
> > > >> $("#result").append(data+"<br/>");
> > > >> }
>
> > > >> function doRequest(abort)
> > > >> {
> > > >> id++;
> > > >> if(!abort)
> > > >> {
> > > >> $.ajaxSetup({newRequestAbort: false});
> > > >> }
> > > >> else
> > > >> {
> > > >> $.ajaxSetup({newRequestAbort: true});
> > > >> }
> > > >> $.get("test.php", {ajax: id}, theCallback);
> > > >> }
> > > >> //-->
> > > >> </script>
> > > >> </head>
> > > >> <body>
> > > >> <a href="javascript:doRequest(true)">do request that aborts on new
> > > >> request</a><br />
> > > >> <a href="javascript:doRequest(false)">do request that does NOT abort
> > > >> on new requests</a>
> > > >> <div id="result"></div>
> > > >> </body>
> > > >> </html>
>
> > > >> I hope my work can help many other users that every day choose this
> > > >> fantastic javascript framework.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"jQuery Development" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/jquery-dev?hl=en
-~----------~----~----~----~------~----~------~--~---
