JQuery :: $.ajax() Callbacks Not Being Executed?
May 10, 2010I am trying to execute slightly more than "Hello, world" using .ajax() specifically and with both a success and error callback. I have:
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JQuery :: Ajax Callbacks Not Being Called?
May 17, 2010I'm having problems with callbacks in the code below:
$.ajax({
dataType : 'jsonp',
jsonpCallback : 'get_json',
success : function(d) { alert(d); },
error : function() { alert("ouch"); },
url : data_url
})}
I have verified that the server is returning valid json. My jsonpCallback is called, but neither the success nor the error callbacks are. I'm stumped by this.
JQuery :: Ajax Method - Callback Function Not Executed
Mar 16, 2011I am trying to retrieve json data from the world bank's API, here's my code:
<html>
<head>
<script src="[URL]"></script>
<script type="text/javascript">
var theData;
$(document).ready(function(){
$("button").click(function(){
$.ajax({ url: '[URL]',
success: function(data) {
/*this alert message does not show*/
alert(data);
}, dataType: 'json' });
});
});
</script>
</head>
<body>
<p></p>
<button> Get World Bank Data </button>
</body>
The callback function is not executed but there is response when I checked it using firebug.
AJAX :: Callbacks And Parameters From Outside The Scope Of The Callback?
Feb 9, 2011This could appear under Ajax, for example, you could have multiple objects that make a singular ajax call (say an RPC-like request) and you need to update the object that made the call during the callback with the result, but it doesn't have to be. The particular problem I'm thinking about happens to be ajax, particularly with multiple objects accessing the same ajax request (meaning I can't use a global or temporary variable).
One way that seems like it would work (just thinking about it in my head), is to create a hash, and to pass the key through the request, store the key in the response, and pick it up on the callback side. Then remove the item from the hash when done.
JQuery :: Prevent The Multiple Callbacks?
Dec 21, 2010how to use jQuery I created my own AutoComplete Textbox (although there is one in the jQueryUI Lib). The users types something in a textbox and after 3 characters, the getJSON method is beeing called. This processes the data by calling another site and after received the data, it displays the result in a div tag.If a user types something, it automatically searchs - my problem is the delay. Because if a user continuous, he will already receive (delayed) results - so far it works as designed. My question is, how can I stop the other callbacks of being processed and only receive and display the details of the last callback?
Attachments
AjaxSearch.txt
Size : 4.14 KB
Download : 306
JQuery :: Exceptions Inside Callbacks Are Silently Ignored?
Jul 21, 2011I'm using jQuery-1.6.2 and stumbled upon the problem that exceptions within AJAX callbacks are silently ignored:
$.ajax({
url: '/',
success: function() {
[code]....
JQuery :: Loaded Up New 1.4 And Now Sucess Callbacks Don't Work
Jan 16, 2010Really excited about the new 1.4 release. Looks like a lot of good stuff. Anyway, I've been using the json format to pass data back from the server and after upgrading to 1.4 I'm getting the parsererror, even when I simplify my response to something like:
In php I've been using:
To set the header.
Guess I'm stuck using the older version until I find a solution.
JQuery :: Continuation-style Programming / Are There Constraints On Fx Callbacks
Feb 18, 2011The documentation on e.g. the fadeIn() method does not specify any constraints on the callback argument. Does that mean that 'anything will work'? Specifically, is recursion allowed?I want to know whether jQuery design has deliberately taken this into account. Yes, I can read the source code. No I don't plan to do so (for now), since I consider it an essential gap in the documentation.[code]
View 5 Replies View RelatedJQuery :: Jsonp Callbacks Execution Order In Firefox
Apr 6, 2010I am trying to develop a iGoogle-like dashboard that uses JSONP to get the content of each widget from other (trusted) sites.Each widget is a div that will take care of getting its content using $.ajax() and use the callback to update the div with the html content returned with JSONP.The problem I have happens only in Firefox (I'm using 3.6.3):when a site is unavailable or takes longer to return the JSONP content for a widget, it seems that the callback for the other widget does not get executed. All the widgets stay in the "loading" state although I'm sure they have all received the answer.What's puzzling is that if I hit the "stop" button of Firefox, the content of the other widgets get displayed (ie. their displaying callbacks get executed).
If the calls are asynchronous, what prevents Firefox from executing the callbacks for the other widgets once the response is received?Do you have any idea of what's happening and if there's some way around this?
JQuery :: Switched To 1.6.1 Immediately The Success Callbacks Of Functions Did Not Trigger?
May 13, 2011There is probably something going on in my environment but when running 1.5.2, jquery runs and behaves fine. When I switched to 1.6.1 immediately the success callbacks of ajax functions did not trigger. I did not see the release notes mention anything new regarding that.
This includes
$.post("url", function() { console.log("will i get printed?"); });
Here is a code sample which fails
$(".foo").click(function(e) {
var link = $(this);
e.preventDefault();[code].....
The callback function for the ajax is never invoked.As part of my application, I have the following ajax setup going
$.ajaxSetup({
'beforeSend': function(xhr) {xhr.setRequestHeader("Accept", "text/javascript")}
});
Firefox 4.0.1, Ubuntu 10.04, Firebug 1.7
JQuery :: Callbackfunction Will Not Be Executed?
Nov 29, 2011i need to wrap the following code with (function($){ ... })(jQuery);But when i do so than the callbackfunction jsonpCallback will not be executed anymore.I hope someone can explain that to me...
// ( function($)
{$(document).ready(function() {
var error_container = $('#ul_demo_error')
[code]....
JQuery :: Function Only Gets Executed Once
Apr 29, 2010I have a div with a click event that fires a show('slow')... however if the user clicks on the div multple times the animation plays that many times... is there a way to make it so that the click event is only executable once the animation is complete?.
View 2 Replies View RelatedJQuery :: Both 'if' And 'else' Blocks Being Executed?
Jul 10, 2009I am experiencing some crazy stuff, at least crazy to me Both the 'if' and 'else' blocks (according to firebug) are being executed in the following anonymous function:
[Code]...
Callbacks : Make And Use Them?
May 31, 2009What is a callback function and how do we make and use them?
View 3 Replies View RelatedJQuery :: Dynamic Added/executed Script?
Apr 23, 2009Using ajax and jquery I'm calling a function on the server code that returns a javascript script that I need to assign to a div and get executed automatically when assigned.So far I couldn't do that, seems that the assigned script to the innerHTML of the div can'r be executed dynamically.Basically I'd like something like assign an alert('hello world') to the innerHTML and automatically see the pop up with the message.
View 12 Replies View RelatedJQuery :: Function(data) Not Being Executed After $.post
Mar 22, 2010I am new to all this but making good progress and having fun in the process. I have written quite a bit over recent weeks (including a few $.post / $.ajax calls) for various sites/applications but this one is really puzzling me. Here is a snippet of code that is causing me problems.
[Code]....
The problem is that execution jumps from line 2 to line 6 ... ignoring the function(data) and I am not sure why. I get the correct value of "team" arriving at the perl script .... and the perl writes the correct json back. I just can't think where else I need to look to debug this - as I said, I have done something similar 5-6 times over the last few weeks - all without a problem. So I am sure I am doing something stupid here.
JQuery :: Functions Not Executed On Page Load?
Apr 29, 2011Im having some troubles with some functions i launch in $(document).ready() to initialize the page. Then if i click on browser refresh everything goes fine... even more strange when i place alerts between then calls to these functions everything goes fine too... but the first time the page is loaded it seems that the functions are not executed at all.
View 3 Replies View RelatedJQuery :: Control The Sequence In Which Commands Are Executed?
Feb 18, 2011I am a self thought web developer and am constantly having problems making sure that certain commands are finished executing before others are started. My most recent problem is trying to append a large amount of data, to a div, then sliding it down slowly. Since that data takes a while to append, the system is doing both at the same time, therefore not giving me the slide down effect. Here is the code:
$('#SomeDiv').append(data);
$('#image1').animate({"left": "+=300px","top": "-=200px"}, "slow");
$('#image2').animate({"left": "+=120px"}, "slow");
$('#Image3').animate({"top": "+=250px","left": "+=300px"}, "slow");
[Code].....
Where "SomeDiv" is part of "cpage" and "data" is a large amount of images. I would like to execute line 1 and then all the other lines simultaneously. It is currently executing all of the simultaneously.
JQuery :: Next Step Executed Before Image Attributes Available
Dec 28, 2010In the following code - Sometimes I get the correct image width and sometimes I get an image width that is ZERO. How do I make sure the loaded image attributes are there before I access them. Odd thing is if I click the same thumbnail twice I always get the width. If I click a thumbnail once I may get the width this time BUT when I refresh I may get a ZERO width.
Here is the code...
$(document).ready(function() {
$('#gallery a').click(function(evt) {
evt.preventDefault();
var oldImage = $('#photoBox img'); // Selects the current image
var newImage = new Image(); // Create a new image
var imagePath = $(this).attr('href'); // get the path to the image file to load that was clicked - via its href attr name
newImage.src = imagePath;// Set the newIamge.src to file name or Path
if (newImage.width < 600) // If the width is less than 600 calculate a new margin to center the new image {
var newMargin = (620 - newImage.width) / 2;
var newHtml = $('<img src="' + imagePath + '">');
$('#photoBox').css('margin-left',newMargin);
$('#photoBox').css('width',newImage.width);
} else
// assume width is 600 {
var newHtml = $('<img src="' + imagePath + '">');
$('#photoBox').css('width',newImage.width);
$('#photoBox').css('margin',5);
} newHtml.hide(); // hide the newHtml before prepending will fade it in
oldImage.hide(); // hide the old image
$('#photoBox').prepend(newHtml); // prepend the newHtml
newHtml.fadeIn(1000,function() { }); // now fade it in
});});
JQuery :: Prevent Action To Be Executed Before It Starts?
Apr 27, 2010I am building a navigation which animates width on mouseover and revert it on mouseleave. That navigation also supports keypress/keydown actions, so it behaves like you hover with the mouse and additionally opens the submenu too. My problem is, when using the keydown (C) function, the menu opens up perfectly but when I mouseover then, it fires the 1. function and behaves like it should, it closes. I tried to stop that when just using keydown, but somehow I am stuck with it. Here comes the code:
$
(
function
()
[Code]....
JQuery :: Stop A Function/effect Being Executed?
Dec 6, 2009I'm using jQuery and i have an animation effect which is executed via two methods:-
method 1: clicking on a nav link.
method 2: manually scrolling past a specified point.
Now, since method 1 will make the page scroll to the relevant anchor, by it's nature, it will trigger method 2.
What i need is a way to prevent method 2 from executing if method 1 is in operation.
Jquery :: DOM After Load When The Callback Function Was Executed
Mar 26, 2010I have an unordered list with each LI having an onclick event of "changeTabContent". When the page loads, I trigger the active LI's click. On a click, first thing I do is remove the previous results, which are a UL living under the "li.active" element. Next, I move the "active" class to the LI that was pushed and off the old one. Next, I add a loading animation to the screen. Next I append a new UL to the new "li.active" and use the load() method to insert a bunch of LI's from a different page. onSuccess, I remove the loading animation. [note 1] Next, you'll see a hack I added, more on that in a minute... Last two steps are to add a "more" link to the bottom of the returned li's, if a link was passed into the function, and finally I remove a handful of LI's (excluding more link) so there are only "x" on the screen.
My #1 problem is that the more link is not showing up at times, and the cleanList function is not removing LI's. I believe the problem is that with the load being async, sometimes those last two steps are being hit, but there is no LI's in the DOM yet. You can see I tried to run a hack so the while loop will execute when there is no "ul" yet. [note 1] - I tried to add the final two steps into the load() callback, but the LI's were NEVER loaded in the DOM when the callback function was executed.
[Code]....
JQuery :: $.post() Callback Executed No Data Passed
Jun 24, 2009Here is my server side code:
Here is my javascript:
When i call alert(data), it says it is "undefined". i am new to jQuery, but this appears to mean that no data is being passed to the callback function even though i know the $.post() executed properly (the server side code is executing, and the other alert() tells me that it had a successful result and the callback is being made.
JQuery :: Script Doesn't Get Executed After The Page Loads?
Dec 13, 2011I am trying to use jquery to layout my form elements. I want to make sure that the script is executed after the whole page is loaded. So i put this script insinde my html file in the head section:
<script type="text/javascript">
$(window).load(function(){
var css_attr = {"float": "left" ,"width":180};
[code]....
Jquery :: Scroll To Selected DIV On Current Page Before Script Executed
Aug 20, 2011I'm trying to scroll/jmp to the #selected div on the current page before it runs the javascript below:
Code:
var hash = window.location.hash.substr(1);
var href = $('.workimg a').each(function(){
var href = $(this).attr('href');
if(hash==href.substr(0,href.length-5)){
var toLoad = hash+'.html #selected';
$('#selected').load(toLoad)
}});
$('.workimg a').click(function(e){
e.preventDefault();
var toLoad = $(this).attr('href')+' #selected';
$('#selected').slideUp(1200,loadContent);
$('#load').remove();
$('#work').append('<span id="load">LOADING...</span>');
$('#load').fadeIn('normal');
window.location.hash = $(this).attr('href');
function loadContent() {
$('#selected').load(toLoad,'',showNewContent)
} function showNewContent() {
$('#selected').css("opacity","0");
$('#selected').delay(50).animate({
opacity: 1,
height: 'toggle'
}, 1200, function() {
hideLoader();
});
} function hideLoader() {
$('#load').hide();
}});
How difficult would it be to do this?
Turn Asynch Callbacks Into Synchronous Flow?
Jul 16, 2009I need to do something unusual. Say a user is browsing my site, and before they navigate away, I need to perform some actions like logging them out, for which they would need some data from the server. On onunload, a SJAX request (AJAX with that parameter as false) is issued, code flow hangs, and when the result comes in, code flow resumes and does what it needs to. If AJAX were used, the script would unload and never get the callback. Ok. So that's what I want. The problem is that I'm dealing with something other than an XMLHttpRequest object, and I can't simply supply a false parameter to the request function. I'm looking for some way to wrap an asynchronous routine of this object into a synchronous one. If call var result = myobject.get(data_to_send), code flow here hangs WHILE myobject calls this funky XMLHttpRequest-like object in asynchronous mode, waits for the callback, the callback is called, and myobject returns the result. So code stops synchronously outside of myobject.get, but waits asynchronously inside.
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