Callbacks : Make And Use Them?
May 31, 2009What is a callback function and how do we make and use them?
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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() 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:
[Code]...
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
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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.
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.
View 2 Replies View RelatedMy Animate() Callbacks Execute Before The Animation Is Finished?
Jun 10, 2009I'm animating a sliding panel but my callback executes right away when you click the slider link.This is the code:
Code:
$(document).ready(function(){
var stat = 0;[code]...
anything wrong with my animate function? (the callbacks are when it add/removes a class)
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.
Asynchronus Calls And Callbacks To Object Orientated Code
Jul 20, 2005This might be a bit tricky. I want to call a method of a class using the setTimeout code, ok, can do this like this:
var instance = this;
timerID = window.setTimeout( function() { instance.Method(); }, 1000);
Now I want to call a method a number of times from with the class and when they
have all finished I want a second method to be called, I don't want the methods
themselves to be altered, i.e. I want this to be generic.
Here was my idea:
var timerCounter = 0
function CallFunc(func, callbackFunc)
{
timerCounter--;
if(timerCounter == 0)
{
callbackFunc()
}
}
function DoAsyncRequest(func, callbackFunction)
{
timerCounter++;
return window.setTimeout( CallFunc(func, callbackFunction), 1);
}
You would call this using something like:
timerId = DoAsyncRequest(this.method(), this.method2());
How could I do this, tryed using eval to no avail. I just don't know the
language well enough yet.
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 :: Form Plugin - Reference To The Form In Callbacks?
Jul 26, 2007I needed access to the form that's being submitted in the options.success() function (in order to hide the form after successful submission). I ended up modifying line 222 in jquery.form.js. I added $form as the third argument for all callbacks, like so:
options.success = function(data, status) {
for (var i=0, max=callbacks.length; i < max; i++)
callbacks[i](data, status, $form); // added $form as third argument.
};
Is there a better way of accessing the form from the callbacks or would the plugin developer(s) consider adding this or another similar modification to the code?
JQuery :: Managing "return" In Callbacks?
Sep 8, 2010When JQuery initiates an action (e.g. an Ajax PUT) it sets up a callback to handle processing the event when the time dependent action completes. Since the callback operates as an independent thread, it cannot return to a calling routine via the "return" instruction. Is there a way to preserve the context somehow to return to a calling routine? Perhaps another type of callback event?
View 1 Replies View RelatedGoogle Maps API - Make A Map That Lets The User Click The Map To Make A Pin And Write A Description
Jan 27, 2010My objective is to make a map that lets the user click the map to make a pin and write a description. Like this [URL]
View 13 Replies View RelatedJQuery :: If Number Is Below 5.5 Make It Red - Otherwise Make It Green - Multiple Classes
Dec 8, 2011I have several classes named 'ratings_colored'. They all contain a number from 1 to 10. If the number is below 5.5, the number should become red. If not it should become green.
The code below works, but if the first .ratings_colored is higher than 5.5 it will make ALL the classes green. Even the numbers below 5.5! I tried using the 'this' but it didn't work either.
$(document).ready(function () {
Make A Default Empty Value And Force Users To Make A Decision?
Dec 2, 2009How Can i take this to make a default empty value and force users to make a decision?
<select id="preservetitletest"
name="titletest"
dojoType="$testWidget"
style="width:50%;font-family:Courier;"
[Code]....
Clicking A Button To Make Something Appear, And Then Clicking It Again To Make It Dis?
Mar 4, 2010so I have a button that makes a table appear absolutely(dynamically), and I was wondering how would I go about making it disappear once I made it appear.
View 3 Replies View RelatedHow Can I Make A Poll
Jul 20, 2005Does anybody know how i make a script to make a poll? I mean a small poll
when you can choose yes or no?
Make Changes To An XML File
May 4, 2011I am trying to make changes (add/remove nodes, insert text) to an XML file using JavaScript. So far I can display the content of the XML file, but when I try to add/remove nodes it does not seem to work. Here is my code for adding nodes(just followed an example from w3s):
[Code]...
Make Editable H3 Tag
May 20, 2010i have some mysql articles and i would like to change the title when it displayed on the page by clicking on the h3 tag i have got the articles displaying on a while loop so i need something that would work with that i was thing of somehow changing the h3 tag to a input tag
View 3 Replies View RelatedMake Editable All Obj With An Id Not Just One
Feb 15, 2009I've got this prototype funtion
function makeEditable(id){
Event.observe(id, 'click', function(){edit($(id))}, false);
Event.observe(id, 'mouseover', function(){showAsEditable($(id))}, false);
Event.observe(id, 'mouseout', function(){showAsEditable($(id), true)}, false);
}
that make editable a <p id=xxx> with an speial id I want to modify it to makeditable any of <p> with that id if it's been clicked and also i use this function on a button how I can avoid this function from multiple executing by multiple clicking by user?
Cannot Make Pop-ups Non-resizable
Feb 20, 2009I have a function that opens a popup and I have told it not make the popup resizable but all browsers seem to ignore it and make it resizable anyway. This is the code
function openflvpopup(popurl){
window.open('FLV/play.php?file=' + popurl + '.flv', '', 'height=500px,width=550px,left=150px,top=150px,resizable=0')
}
I have probably made a silly mistake but I have checked several tutorial website to make sure I write it in the syntax that they do. I can not see any mistakes.
Make An 'on' 'off' Switch
Mar 23, 2009I'm trying to make an 'on' 'off' switch
the idea is for imgA to 'toggle' with imgB onMouseDown (onclick is used to call a function)
I can get the image to swap once but not back again. I have no idea if the way i'm attempting it is even close.
<script type="text/javascript">
function imgswap(){
if ( )
{
[Code]....
Make Rows Not Appear When Certain Row Value?
Jul 2, 2009The issue I am having is how to modify the following html/javascript to show only rows that do not have a certain value. For example I have 2 rows with the following values:
Row1Column1 Row1Column2 Row1Column3
Row2Column1 Row2Column2 Row2Column3
But I do not want display any row when a value in Column3 equals
Row2Column3. Therefore in this example I will display Row1 but not Row2. The following code displays a table of rows and is running in a servlet container using tomcat, hence the predefined tags of ${.....}. I know this forum is not for server-side programming but this issue really a html and javascript issue. The issue I would liked answered is how to modify the html/javascript so when a ${wfinfo_task_role} value of "cdm" is be displayed then the row will not be displayed in the table.
[Code]...