ajax

Need to test an ajax timeout condition

As the title mentions, I have a timeout callback handler on an ajax call, and I want to be able to test that condition but nothing is coming to mind immediately on ways I can force my application to hit that state, any suggestions? ...

Suggestions on Ajax development environment for PHP

I am a C/C++ programmer professionally, but I've created a couple of personal web sites using PHP and MySQL. They're pretty basic, and I'd like to jazz them up using Ajax, but I've never done any Ajax. I've done all the development so far manually, i.e. no IDE or anything like that. Does anyone have suggestions on Ajax development envir...

How to set encoding in .getJSON JQuery

In my web app, i submit some form fields with JQuery $.getJSON() Method. I am having some problems with the encoding. The character-set of my app is charset=ISO-8859-1 but i think this fields are submitted with UTF-8. Does anyone know, how can i set encoding in $.getJSON calls? ...

ASP.NET JavaScript Callbacks Without Full PostBacks?

I'm about to start a fairly Ajax heavy feature in my company's application. What I need to do is make an Ajax callback every few minutes a user has been on the page. I don't need to do any DOM updates before, after, or during the callbacks. I don't need any information from the page, just from a site cookie which should always be sen...

How do HttpOnly cookies work with AJAX requests?

JavaScript needs access to cookies if AJAX is used on a site with access restrictions based on cookies. Will HttpOnly cookies work on an AJAX site? Edit: Microsoft created a way to prevent XSS attacks by disallowing JavaScript access to cookies if HttpOnly is specified. FireFox later adopted this. So my question is: If you are using AJ...

How would you handle errors when using jQuery.ajax() ?

When using jQuery's ajax method to submit form data, what is the best way to handle errors? This is an example of what a call might look like: $.ajax({ url: "userCreation.ashx", data: { u:userName, p:password, e:email }, type: "POST", beforeSend: function(){disableSubmitButton();}, complete: function(){enableSubmitBu...

Problems while submitting a UTF-8 form textarea with JQuery/AJAX

I am having problems submitting forms which contain UTF-8 strings with Ajax. I am developing a Struts web application which runs in a tomcat server. This is the environment i set up to work with UTF-8: I have added to tomcat's conf/server.xml the attributes URIEncoding="UTF-8" useBodyEncodingForURI="true" into the Connector tag. I have...

How to keep the browser history in sync when using Ajax?

I'm writing a simple photo album app using ASP.NET Ajax. The app uses async Ajax calls to pre-load the next photo in the album, without changing the URL in the browser. The problem is that when the user clicks the back button in the browser, the app doesn't go back to the previous photo, instead, it navigates to the home page of the app...

Why do I receive a q[num] error when aborting a jQuery queue pipeline?

When creating and executing a ajax request queue with $.manageAjax, I call ajaxManager.abort();, to abort the entire queue due to error, at which time I get an error stating q[num] has no properties (jquery.ajaxmanager.js line 75) here is the calling code: var ajaxManager = $.manageAjax({manageType:'sync', maxReq:0}); // setup code call...

How can I return a variable from a $.getJSON function

I want to return StudentId to use elsewhere outside of the scope of the $.getJSON() j.getJSON(url, data, function(result) { var studentId = result.Something; }); //use studentId here I would imagine this has to do with scoping, but it doesn't seem to work the same way c# does ...

Problems passing special chars with observe_field

I am working on a rails project. Using the tag observe_field, I am taking text typed into a text area, processing it in a control, and displaying the result in a div (very similar to the preview in stack overflow). Everything works fine until I type certain special chars. ? => causes the variable not to be found in the params object (p...

Best AJAX Framework

In Asp.Net web forms, what is the best chioce for providing a righ UI (a la Ajax)? I've been using the built in Ajax support that MS ships in addition to the Ajax Control Toolkit until now, but is there something better and/or easier? ...

Scripting SVG

I'm considering developing a website similar to stackoverflow, but the answers may also consist of drawings (schematics, in this case). I want to have an area in the answer form where they can make this schematic without requiring special plugins, etc. Are we to the point where SVG has or should have critical mass soon (1-2 years) s...

Is it possible to persist (without reloading) AJAX page state across BACK button clicks?

I am familiar with several approaches to making the back button work in AJAX applications in various situations, but I have not found a solution that will work gracefully in my specific scenario. The pages I am working with are the search interface for a site. You enter terms in a normal search box, click "go and wind up at a search re...

What more is needed for Ajax than this function

I have a small JS function that does Ajax for me and another like it that adds in POST data to the request. With Ajax being such a big topic with so many libraries about it, what am I missing from my function, is it insecure or something else worrying? function loadPage(pagePath, displayElement) { var xmlHttp; try { // Firefox, Op...

Retrieving HTTP status code from loaded iframe with Javascript

I used the jQuery Form plugin for asynchronous form submission. For forms that contain files, it copies the form to a hidden iframe, submits it, and copies back the iframe's contents. The problem is that I can't figure out how to find what HTTP status code was returned by the server. For example, if the server returns 404, the data from ...

Ajax polling.

In the project i am currently working on, we have the need to develop a web chat application, not a very complex chat, just a way to connect two people to talk about a very specific topic, we don't need any kind of authentication for one of the two users, we don't have to support emoticons, avatars, or stuff like that. Some project memb...

Security advice for jquery ajax data post?

Hi, I'm using jquery ajax to post updates back to my server. I'm concerned about making sure I have put in place appropriate measures so that only my AJAX calls can post data. My stack is PHP on Apache against a MySQL backend. Advice greatly appreciated! ...

Have you got a CascadingDropDown working with ASP.NET MVC?

If so how? Did you roll your own with jQuery or use the Microsoft AJAX toolkit? Did you create a webservice or call an action? EDIT : Please note that this question was asked before Microsoft announced that they were going to bundle jQuery in with VS/ASP.NET MVC. I think there is less of a discussion around this topic now and the...

How do I install and use the ASP.NET AJAX Control Toolkit in my .NET 3.5 web applications?

How do I get it to work with my project? http://ajax.asp.net/ http://www.codeplex.com/AjaxControlToolkit/ ...