JQuery :: Callback Function Required To Make Ajax Call
Jul 15, 2010
On a project I got stuck on this "problem". When you make a json (ajax) call. You also need a callback function. Which means I have to call the next $.getJSON within that callback function to read the next portion of data. In my opinion this is not very readable code...What I want is a nice and readable piece of code. Where you could just write it like this:
var data1 = $.getJSON(..);
var data2 =$.getJSON(..);
I've found a solution here: [URL] (explains my problem perfectly). But it's not compatible with the getJSON story. Is there already a possibility to do this with the jquery library?
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Aug 1, 2011
I'm using the color animatepluginto animate some colors.I'm animating the width on hover and using .stop() before each animation.when i click my paragraph it animates the color of the div back and forth with a callback function to reset the background color in case .stop() freezes the color. But the callback function is not called.try it here:[URL]Now I want to always call the callback function.
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Sep 6, 2010
Why function aSuccess don't work
<?php
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Mar 16, 2011
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.
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Aug 19, 2009
I have Javascript code that looks like this:
var data1;
$.post('save_search.php', formData, function(data) {
data1 = data;
});
jsonData = eval('(' + data1 + ')');
if (jsonData.return_status.search("successful") > -1)
$('#msg_div').html("<font color=red>Search was saved</font>");
else
$('#msg_div').html("<font color=red>Search was not saved. Try saving again.</font>");
"data1" comes up as undefined in the statement
jsonData = eval('(' + data1 + ')');
Even though "data" is a perfectly correct JSON string *inside* the callback function! I can put the eval statement inside the callback function and it will form a good JSON object, like this:
jsonData = eval('(' + data + ')');
I'm simply trying to get my Ajax response data to the outside of my callback function so I can use it in other Javascript code. I've never seen an ordinary function behave this way.
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Jun 11, 2011
I have a real perplexing issue. In two separate "projects" I had code that displayed checkboxes - when clicked, they would fetch information from a db and display it in the div below. I had code that displayed a jquery date-picker - when clicked, it would fetch information from a db and display it in the div below. My issue comes with this:
[Code]...
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Dec 2, 2010
How know that for ajax call to different domain applies the same domain policy, but is there anyway to get around this using the cluetip plugin?
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Oct 12, 2010
I am using jquery for getting ajax responses from server side functions.
I am in a situation where I need to make two ajax calls one after another and the second one is dependent on the response of the first one.
I have tried to use a code which is similar to this one?
$.ajax({
type: 'GET',
url: 'myURL',
success: function(data)
[Code]....
Is it possible to get two have two ajax calls , one dependent on the other?
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May 3, 2011
What isthe problem with these Ajax request? It doesn't forward to success action? code...
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Mar 4, 2009
I have been trying to figure this out for a few days now and have finally come to the point where I think I got it but may just need a little push to get what I want.
Heres the situation:
I have this function that uses ajax to access a database and returns the results in the responseText. That part is working fine, I have confirmed that the responseText contains the information that I need
**************code*****************************************
//new ajax already created and assigned to the variable xmlhttp//
var response_recieved = "some data";
function get_answer(Table_Name, Field_Name, Data_Type) {
[Code]....
As evidence by my posting, this is not working correctly. The variable response_recieved is coming up undefined outside of the callback function assigned to the onreadystatechangeproperty.
Based on the information that I have gathered online from various forums, I believe this issue has to deal with a problem with closure in the callback function assigned to onreadystatechange property. I don't think it has any. Based on the fact that there is no anonymous function in that function. But my problem is that the call back function is anonymous itself... I think???
get the variable response_recieved to survive outside of this function.
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Oct 9, 2011
I'm trying to call the same Ajax get PHP from two different elements Onclick. The second one isn't working.
Index.js
Code:
function getproduct(p){
if(p==' '){
document.getElementById('f1').innerHTML=' ';
[Code]....
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Sep 22, 2010
I have 2 files, index.php and test.php
index.php:
Code:
<script type="text/javascript" language="javascript">
$(document).ready(function(){ setInterval(function(){
$( function()
{
[Code].....
I want to call function hi(); from test.php when the ajax call in index.php is successful.
I am getting hi(); is undefined.
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May 1, 2009
This is what I cam currently doing code...
Basically I want to execute getexchrate() after the ajax call is complete. etexchrate() is already defined.
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Aug 30, 2010
I am having a couple problems with what I am guessing is sequencing. I have several different events that perform a task and then refresh a portion of the screen using this code snippet: function RefreshComments(sID)
[Code]...
So this comes down to finding away to fire the javascript function only after the JQuery function has finished updating the HTML property of the DIV tag. I'm having a similar problem with a .post() command, and I expect whatever the solution is to this problem can be used to resolve the other as well.
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Jun 29, 2011
Clearly I am invoking this wrong.
[Code]...
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Feb 24, 2010
At the moment I have a link in a div that targets an ASP page to remove an item from the database.
<a class="small" href="/products.asp?Action=RemoveProduct&ID=<%=(rsCartItems.Fields.Item("ID").Value)%>">remove</a>
What I could like to do is use JQuery .click and .ajaxmethods but the only thing I am unsure of is hot to get the ID of the a href tag containing the unique item ID that relates to the db record. Can I use this.id?
<script>
$(document).ready(function
(){
$(".removecartitem"
[Code]....
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Mar 11, 2010
I'm trying to pass parameters using the jquery's ajax function, but I end up with a "function undefined" error message when I try.
I had trouble finding simple examples of ajax passing parameters with jquery.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
[Code].....
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May 18, 2010
I have the following code:
$(document).ready(function(){
$('#link').click(function() {
alert('Clicked!');
$('#content').load('dialogs/load/content', function() {});
});
});
The link is a normal link that is not dynamically created. The alert works. I know the problem is not the Ajax call because this works just fine:
$(document).ready(function(){
$('#content').load('dialogs/load/content', function() {});
$('#link').click(function() {
[Code]....
It only breaks when located inside the click handler. It does not return response headers or a response. Is there something about event handlers and ajax that I'm missing?
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Jun 30, 2011
i have a group of textbox and i have to validate them on button click.First validation is required field validation i.e., it iscompulsoryto provide input and, Second validation is range validation .e.g., textbox can only contain numeric values between 0-9. How can iachievethis functionality using jQuery ?
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Oct 15, 2011
big fan -- first time poster. I've been learning javascript and jquery on the fly so bear with me if I seem to lack understanding of what may be semantic basics.
Anyway, I'm building a mobile app using phonegap. One page grabs data for a table from ajax, and each table element has a delete button in one of the cells. In short: the clicks aren't working. I put the alert in to test, and no dice. I'm not asking for help on the internals, I'm just stumped on why the function isn't being activated,
[Code]...
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Oct 21, 2010
When using .ajax, and when before I receive any data back from the server, I would like to call a function that could display some type of 'thinking' icon. In looking a the documentation I see there is a 'success', for when after receiving data back successfully, and an 'error', for obviously when something bad happens and need to error gracefully. I do not see something like a 'beforeSuccess' function that would allow me to specify, for example, to overlay a 'thinking icon' on top of a <div> after request is sent to the server and before I get any data back. I would assume this is a pretty standard necessity in ajax applications, and probably missing something here. How exactly is this done using the .ajax methods?
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Feb 10, 2011
I want to use an image map for something unique. The image would have about 10 to 15 (religious) symbols. When the user clicks on a particular symbol it will search the site for a few strings relating to that symbol. For example: Symbol 1 would be a cross when clicked it search the site for "christ, crucifix, christianity". I am sure I can make the image map but how do I make the image map call a function instead of a link.
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Oct 11, 2011
I've got an array of names, and one ID. I need to run an ajax call using the ID and each lastname, until I get a successful hit on the ajax call. I can't quite figure out how to determine if the function that runs the ajax call has succeeded or not, it always returns false for me... Here's the code for the loop:
[Code]...
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Feb 21, 2002
I'm trying to build a cascading menu in javascript I got as far as this ; all I want to do is Re-draw the whole page when the link is clicked however I get an object required message the second time the link is clicked (I,m using IE 5) Code:
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Aug 15, 2006
How to call a function that has a string variable as the parameter
during http.onreadystatechange event is met? I tried this
http.onreadystatechange = MyFunction (stringVar);
but it gave me an error message: "Type mismatch".
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May 29, 2006
i have all my functions in a java class file.... how do i call the function using ajax? does anyone know?
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