Error Handling With Ajax
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Jquery Ajax Error Handling
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Xmlhttprequest Error Handling
it only takes a minute: Sign up how to catch ajax query post error? up vote 94 down vote favorite 16 I would like to catch the error and show the appropriate message if the ajax request fails. My ajax error handling javascript code is like the following, but I could not manage to catch the failure ajax request. function getAjaxData(id) { $.post("status.ajax.php", {deviceId : id}, function(data){ var tab1; if (data.length>0) { tab1 = data; } else { tab1 = "Error in Ajax"; } return tab1; }); } I found out that, "Error in Ajax" is never executed when the Ajax request failed. How to handle the ajax error and show the appropriate message if it fails? Thanks very much. jquery ajax php ajax error handling post error-handling share|improve this question asked May 14 '10 at 12:07 TTCG 1,927174467 add a comment| 5 Answers 5 active oldest votes up vote 100 down vote accepted since jQuery 1.5 you can use deffered objects mechanism $.post('some.php', {name: 'John'}) .done(function(msg){ }) .fail(function(xhr, status, error) { // error handling }); another way is using .ajax $.ajax({ type: "POST", url: "some.php", data: "name=John&location=Boston", success: function(msg){ alert( "Data Saved: " + msg ); }, error: function(XMLHttpRequest, textStatus, errorThrown) { alert("some error"); } }); share|improve this answer edited Jul 13 at 8:24 answered May 14 '10 at 12:11 choise 9,4221561120 19 +1 Pretty lame that the $.post shorthand function includes a success callback but not one for errors. –Yuck Aug 19 '12 at 13:41 14 @Yuck $.post can accept an error callback using deferred objects. Take a look at my answer below for an example. –Michael Venable Aug 24 '12 at 21:18 2 Also, I way to make $.ajax more readable is to use a hash for your data. For example: { name : 'John', location: 'Boston' } –briangonzalez Jan 24 '13 at 15:56 3 The success and error callbacks above are obsolete as of jQuery 1.8 api.jquery.com/jQuery.post –Baldy Nov 27 '13 at 11:53 @MichaelVeneble i think you can use $.post().error() –clintgh Dec 19 '14 at 6:58 | show 1 more comment up vote 206 down vote jQuery 1.5 added deferred objects th
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Ajax Exception Handling
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Ajax Error Handling Best Practices
Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up jQuery AJAX Error Handling (HTTP Status http://stackoverflow.com/questions/2833951/how-to-catch-ajax-query-post-error Codes) up vote 21 down vote favorite 3 We have an API which uses proper HTTP status codes for errors, and responds with JSON-encoded responses and appropriate Content-Type header. My situation is that jQuery.ajax() triggers the error callback when it encounters an HTTP error status, and not the success callback, so even when we have an intelligible JSON response, we have to resort to something like http://stackoverflow.com/questions/12734714/jquery-ajax-error-handling-http-status-codes this: $.ajax({ // ... success: function(response) { if (response.success) { console.log('Success!'); console.log(response.data); } else { console.log('Failure!'); console.log(response.error); } }, error: function(xhr, status, text) { var response = $.parseJSON(xhr.responseText); console.log('Failure!'); if (response) { console.log(response.error); } else { // This would mean an invalid response from the server - maybe the site went down or whatever... } } }); Is there a better paradigm than doing identical error handling in two spots in each jQuery.ajax() call? It's not very DRY, and I'm sure I've just missed something somewhere on good error handling practices in these cases. jquery ajax error-handling share|improve this question asked Oct 4 '12 at 19:44 drrcknlsn 11.5k73980 I'm assuming by HTTP Status code, you mean you are sending back 501 as the HTTP status code on error. Why would you do that if you are properly handling the error on the server side? –Lawrence Johnson Oct 4 '12 at 19:48 Check out the jquery.ajax (api.jquery.com/jQuery.ajax) statusCode parameter. –ron tornambe Oct 4 '12 at 19:50 2 @LawrenceJohnson: I'm using the response codes as they were meant to be used. Sending a 200 OK every response would require reinventing the wheel with re
Team Conduct Brand Guide Donate jQuery API Documentation Download API http://api.jquery.com/ajaxerror/ Documentation Blog Plugins Browser Support search Search jQuery API Documentation .ajaxError() Categories: Ajax > Global Ajax Event Handlers .ajaxError( handler )Returns: jQuery http://cypressnorth.com/programming/global-ajax-error-handling-with-jquery/ Description: Register a handler to be called when Ajax requests complete with an error. This is an Ajax Event. version added: error handling 1.0.ajaxError( handler ) handler Type: Function( Event event, jqXHR jqXHR, PlainObject ajaxSettings, String thrownError ) The function to be invoked. Whenever an Ajax request completes with an error, jQuery triggers the ajaxError event. Any and all handlers that have been registered with the .ajaxError() ajax error handling method are executed at this time. Note: This handler is not called for cross-domain script and cross-domain JSONP requests. To observe this method in action, set up a basic Ajax load request. 1 2 3 <button class="trigger">Triggerbutton><div class="result">div><div class="log">div> Attach the event handler to the document: 1 2 3 $( document ).ajaxError(function() { $( ".log" ).text( "Triggered ajaxError handler." );}); Now, make an Ajax request using any jQuery method: 1 2 3 $( "button.trigger" ).on( "click", function() { $( "div.result" ).load( "ajax/missing.html" );}); When the user clicks the button and the Ajax request fails, because the requested file is missing, the lo
Web Programming & Development with 4 comments Error handling and feedback for AJAX requests can be a tedious undertaking for JavaScript heavy web applications. Often the AJAX functions are spread out in your code and, if you're like me, you may put off error handling until late in the game. In a significant web project we're wrapping up, we were struggling to effectively handle session expiration issues when making AJAX calls. A major portion of this application uses AJAX and jQuery to perform the primary tasks in the software but the authentication is handled by .NET forms authentication on the server side. The sliding expiration is only 20 minutes, so when you walk away for a bit and return, you could easily create a new AJAX action which would fail silently due to an unauthorized error. Our options as we saw them were: Ping the server periodically to check for authorization, then redirect if unauthorized Add an error handling function to each AJAX function to deal with problems Add global error handling if possible It turns out that, with JQuery, option 3 is trivial and exactly what we needed. AJAX Setup jQuery has a handy method called $.ajaxSetup() which allows you to set options that apply to all jQuery based AJAX requests that come after it. By placing this method in your main document ready function, all of the settings will be applied to the rest of your functions automatically and in one location. $(function () { //setup ajax error handling $.ajaxSetup({ error: function (x, status, error) { if (x.status == 403) { alert("Sorry, your session has expired. Please login again to continue"); window.location.href ="/Account/Login"; } else { alert("An error occurred: " + status + "nError: " + error); } } }); }); In this example, we're using the $.ajaxSetup method to define an on error handler. In this handler we check for a HTTP Response code 403 (Forbidden) and if found, redirect to the login screen. This solved our problem across the entire application in one shot. Additionally we add a very basic and generic error message