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  • Problems with jQuery getJSON using local files in Chrome

    - by Tauren
    I have a very simple test page that uses XHR requests with jQuery's $.getJSON and $.ajax methods. The same page works in some situations and not in others. Specificially, it doesn't work in Chrome on Ubuntu. I'm testing on Ubuntu 9.10 with Chrome 5.0.342.7 beta and Mac OSX 10.6.2 with Chrome 5.0.307.9 beta. It works correctly when files are installed on a web server from both Ubuntu/Chrome and Mac/Chrome (try it out here). It works correctly when files are installed on local hard drive in Mac/Chrome (accessed with file:///...). It FAILS when files are installed on local hard drive in Ubuntu/Chrome (access with file:///...). The small set of 3 files can be downloaded in a tar/gzip file from here: http://issues.tauren.com/testjson/testjson.tgz When it works, the Chrome console will say: XHR finished loading: "http://issues.tauren.com/testjson/data.json". index.html:16Using getJSON index.html:21 Object result: "success" __proto__: Object index.html:22success XHR finished loading: "http://issues.tauren.com/testjson/data.json". index.html:29Using ajax with json dataType index.html:34 Object result: "success" __proto__: Object index.html:35success XHR finished loading: "http://issues.tauren.com/testjson/data.json". index.html:46Using ajax with text dataType index.html:51{"result":"success"} index.html:52undefined When it doesn't work, the Chrome console will show this: index.html:16Using getJSON index.html:21null index.html:22Uncaught TypeError: Cannot read property 'result' of null index.html:29Using ajax with json dataType index.html:34null index.html:35Uncaught TypeError: Cannot read property 'result' of null index.html:46Using ajax with text dataType index.html:51 index.html:52undefined Notice that it doesn't even show the XHR requests, although the success handler is run. I swear this was working previously in Ubuntu/Chrome, and am worried something got messed up. I already uninstalled and reinstalled Chrome, but that didn't help. Can someone try it out locally on your Ubuntu system and tell me if you have any troubles? Note that it seems to be working fine in Firefox.

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  • Is there a good [and modern] reason to not have static HTML pages with AJAX content , rather than generate pages?

    - by user1725
    Assumptions: We don't care about IE6, and Noscript users. Lets pretend we have the following design concept: All your pages are HTML/CSS that create the ascetics, layout, colours, general design related things. Lets pretend this basic code below is that: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <link href="/example.css" rel="stylesheet" type="text/css"/> <script src="example.js" type="text/javascript"></script> <head> <body> <div class="left"> </div> <div class="mid"> </div> <div class="right"> </div> </body> </html> Which in theory should produce, with the right CSS, three vertical columns on the web page. Now, here's the root of the question, what are the serious advantages and/or disadvantages of loading the content of these columns (lets assume they are all indeed dynamic content, not static) via AJAX requests, or have the content pre-set with a scripting language? So for instance, we would have, in the AJAX example, lets asume jquery is used on-load: //Multiple http requests $("body > div.left").load("./script.php?content=news"); $("body > div.right").load("./script.php?content=blogs"); $("body > div.mid").load("./script.php?content=links"); OR--- //Single http request $.ajax({ url: './script.php?content=news|blogs|links', method: 'json', type: 'text', success: function (data) { $("body > div.left").html(data.news); $("body > div.right").html(data.blogs); $("body > div.mid").html(data.links); } }) Verses doing this: <body> <div class="left"> <?php echo function_returning_news(); ?> </div> <div class="mid"> <?php echo function_returning_blogs(); ?> </div> <div class="right"> <?php echo function_returning_links(); ?> </div> </body> I'm personally thinking right now that doing static HTML pages is a better method, my reasoning is: I've separated my data, logic, and presentation (ie, "MVC") code. I can make changes to one without others. Browser caches mean I'm just getting server load mostly for the content, not the presentation wrapped around it. I could turn my "script.php" into a more robust API for the website. But I'm not certain or clear that these are legitimately good reasons, and I'm not confidently aware of other issues that could happen, so I would like to know the pros-and-cons, so to speak.

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  • SQL Server Table Polling by Multiple Subscribers

    - by Daniel Hester
    Background Designing Stored Procedures that are safe for multiple subscribers (to call simultaneously) can be challenging.  For example let’s say that you want multiple worker processes to poll a shared work queue that’s encapsulated as a SQL Table. This is a common scenario and through experience you’ll find that you want to use Table Hints to prevent unwanted locking when performing simultaneous queries on the same table. There are three table hints to consider: NOLOCK, READPAST and UPDLOCK. Both NOLOCK and READPAST table hints allow you to SELECT from a table without placing a LOCK on that table. However, SELECTs with the READPAST hint will ignore any records that are locked due to being updated/inserted (or otherwise “dirty”), whereas a SELECT with NOLOCK ignores all locks including dirty reads. For the initial update of the flag (that marks the record as available for subscription) I don’t use the NOLOCK Table Hint because I want to be sensitive to the “active” records in the table and I want to exclude them.  I use an Update Lock (UPDLOCK) in conjunction with a WHERE clause that uses a sub-select with a READPAST Table Hint in order to explicitly lock the records I’m updating (UPDLOCK) but not place a lock on the table when selecting the records that I’m going to update (READPAST). UPDATES should be allowed to lock the rows affected because we’re probably changing a flag on a record so that it is not included in a SELECT from another subscriber. On the UPDATE statement we should explicitly use the UPDLOCK to guard against lock escalation. A SELECT to check for the next record(s) to process can result in a shared read lock being held by more than one subscriber polling the shared work queue (SQL table). It is expected that more than one worker process (or server) might try to process the same new record(s) at the same time. When each process then tries to obtain the update lock, none of them can because another process has a shared read lock in place. Thus without the UPDLOCK hint the result would be a lock escalation deadlock; however with the UPDLOCK hint this condition is mitigated against. Note that using the READPAST table hint requires that you also set the ISOLATION LEVEL of the transaction to be READ COMMITTED (rather than the default of SERIALIZABLE). Guidance In the Stored Procedure that returns records to the multiple subscribers: Perform the UPDATE first. Change the flag that makes the record available to subscribers.  Additionally, you may want to update a LastUpdated datetime field in order to be able to check for records that “got stuck” in an intermediate state or for other auditing purposes. In the UPDATE statement use the (UPDLOCK) Table Hint on the UPDATE statement to prevent lock escalation. In the UPDATE statement also use a WHERE Clause that uses a sub-select with a (READPAST) Table Hint to select the records that you’re going to update. In the UPDATE statement use the OUTPUT clause in conjunction with a Temporary Table to isolate the record(s) that you’ve just updated and intend to return to the subscriber. This is the fastest way to update the record(s) and to get the records’ identifiers within the same operation. Finally do a set-based SELECT on the main Table (using the Temporary Table to identify the records in the set) with either a READPAST or NOLOCK table hint.  Use NOLOCK if there are other processes (besides the multiple subscribers) that might be changing the data that you want to return to the multiple subscribers; or use READPAST if you're sure there are no other processes (besides the multiple subscribers) that might be updating column data in the table for other purposes (e.g. changes to a person’s last name).  NOLOCK is generally the better fit in this part of the scenario. See the following as an example: CREATE PROCEDURE [dbo].[usp_NewCustomersSelect] AS BEGIN -- OVERRIDE THE DEFAULT ISOLATION LEVEL SET TRANSACTION ISOLATION LEVEL READ COMMITTED -- SET NOCOUNT ON SET NOCOUNT ON -- DECLARE TEMP TABLE -- Note that this example uses CustomerId as an identifier; -- you could just use the Identity column Id if that’s all you need. DECLARE @CustomersTempTable TABLE ( CustomerId NVARCHAR(255) ) -- PERFORM UPDATE FIRST -- [Customers] is the name of the table -- [Id] is the Identity Column on the table -- [CustomerId] is the business document key used to identify the -- record globally, i.e. in other systems or across SQL tables -- [Status] is INT or BIT field (if the status is a binary state) -- [LastUpdated] is a datetime field used to record the time of the -- last update UPDATE [Customers] WITH (UPDLOCK) SET [Status] = 1, [LastUpdated] = GETDATE() OUTPUT [INSERTED].[CustomerId] INTO @CustomersTempTable WHERE ([Id] = (SELECT TOP 100 [Id] FROM [Customers] WITH (READPAST) WHERE ([Status] = 0) ORDER BY [Id] ASC)) -- PERFORM SELECT FROM ENTITY TABLE SELECT [C].[CustomerId], [C].[FirstName], [C].[LastName], [C].[Address1], [C].[Address2], [C].[City], [C].[State], [C].[Zip], [C].[ShippingMethod], [C].[Id] FROM [Customers] AS [C] WITH (NOLOCK), @CustomersTempTable AS [TEMP] WHERE ([C].[CustomerId] = [TEMP].[CustomerId]) END In a system that has been designed to have multiple status values for records that need to be processed in the Work Queue it is necessary to have a “Watch Dog” process by which “stale” records in intermediate states (such as “In Progress”) are detected, i.e. a [Status] of 0 = New or Unprocessed; a [Status] of 1 = In Progress; a [Status] of 2 = Processed; etc.. Thus, if you have a business rule that states that the application should only process new records if all of the old records have been processed successfully (or marked as an error), then it will be necessary to build a monitoring process to detect stalled or stale records in the Work Queue, hence the use of the LastUpdated column in the example above. The Status field along with the LastUpdated field can be used as the criteria to detect stalled / stale records. It is possible to put this watchdog logic into the stored procedure above, but I would recommend making it a separate monitoring function. In writing the stored procedure that checks for stale records I would recommend using the same kind of lock semantics as suggested above. The example below looks for records that have been in the “In Progress” state ([Status] = 1) for greater than 60 seconds: CREATE PROCEDURE [dbo].[usp_NewCustomersWatchDog] AS BEGIN -- TO OVERRIDE THE DEFAULT ISOLATION LEVEL SET TRANSACTION ISOLATION LEVEL READ COMMITTED -- SET NOCOUNT ON SET NOCOUNT ON DECLARE @MaxWait int; SET @MaxWait = 60 IF EXISTS (SELECT 1 FROM [dbo].[Customers] WITH (READPAST) WHERE ([Status] = 1) AND (DATEDIFF(s, [LastUpdated], GETDATE()) > @MaxWait)) BEGIN SELECT 1 AS [IsWatchDogError] END ELSE BEGIN SELECT 0 AS [IsWatchDogError] END END Downloads The zip file below contains two SQL scripts: one to create a sample database with the above stored procedures and one to populate the sample database with 10,000 sample records.  I am very grateful to Red-Gate software for their excellent SQL Data Generator tool which enabled me to create these sample records in no time at all. References http://msdn.microsoft.com/en-us/library/ms187373.aspx http://www.techrepublic.com/article/using-nolock-and-readpast-table-hints-in-sql-server/6185492 http://geekswithblogs.net/gwiele/archive/2004/11/25/15974.aspx http://grounding.co.za/blogs/romiko/archive/2009/03/09/biztalk-sql-receive-location-deadlocks-dirty-reads-and-isolation-levels.aspx

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  • jQuery Ajax call - Set variable value on success.

    - by Nathan
    Hey all, I have an application that I am writing that modifies data on a cached object in the server. The modifications are performed through an ajax call that basically updates properties of that object. When the user is done working, I have a basic 'Save Changes' button that allows them to Save the data and flush the cached object. In order to protect the user, I want to warn them if the try to navigate away from the page when modifications have been made to the server object if they have not saved. So, I created a web service method called IsInitialized that will return true or false based on whether or not changes have been saved. If they have not been saved, I want to prompt the user and give them a chance to cancel their navigation request. Here's my problem - although I have the calls working correctly, I can't seem to get the ajax success call to set the variable value on its callback function. Here's the code I have now. ////Catches the users to keep them from navigation off the page w/o saved changes... window.onbeforeunload = CheckSaveStatus; var IsInitialized; function CheckSaveStatus() { var temp = $.ajax({ type: "POST", url: "URL.asmx/CheckIfInstanceIsInitilized", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(result) { IsInitialized = result.d; }, error: function(xmlHttpRequest, status, err) { alert(xmlHttpRequest.statusText + " " + xmlHttpRequest.status + " : " + xmlHttpRequest.responseText); } }); if (IsInitialized) { return "You currently have unprocessed changes for this Simulation."; } } I feel that I might be trying to use the Success callback in an inappropriate manner. How do I set a javascript variable on the Success callback so that I can decide whether or not the user should be prompted w/ the unsaved changes message? As was just pointed out, I am making an asynchronous call, which means the rest of the code gets called before my method returns. Is there a way to use that ajax call, but still catch the window.onunload event? (without making synchronos ajax)

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  • jQuery: AJAX umlauts & special characters are a mess

    - by rayne
    I've just created my first ajax function with jQuery which actually works, but unfortunately the character encoding (for characters like ä, ö, ü, ß, c, c, å, ø) is a nightmare. My files and my database are all UTF-8. I've tried a multitude of options in the ajax function and the PHP function, none of which were satisfactory. This is my ajax var dataString = { 'name': name, 'mail': mail // other stuff } $.ajax({ type: "POST", url: "/post.php", data: dataString, contentType: "application/x-www-form-urlencoded;charset=UTF-8", cache: false, success: function(html){ // do stuff } I've tried it without contentType: "application/x-www-form-urlencoded;charset=UTF-8" and I've tried to wrap the affected data in encodeURIComponent(), none of which worked. When I use that AJAX with htmlentities() in my php, my umlauts look like this in plain text: UE Ã?, AE Ã?, OE Ã?, ue ü, ae ä, oe o And like this in the database: UE Ãœ , AE Ä, OE Ö, ue ü, ae ä, oe o If I don't use htmlentities() but mysql_real_escape_string() instead (or neither), they look good in plain text, but they look like this in the database: AE Ä, OE Ö, UE Ãœ, ae ä oe ö ue ü I've been trying tons of options for hours now, but I can't find a solution that works. So far the only option I seem to have is having them look like a total mess in the database, but that would be very contraproductive if those data sets need to be edited.

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  • .Ajax with jQuery and MVC2

    - by Mario
    Im trying to create an ajax (post) event that will populate a table in a div on button click. I have a list of groups, when you click on a group, I would like the table to "disappear" and the members that belong to that group to "appear". My problem comes up when using jQuery's .ajax... When I click on the button, it is looking for a controller that doesnt exist, and a controller that is NOT referenced. I am, however, using AREAS (MVC2), and the area is named Member_Select where the controller is named MemberSelect. When I click on the button, I get a 404 stating it cannot find the controller Member_Select. I have examined the link button and it is set to Member_Select when clicked on, but here's the ajax call: $.ajax({ type: "POST", url: '/MemberSelect/GetMembersFromGroup', success: function(html) { $("#groupResults").html(html); } }); I havent been able to find any examples/help online. Any thoughts/suggestions/hints would be greatly appreciated. Thanks!

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  • "not well-formed" warning when loading client-side JSON in Firefox via jQuery.ajax

    - by Zhami
    I am using jQuery's ajax method to acquire a static JSON file. The data is loaded from the local file system, hence there is no server, so I can't change the mime type. This works fin in Safari, but Firefox (3.6.3) reports the file to be "not well-formed". I am aware of, and have reviewed, a similar post here on Stack Overflow: http://stackoverflow.com/questions/677902/not-well-formed-error-in-firefox-when-loading-json-file-with-xmlhttprequest I believe my JSON is well-formed: { "_": ["appl", "goog", "yhoo", "vz", "t"] } My ajax call is straightforward: $.ajax({ url: 'data/tickers.json', dataType: 'json', async: true, data: null, success: function(data, textStatus, request) { callback(data); } }); If I wrap the JSON with a document tag: <document>JSON data</document> as was mentioned in the above referenced posted question, the ajax call fails with a parserror. So: is there a way to avoid the Firefox warning when reading in client-side JSON files?

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  • JQuery Validation Plugin: Use Custom Ajax Method

    - by namtax
    Hi Looking for some assistance with the Jquery form validation plugin if possible. I am validating the email field of my form on blur by making an ajax call to my database, which checks if the text in the email field is currently in the database. // Check email validity on Blur $('#sEmail').blur(function(){ // Grab Email From Form var itemValue = $('#sEmail').val(); // Serialise data for ajax processing var emailData = { sEmail: itemValue } // Do Ajax Call $.getJSON('http://localhost:8501/ems/trunk/www/cfcs/admin_user_service.cfc?method=getAdminUserEmail&returnFormat=json&queryformat=column', emailData, function(data){ if (data != false) { var errorMessage = 'This email address has already been registered'; } else { var errorMessage = 'Good' } }) }); What I would like to do, is encorporate this call into the rules of my JQuery Validation Plugin...e.g $("#setAdminUser").validate({ rules:{ sEmail: { required: function(){ // Replicate my on blur ajax email call here } }, messages:{ sEmail: { required: "this email already exists" } }); Wondering if there is anyway of achieving this? Many thanks

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  • ie8 breaks with asp.net ajax

    - by Amadeo Torese
    Hello, When using asp.net ajax (scriptmanager, timer, updatepanel) with ie8, after certain time (~3h) IE breaks with null object, constructor, or paramArray (depending on the asp.net code). Even with the simplest timer (no ajax, no updatepanel) ie8 still breaks. On every other browser it works fine, and if I code the ajax myself it works. Since google and msdn forums turned up nothing I'm wondering if anybody here has had similar problems with ie8 browser.

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  • Having trouble with instantiating objects in PHP & Ajax custom shopping cart

    - by Phil
    This is my first time playing with both ajax and objects, so please go easy on me I have 3 pages that make up the tester shopping cart. 1) page with 'add' 'remove' buttons and ajax code to call the PHP functions on page 2. this is the actual user page with the HTML output. 2) page with PHP cart function calls, receives $_GET requests from ajax on page 1 and calls functions of the cart object from page 3, returns results to page 1. 3) page with cart object definition. Here's the problem I believe I'm having. Currently I have 'session_start()' on pgs 1 & 2, and the cart definition (pag 3) on pgs 1 & 2. I only define '$_SESSION[cart]= new Cart' on page 2. However, it seems like each time i hit an ajax function (eg each time pg 2 reloads) it seems like it's rewriting $_SESSION['cart'] over again, thus it's always empty at each new click (even tho it displays results of that click) However, if i don't define '$_SESSION[cart] = new Cart' on pg 2, i get an error: Fatal error: main() [function.main]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "Cart" of the object you are trying to operate on was loaded before unserialize() gets called or provide a __autoload() function to load the class definition in /home3/foundloc/public_html/booka/carti.php on line 17 Any suggestions? How can i stop re-creating my cart each time my page 2 (php cart function page) is called by ajax?

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  • Ajax.dll causing problem?

    - by Ramesh
    Hi all, I am using Ajax.dll.I have registered the class using Ajax.Utility.RegisterTypeForAjax(typeof(Default)) in page load. I have written a function in the server side to return "Name",like [Ajax.AjaxMethod(HttpSessionStateRequirement.ReadWrite)] public string GetName() { return "Test"; } and i accessed from the page like Default.GetName(). For first time its working fine.after leaving system idle for one hour if click any link, that throws error "default is undefined ". Is there anyway to fix this issue?

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  • Jquery Multiple ajax call

    - by Mehmet MERCAN
    I have a listed navigation with letters and i am trying to call the actors and directors from different json files when the user clicked a letter. I used 2 ajax calls to get the data from actor.php and director.php. It works fine on my local machine, but only the first one works on server. How can i make each ajax calls working? $(document).ready(function(){ $('.letters').click( function(){ var letter=$(this).html(); $.ajax({ url: 'actor.php?harf='+letter, dataType: 'json', success: function(JSON) { //some code } }); $.ajax({ url: 'director.php?harf='+letter, dataType: 'json', success: function(JSON) { // some code } }); }); });

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  • jQuery $.ajax success must be a callback function?

    - by b. e. hollenbeck
    I've created a wrapper function for jQuery's $.ajax() method so I can pass different dataTypes and post variables - like so: function doPost(dType, postData, uri){ $.ajax({ url: SITE_URL + uri, dataType: dType, data: postData, success: function(data){ return data; }); } The problem I'm having is getting the data (which is always JSON) back out. I've tried setting a var ret before the $.ajax() function call and setting it as ret = data in the success function. Am I being stupid about this? If I don't set a success function, will the $.ajax simply return the data? Or is it just success: return data? Or does success require a callback function to handle the data, which could just be return data?

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  • How to setup ASP.NET Ajax Library and WCF Data Services

    - by Jronny
    I was following http://msdn.microsoft.com/en-us/magazine/ee336022.aspx but there were js errors. for example Sys is undefined So I added http://ajax.microsoft.com/ajax/act/40412/start.js. Then Sys.Data is undefined So I added http://ajax.microsoft.com/ajax/act/40412/MicrosoftAjaxDataContext.debug.js. But then TypeError: Sys.Data.OpenDataContext is not a constructor What shall I do to be able to call the service the way they do it on the first link? What are the scripts and resources needed? Thanks a lot.

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  • data is not posted in $_POST variable using AJAX [migrated]

    - by Oliver
    Im having a problem in one of my script. Server is running in php, and im using AJAX to post data. Here is my script. PHP script: 0){ echo "Search Result :"; for ($x=0;$xProject Name:   ".mysql_result($result,$x,"projname").""; echo "APMS ID:   ".mysql_result($result,$x,"apmsid").""; echo "Prefix/es:   ".mysql_result($result,$x,"projprefix").""; echo "Usage Type:   ".mysql_result($result,$x,"usagetype").""; echo "Rate:   ".mysql_result($result,$x,"projrate").""; echo "Offer Details:   ".mysql_result($result,$x,"offerdetails").""; } }else{ echo "No results found ..."; } }else{ echo "Problems encountered while processing the data ..."; } ? JS Script: function QueryPrefix() { var xmlhttp; var pStr = document.getElementById('Editbox2'); var htmlHolder = document.getElementById('Html1'); var butStr = document.getElementById('Button1'); if (pStr.value.length == 0){ alert("Please enter a value on the box provided!"); return; } pStr.value=""; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4) { htmlHolder.innerHTML=xmlhttp.responseText; butStr.disabled=false; } } butStr.disabled=true; xmlhttp.open("POST","searchutype.php",false); xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded"); xmlhttp.send("pStr=" + pStr.value); }

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  • Asp.Net Mvc JQuery ajax input parameters are null

    - by Dofs
    Hi, I am trying to post some data with jQuery Ajax, but the parameters in my Ajax method are null. This is simple test to send data: var dataPost = { titel: 'titel', message: 'msg', tagIds: 'hello' }; jQuery.ajax({ type: "POST", url: "Create", contentType: 'application/json; charset=utf-8', data: $.toJSON(dataPost), dataType: "json", success: function(result) { alert("Data Returned: "); } }); And my Ajax method looks like this: [HttpPost] public ActionResult Create(string title, string message, string tagIds) {... } There is something basic wrong with the data I send, but I can't figure out what. All the time the title, message and tagIds are null, so there is something wrong with the encoding, I just don't know what. Note: The jQuery.toJSON is this plugin

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  • AJAX call in for loop won't return values to correct array positions

    - by Heilemann
    I need to get a range of pages using AJAX and put them into an array, where their given place in the array is equal to the i of a for loop (it's a caching-like function for blog pages, and the range of the for loop is entirely variable). I'm doing something akin to the following: var bongo = new Array(); for (i = 0; i < 10; i++) { jQuery.ajax({ type: "GET", url: http://localhost, data: queryString, success: function(request) { bongo[i] = request } }) } The problem is, that unless I add async: false to the .ajax options (which would make it... SJAX?), which causes the requests to basically pause the browser, going against what I'm trying to do, the i in the success callback will always end up being 11, whereas I of course want it to pour the returned data into each slot of the array from 0 to 10. I've tried replacing the line with this: bongo[i] = jQuery.ajax({ type: "GET", url: http://localhost, data: queryString }).responseText But that made no difference.

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  • jQuery ajax link, returned data includes a from that wont submit

    - by calumogg
    Hi everyone, I have a problem with the returned data from a ajax request. Basically when I click on a link it runs a ajax request to load some html into a div, that part is working fine the problem comes when the data has been loaded. Part of the html loaded is a form, this form works fine if I load the page directly but when it is loaded through ajax into the div it wont submit but the rest of the links in the html work fine. Here is the code that requests the remote html data: // Ajax to load image editing page $('a.editpicture').click(function(e) { e.preventDefault(); var picture = $(this).attr("id") $.ajax({ url: 'http://localhost/digital-xposure/index.php/members/viewpicture/' + picture, success: function(data) { $('#update-picture').html(data); } }); }); This is the form it loads: <form method="post" id="updatepicture" name="updatepicture" action="http://localhost/digital-xposure/index.php/members/editpicture"/> <p>Title<input type="text" name="title" id="title" style="input" value="<?php echo $title; ?>"></P> <p>Album<?php echo $albums;?></p> <p>Description<textarea name="description" id="description" cols="50" rows="5"><?php echo $description; ?></textarea></P> <input type="hidden" name="filename" id="filename" value="<?php echo $filename; ?>" /> <input type="button" name="update-submit" id="update-submit" value="Update details" class="button"> Or <input type="button" onClick="location.href='<?php echo base_url(); ?>index.php/members/deletepicture/<?php echo $filename; ?>'" value="Delete picture" class="button"> </form> Any ideas why the form wont submit after being loaded into the div? Any help is greatly appreciated, thanks. Calum

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  • jQuery ajax success chaining Internet Explorer Issues

    - by Nickd
    I have a jQuery ajax function that retrieves JSON data. In the success block I call another function to parse the data and update the page. At the end of this parsing/updating function a different ajax call is made. This works perfectly in all browsers except Internet Explorer (7 and 8). The problem is Internet explorer thinks the script is taking too long to process because the success block from the first ajax call doesn't complete until the 2nd ajax call finishes. I get the message: "Stop running this script? A script on this page is causing your web browser to run slowly. If it continues to run, your computer might become unresponsive." My jQuery code: $("#id_select").bind("change", function(e){ $.ajax({ url: "/retrieve_data.js", data: {id:$(e.target).children(":selected").attr("value")}, type: "get", dataType:"json", success: function(data, status, form){ processData(data); }, error: function(response, status){ alert(response.responseText); } }); }) Any suggestions on how to get IE to stop timing out or to accomplish this task without rewriting all my jQuery functions would be appreciated.

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  • Getting Started with AJAX ToolKit Controls

    - by Aviran
    I am trying to make my first AJAX Control and I get error. I probbly missed some steps but I cann't find them eventhough I read many tutorials, probbly since I am new in AJAX, so I need to be guided step-by-step. These are the steps I've already done: Downloading AJAX ToolKit. Adding These Controls to the ToolBox. creating new ASP.NET Website (I heard about AJAX-Enabled Option, but I dont have this option) Adding a AJAX Tool. And thats it. I read that I need to register add AjaxControlToolkit.dll in application bin folder, but I dont know how to do that and I dont have Bin Folder in my website, only App_Data Folder. than I need to add this to the web config: <add tagPrefix="ajaxToolkit" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit"/> than I need to add this to my website: <asp:ScriptManager ID="scriptmanager1" EnablePartialRendering="true" runat="Server" /> This is the error I receive: "Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS0012: The type 'System.Web.UI.ExtenderControl' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'." Source Error: Line 16: <br /> Line 17: <asp:Label ID="Label1" runat="server" Text="Label" Width="229px"></asp:Label><br /> Line 18: <asp:ConfirmButtonExtender ID="ConfirmButtonExtender1" runat="server" ConfirmText="are you sure" Line 19: TargetControlID="Button1"> Line 20: </asp:ConfirmButtonExtender> Does anyone know how can I solve this error?

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  • Changing html <-> ajax <-> php/mysql to threaded approach

    - by Saif Bechan
    I have an application that needs to be updated real-time. There are various counters and other information that have to come from the database and the system needs to be up to date for the user. My approach now is just a normal ajax request every second to get the new values from the database. There is a JavaScript which loops every second getting the values trough ajax. This works fine but I think its very inefficient. The problem There is an ajax script that loops every second requesting data from php # On the server it has to load the PHP interpeter The PHP file has to get the data and format it correctly # PHP has to make a connection with the mysql database Work with the database(reads,never writes) Format the data so it can be send Send the data back to the browser # Close the database connection, and close the php interpeter Last the browser has to read these values and update the various html parts Now with this approach it has to load the interpreter and make a db connection every second. I was thinking of a way to make this more efficient, and maybe use a threaded approach to this. Threaded aprouch Do a post to the PHP when you enter the page and keep the connection alive In PHP only load the interpreter once, and make a connection to the DB ones Every second send an ajax response to the javascript listener The javascript listener than just changes values as the response from php arrives. I think this approach will be a great optimization to the server load and overall performance. But I can spot some weak point in the system and i need some help with these. Problems with the approach PHP execution time limit I don't think PHP is designed for such a setup. I know there is a time limit on php script execution. I don't know if an everlasting loop in PHP will cause any serious cpu/memory problems. Sending ajax request without breaking I don't know if it is possible to have just one ajax post action and have open and accepting data. user exists the page What will happen when the user exists the page and the PHP script is still going. Will it go on forever. security issues so far i can't think of any security issues. Almost every setup you use have some security issues. Maybe there are some with this solution I do not know of. Open to other solution I really want to change the setup as it is now and move to a threaded approach or better. If someone has a better approach to tackle this I definitely want to hear that. Maybe the usage of some other scripts is better suited for having an ongoing runtime. I only know php and java so any suggestions are welcome and I am willing to dig trough. I know there are things like perl, python etcetera that are used for this type of threaded but i don't know which one is best suited. When using other script If the best way is to go with other type of script like perl,python etcetera I do have some critera. The script has to be accessible via ajax post If it accepts some kind of json encode/decode it would be nice The script has to be able to access the session file This is essential because I need to know if the user is logged in The script has to be able to easily talk to MySQL All comments are welcome, and I hope this question is helpful to other also. Cheers!

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  • GET request in AJAX-retrieved HTML

    - by ufw
    There is some HTML code which appears on the page as the result of AJAX request/response. This HTML contains GET requests to another php script. Links containing this requests are not working while "real" HTML (added on the page manually) works normally. When I open the page source with Ctrl+U I see empty div's (but they actually have HTML retrieved via AJAX) and the full-fledged HTML code added manually. Can't figure out how can I make the AJAX-retrieved links working. This is how I try to form the HTML code which must be added to the page as the result of AJAX response. <?php //some selections from the database... //all subsequent varibles are the members of $row=(mysql_fetch_array($query)) array; $html_to_be_inactive = '<li id="productID_' . $productID . '"> <a href=work.php?action=deleteFromBasket&productID=' . $productID . ' onClick="return false;"> <img src="images/delete.png" id="deleteProductID_' . $productID . '"> </a> ' . $productName . '(' . $totalItems . ' items) - $' . ($totalItems * $productPrice) . '</li>'; echo $html_to_be_inactive; ?> And that is it, result of 'echo' appears on the page after successful AJAX request as the simple HTML, and it does nothing when I click the link. I do not perform DOM 'append' methods as I'm not familiar with DOM yet. I can see all the elements mentioned in $thml_to_be_inactive but the link seems to be really inactive. Also this HTML is absent in the "Ctrl+U" output, I can see it only when I select "Inspect element" in the browser. The HTML which was added manually operates the same items as usual, but I need AJAX-retrieved HTML to be working as well. I suspect I need to perform some 'append' method via JavaScript or jQuery, but I don't know how to do it in a proper way. Thanks.

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