ajax

What's the best way for the server to send messages to a web client?

Links to articles would also be appreciated--I don't know the terminology to search for. I'm looking to learn how a web application can allow for server-to-client communications. I know the web was not designed for this and that it has been something of a hurdle, and am just wondering what the state of this is, and what the best practic...

I need some guidance on payment gateways

I've never done anything with payment gateways, can anybody give me suggestions? ...

Prototype Ajax update

I am using AJAX and Prototype. In my code, I need to update the contents of a div. My div: <div id="update"> 1. Content_1 </div> My code: Element.update($("update"),"2.Content_2"); Expected output: <div id="update"> 1.Content_1 2.Content_2 </div> How can I do this in AJAX and Prototype? ...

Ajax Cross Domain Calls

Can we make Ajax request to a different instance of server(different port) running on the same machine ...

A question about cross-domain (subdomain) ajax request.

Let's say I have the main page loaded from http://www.example.com/index.html. On that page there is js code that makes an ajax request to http://n1.example.com//echo?message=hello. When the response is received a div on the main page is updated with the response body. Will that work on all popular browsers? Edit: The obvious solution ...

Cache AJAX requests

I am sending AJAX GET-requests to a PHP application and would like to cache the request returns for later use. Since I am using GET this should be possible because different requests request different URLs (e.g. getHTML.php?page=2 and getHTML.php?page=5). What headers do I need to declare in the PHP-application to make the clients brow...

Jquery encompas AJAX? Thoughts?

With .NET 4.0 on the horizon will MS AJAX still have a place or do you think JQuery will expand to to include the full functionality of AJAX and make, MS AJAX as we know it redundant? ...

AJAX ScriptManager in UserControl

I have a UserControl that contains an UpdatePanel which wraps some other controls. The UserControl will be used on some pages that already have a ScriptManager and other pages that do not have a ScriptManager. I'd like the UserControl to automatically bring its own ScriptManager if one does not exist. I have tried ScriptManager.GetCurre...

Ajax call not responding on repeated request

I have a page with a dropdown. The onchange event calls a Javascript function (below) that includes an Ajax block that retrieves data and populates a TEXTAREA. On the surface, everything works. I can select any item in the list with no problems. However, if I select an item that has previously been selected, the Ajax call appears to ...

Best practices for handling a web service failure

In an Ajax web app, what do you do when a web service call from the browser to your server fails? Automatically retry, hoping it was an intermittent network failure or server error. (But when you have a real server issue, you may face further problems due to a multiplication of traffic from retries.) Fail, and show a message to the us...

Securing AJAX Requests via GUID

I'm writing a web app that will be making requests via AJAX and would like to lock down those calls. After a little research, I am considering using some form of random token (string) to be passed back along with the request (GUID?). Here's the important parts of my algorithm: Assign a token to a JavaScript variable (generated server...

Upload progress using pure PHP/AJAX?

I'm sure this has been asked before, but as I can't seem to find a good answer, here I am, asking... again. :) Is there any way, using only a mixture of HTML, JavaScript/AJAX, and PHP, to report the actual progress of a file upload? In reply to anyone suggesting SWFUpload or similar: I know all about it. Been down that road. I'm looki...

Jquery: Jquery not working in onunload event

Hi, I am trying to send an ajax request in the onunload event of a page. I am using the $.post function of jquery, but when the event actually fires i get this error: "Microsoft JScript runtime error: '$' is undefined" Does this mean that the jquery library has been deferenced before the $.post function was called and so i will not lon...

I have to integrate an existing asp.net web app into another page by using jquery's load() method...

I'm a bit stumped... I have to integrate an existing, simple asp.net web forms app including postbacks etc. into another external site with a jquery load() call., an app that was intended to be integrated through an iframe. I doubt that's possible without a rewrite of the app. The app is a basic questionnaire that leads the user to a p...

What is the highest possible z-index?

I couldn't find that in the specs. I am using lot of of 3rd party javascript and want to make sure that certain piece appears on top of everything else. ...

Button in update panel is doing a full postback?

I'm following a simple example of how to use the update panel from here (http://www.asp.net/Ajax/Documentation/Live/tutorials/IntroductionUpdatePanel.aspx). Outside the update panel i've another html input control which calls a javascript function which displays an count to the user in an alert box. simple stuff. My problem is that the ...

jQuery: What to do with the list that sortable('serialize') returns?

With jQuery I'm retrieving positions of a sortable list using 'serialize', like this: var order = $('ul').sortable('serialize'); The variable 'order' then receives the following: id[]=2&id[]=3&id[]=1&id[]=4&id[]=5 Now how can I use this data in an ajax call? This is how I plan to do it, but it's ugly and I can't change the parameter...

How do I process a complex graphical UI element in a django form?

I have a few complex GUI elements (like a custom calendar with many days that can be highlighted) that appear along with standard django form input fields. I want to process the data I/O from these complex forms along with the Django forms. Previously I would use AJAX requests to process these custom GUI elements on my HTML form after ...

I need to build a very light weight Ajax Engine using C# and ASP.Net. What do you suggest?

I have before created a quick Ajax Framework for one of my projects. It was an ASP.Net Website (C#). There was not a lot of Ajax type functions so I just made a new Page with nothing in it and in the code behind file I put some code in the Page_Load method which would look for an action in the request and then call the appropriate method...

Tracking a page in an Ajax Popover from Google Analytics

I am looking to track a Pop-Over page that appears when the forum is submitted at: http://www.xebra.com/salesAssistance.html I tried adding the urchin/google analytics code to the page that is displayed in the pop-over window, but whenever I do so the status bar displays "Read http://www.google-analytics.com/" and the entire form page...