JQuery :: Callback Not Invoked With JSON Response In 1.4.1?
Jan 30, 2010
I've been hitting a strange bug where callbacks are not invoked when a JSON response is returned from an AJAX call under jQuery 1.4.1. I just upgraded my app; this was working perfectly pre-1.4.
I do specify the return type as "json" when I invoke $.post . When a simple JSON string like "false" is returned, the callback is invoked. It seems to fail with more complex types, specifically with JSON objects, i.e., {"a":1, "b":5} .
If it helps, I'm running Firefox 3.5 on Ubuntu. In my test environment, the only installed extension is 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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Feb 26, 2011
How can I adequately parse a JSON response I'm getting from the server, which happens to be an array?
The array I'm getting back is actually this one:
[{"photo":{"created_at":"2011-02-26T18:40:00Z","id":5,"name":"Natalie_Portman.jpg","updated_at":"2011-02-26T18:40:00Z"}},{"photo":{"created_at":"2011-02-26T18:40:14Z","id":6,"name":"scarlett-johansson-.jpg","updated_at":"2011-02-26T18:40:14Z"}}]
I believe this one is valid JSON, but my attempts to parse it are always failing when I do it like this:
success:
function(data, textStatus, xhr)
{
var photos = jQuery.parseJSON(data);
alert(photos);
},
The above code displays 'null', and the documentation says a null occurs when the JSON isn't valid. so, what's going on ?
I need to know the codes to parse as well as access the values in the parsed response.
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Oct 9, 2009
I have a file upload form (see end of email) that I am am processing with jQuery so that it can be submitted via AJAX. When I click the submit button, the form sends as it should (I can see the submit went properly in the server logs). However, the response doesn't get handled properly. In the response, I get a file download dialog (firefox), although the page itself isn't replaced: "You have chosen to download
[Code]...
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Oct 8, 2010
I am using a json from a Google spreadsheet and a jquery plugin which is called throught this HTML line <ul id="example">.The thing is that when I dynamically append elements to the <ul id="example"> from within the JSON callback function, these are not recognized by the jquery plugin
Code:
<form>
<ul id="example">BLA BLA BLA</ul>
</form>
[code]....
If I insert an <ul id="example"> plus some <li> in the HTML code the plugin works perfect If I insert dynamically some <li> to the <ul id="example"> throught a javascrypt function before executing the callback (...json-in-script&callback=...) also work perfect.But when I insert dynamically the <li> elements within the callback function (in my case: cm_loadMapJSON) does not work well.
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Mar 28, 2011
I got a problem with a json response from an ajax request.
I have the following code :
Code:
And the called page (ajax_sous_famille.php) is giving me this result :
Code:
The info in the resulting string is correct, but here you can see the [ ] at the start and end of the line. It seems not to be a correct Json string and then it crashes my script !
I have another request like this which gives me the good format of resulting data (without the [ ]) and which works perfectly when i decode the Json string to display it.
The difference between the 2 requests is that the one which works returns only 1 array of values like
Code:
And the second one which doesn't work returns something like
Code:
Actually, all the records are coming from a database and in the case it doesn't work, i wanna get several results from this database.
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Jul 6, 2011
I am looking for a solution for many days: my callback - function works well in firefox 5, IE8, but not in safari, opera, IE7 etc. The function "checken" is not executed. There are no error messages in the debugger of safari or IE7.
var session_id = $.cookie("fe_typo_user");
function checken (nummer){
var elem = "#img" + nummer;
$(elem).attr('checked',true); }
var url = "refreshCheckboxes.php?id=" + session_id;
$.getJSON(url,function(data){
$.each(data.posts, function(i,data){
checken (data.number);
}); });
The response of the script:
{"posts": [{"number":"1325"},{"number":"1303"},{"number":"1302"}]}
html (example):
<input
type="checkbox"
id="img1325"
class="merkzettel"
name="merkzettel1325"
value="img_1325.jpg"
/>
You can test it here: [URL]. Activate some checkboxes, load another site and then go back to this site and the checkboxes you have selected, must be activated by the script.
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Nov 14, 2011
I have a json string/ javascript list that I would like to save in jcookies
[Code]...
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Jan 13, 2010
I have a feeling that the solution to my problem is stupidly simple, but crawling through Google has provided me with none.
I'm trying to handle the login process on one of my clients' site using the AJAX functionality provided by jQuery.
Here is the $.ajax() call in question:
$.ajax({
"cache": false,
"complete": function()
{
[Code]....
I have already set the Content-Type header of the response to application/json, which made no difference. I also tried text/html and text/plain, but in these cases Internet Explorer shows the JSON as HTML or plain text in the browser window... *sigh*
Googling also gave me the suggestion to just use text/plain and eval() the response myself, but I remember reading elsewhere that this is pretty unsafe. I am unsure on the specifics on this, though.
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Aug 10, 2009
How does wrapping a json response from the server in textarea tags?
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May 10, 2011
I'm using Malsup's jQuery Form Plugin and trying to return a json object:
$('form#new_form').live('submit', function(e) {
//e.preventDefault(); // <-- important
$(this).ajaxSubmit({[code]....
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Oct 12, 2010
I'm trying to assign the values from the JSON data returned when I run this code into an array that's outside the callback function. The data is multidimensional, and I have been able to use this data within the callback function. However I want to use it outside that function. i.e. the jsdata returned in the code below is to be used outside the function
Code:
$.getJSON('../fxns/status.php',function(jsdata){
//do some stuff with JSON data or pass to global variable[code]..........
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Oct 12, 2010
Currently using: version: 2.47 (04-SEP-2010)
If I have iframe: true, my JSON response back is always:
<head></head><body>{"WEBSITE_URL":"test","ASSETTYPE_ID":0.0,"ASSET_RESULT":{"ASSET_ID":9,"ERROR":false},"ASSETTYPE":"link","NAME":"test","DESCRIPTION":"test"}</body>
Was this done for a specific reason (note the Head/Body tags)? Is there a safe way of parsing this JSON request out? Am I doing something wrong?
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Nov 17, 2011
I want to access a web service and get the response in json using javascript. The web services can respond in json and gives me a table of records with a specific campus. I input the campus code in the text box and create the url. Now, I want to get the response in json and I'm really stuck.
<FORM NAME="myform" ACTION="" METHOD="GET">Enter something in the box: <BR>
<INPUT TYPE="text" NAME="inputbox" VALUE=""><P>
<INPUT TYPE="button" NAME="button" Value="Click" onClick="loadurl(this.form)">
</FORM>
[Code]....
From the information search process: I know I have to change the HTTP Header accept and use application/json and probably use JSONRequest.get()
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Mar 18, 2009
I'm trying to create a "Books I'm Reading" widget using the Readernaut API. I'm using JSON with a callback. This is a portion of what the JSON URL returns:
Code JavaScript:
parseResponse(
{
"version": "1.0", [code]...
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Feb 15, 2011
I am using ajax to process a url. The result echoed back is
ok=true how can I convert that to json format so I can read that back in?
I can't edit how the response comes to me.
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Aug 19, 2010
I'm having troubles with an existing J2EE application (which uses Dojo) and in which I'm gradually introducing jQuery. The specific issue is with the malsup Form plugin and the JSON returned from a form submission: the error callback is always called, regardless of what happens on the server side, and the error is always "parsererror". I'm using jQuery 1.4.2 and the 2.45 version of the malsup Form plugin.
For example, given the following code:
$(document).ready(function() {
var options = {
dataType: 'json',[code]....
the server receives the submission and handles it without errors, then in the browser I always get the same alert from the processAddressEditSubmitError() function, with an "Invalid JSON" message:
pStatus=parsererror
pErrorText=Invalid JSON: {"nickname":"trytrez","success":"success"}
However, the JSON looks OK for me (and http:[url]...agrees that it is valid).
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Oct 3, 2011
I'm trying to get a return of
[
["red","green","blue"]
,["blue","red","green"]
[code]....
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Jul 10, 2010
I'm having a tough time getting at the values I want in this ajax response. Here is the response
[Code]...
I'm trying to get the value of the "site_id" and the "display_name" column but I can't get it right.
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May 17, 2010
I have an ajax post which returns a large html response. It is getting truncated at 98784 characters everytime. Is there a limit to a response size or a way around this?
Using: IE7
jQuery 1.4.2
jQuery UI 1.8.1
Here is my ajax call:
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Jan 5, 2011
I want that whenever an HTML or its inner HTML is clicked then a function is invoked. For this,I am using Multiple selector with Child selector and the method is invoked twice. Here is the code that I am using.
[Code]...
How to replicate scenario?1. Click on "Text 1" and you will get the popup only once.2. Now click on "Text 2" or "SPAN text" and you will get alert popup twice. I want that if user clicks anything inside <div id="myDIV" style="background-color:Red;width:200px;">, event/alert to be invoked only once.</div></form>
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Apr 13, 2010
I use the getJSON request to fill a select (with cities names) after the user have choosen his region.
I paste some code:
The problem is that callback is never called. I used firebug and i have seen that when i change region the getJSON function is called and my script (python) return this JSON:
Why my callback is not called? I can't even get the alert ('callback time!'). I thinked that my json could be broken, but firebug net console read and parse it very well, so i think is valid JSON.
I also tried to split up the function declaration from the getJSON request, but it's no use.
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Sep 4, 2009
Anyone familiar with this plugin?The docs say that it supportscolspans but it doesn't appear to do so.The script has acheckCellColSpan function defined but it is never invoked.I really
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Oct 12, 2010
I have the following javascript
<input type="button" value="Button1" onClick="XYZ();">
<script>
function PQR()
[code]....
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Nov 10, 2010
I have created the following text input field:
<form name="xyz">
<input type="text" name="myText" size="30"
value="Initial text"
[code]....
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Dec 22, 2010
Quick question. (I tried to use firebug but have no idea how to do it correctly)I have got some button at page. After click it triggers some function. How to exactly find out what is the name of this function and which library (file) loading it.
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