Jquery :: DOM After Load When The Callback Function Was Executed
Mar 26, 2010
I 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.
I 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.
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.
I'm a jQuery novice and I think I've gotten myself in over my head here. I have a #Calculatebutton with a click function attached which, when clicked, iterates through a form and sends the users input values, via $_GET, to a php script called'prepsession.php'. Here the inputs are validated and sanitized, a session is started and some session variables are created using the form input values. If there are any errors I want error messages displayed beside the form. Everything works fine up to this point.
If this script runs ok without giving any errors I would like to fire another php script called'printsummary.php'which accesses the previously created session variables and inserts them into a div #PanelContent. The reason I am usingseparatephp scripts for this is that I would like to be able to print my data in various different ways so I have numerous php print scripts accessing the session variables.
Im 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.
I 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?.
I 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.
in this example: $(el).load('/data_url', function() { alert('loaded') } );
will the alert be called after the html fragment has been loaded into el and all its elements are available to access or is the callback just after the ajax call has finished ?
How you handle back button scenario in firefox browser. The problem is when i click browser back button , the javascript on load is not executed and page is rendered from cache.
but I need to do a beforeSend callback, to fade out the current content, wait until it is fully hidden, and only then fade in with the received ajax request. But doing this, for example, with .ajaxSend, the content loads much quicker, then fadeOut is complete.
I'm trying to load dynamically some content and I'd like to fire a function when all the newly added content (including images, iframes and scripts in it) are loaded:
var htmlStr='html string including images, iframes and scripts'; $("#contents").html(htmlStr).load(function(){ alert("all images, scripts and iframes are fully loaded, you can continue"); })
According tohttp:[url]....(at least how I understand it) this should work: Theloadevent is sent to an element when it and all sub-elements have been completely loaded. This event can be sent to any element associated with a URL,images, scripts, frames, iframes, and the windowobject.Unfortunatelly my function is never called. For the meantime I found a workaround:
var html=$('html string including images, iframes and scripts'); var elements=html.find("img,script,iframe,frame"); var loadCounter = elemets.length;[code]....
how can i write a function that accepts a callback function?[URL].. i want myFunction to load some data via(an unordored list actually) load method end then somehow to return the wrapped elements for the callback function, exactly like load() does.
I'm trying to do some animation designs. Basically where I'm stuck is I have a bunch of things I want to do, but not until the duration of the switchClass method is complete. Looking at the UI documentation site, there doesn't appear to be a callback ability. how I can make a callback on the switchClass?
I have some problem using the $.post function. I wrote a function that test if a username is already used in my database. That function must return true if the username is free and false in the other case. My problem is that I use the $.post function and I put the return true; and return false; in the callback function. So it's the callback function that returns true/false instead of my function !
Here is my code : function validateName(){ $.post("ajax_is_name_used.php", {name: $form_name.val()}, function(data) { if (data.success == 1) { $form_name.addClass("error"); return false; // Problem, we are in the callback function ! } else { return true; // Problem, we are in the callback function ! }}, "json");}
$("#scroll").hover(function(){ $(this).find(".front").stop().animate({ top:"184px"},500,function(){ $(this).find(".front").stop().animate({ top : "7px"}, 300); }); });
I try to make a scrolling picture. when mouse roll over the image with .front class will scroll down, but it has to come back after mouse roll out. the scroll down is working but I wrote a callback function, but it doesn't work.
html part <div id="scroll"> <a href="../images/big_html/babytracker_b.png"> <img src="../images/thumb_html/jukebox.jpg" /> <img src="../images/thumb_html/Tracker.jpg" class="front"/> </a> </div>
I'm trying to build a confirm dialog box. If found a nice plugin [URL] but the behavior is not like a normal confirm dialog box. You have to add a callback function to react on the ok/cancel buttons. Is it possible the simulate this behavior so I can have a function like this: function showConfirmation(title, text){ //this displays a jQuery Dialog form and returns true/false return myjQueryConfirm(title, text); }
I tried this with the plugin: function showConfirmation(title, text){ var res; jConfirm(title, text, function (r) { res = r;}); return res; } But after the jConfirm is executed, the function proceeds and immediately returns res which is not defined.
I'm trying to execute a simple JSON request using getJSON but I can't get a successful response. My code is below. If I run this I always receive an error. If I add "callback?" (making it JSONP) then I can see the correct results in Firebug but the call back function is never executed. function getResults(url) { var gptUrl = "[URL]"; $.getJSON(url, {f: "json"}, function() { alert("success"); }) .success(function() { alert("second success"); }) .error(function() { alert("error"); }) .complete(function() { alert("complete"); });}
