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Get JSON response using jQuery.ajax request to an appengine URL?

I tried to get response data using ajax from the below url
http://recipesid.appspot.com/api.user?method=user.query&email=dam.le#anttek.com
But it will not run anyway.
Help me to solve the issue
$.ajax({
type: "GET", //rest Type
dataType: 'jsonp', //mispelled
url: "http://recipesid.appspot.com/api.user?method=user.query&email=dam.le#anttek.com",
async: false,
contentType: "application/json; charset=UTF-8",
success: function (msg) {
alert(msg);
},
error:
function(data){
alert("error");
} });
Thanks in advance !!

Thanks for all answers. but i got a solution.
I must allow "Access-Control-Allow-Origin" in my google app engine.

JQuery AJAX call, IE9 issues with JSON

JSFiddle: http://jsfiddle.net/D2s2M/1/
I cannot figure out why this does not work in IE9. I've seen other questions here on Stack with similar issues, none of which have solutions that seem fix my problem.
This issue is specific to IE9, it does work in FF and Chrome. However, I am seeing some oddities in Chrome that do not make sense: if I append the contentType:'application/json' inside of the attributes, it breaks functionality inside of Chrome.
Here is the code that is in fiddle:
$('document').ready(function(){
$.ajax({
dataType: 'json',
type:'GET',
url: 'https://freegeoip.net/json/?callback=',
//contentType: 'application/json',
success: function(response, status, xhr){
var ct = xhr.getResponseHeader("content-type") || "";
$('#text').text(ct);
},
error: function(a,b,c) {
$('#text').text('Error: '+' '+b+' '+c);
},
timeout: 3000
});
});
Thanks

Change
dataType: 'json',
to
dataType: 'jsonp',

Solution: http://jsfiddle.net/D2s2M/2/
I'm not precisely sure why this cross-domain issue was IE specific nevertheless, JSONP did lead to resolving the issue.
The service I'm using does support JSONP, in the url there is a querystring variable to specify the name of the callback you wish to use. (JSONP requires that the data either be wrapped in a callback inside of the file itself, or set and passed an object inside of the JSON file.. this is required because JSONP loads everything in the head of the DOM to bypass cross-domain restrictions).
Revised Code:
$('document').ready(function(){
$.ajax({
dataType: 'jsonp',
type:'GET',
url: 'https://freegeoip.net/json/?callback=func',
contentType: 'application/json',
async: false,
jsonpCallback: 'func',
success: function(data){
console.log(data);
},
error: function(a,b,c) {
$('#text').text('Error: '+' '+b+' '+c);
},
timeout: 3000
});
});

simple REST call from Javascript

I am trying to call my service from here
http://diningphilospher.azurewebsites.net/api/dining
using below javascript,
$.ajax(
{
type: "GET",
dataType: "json",
url: "http://diningphilospher.azurewebsites.net/api/dining/",
success: function (data)
{
alert(data);
}
});
But I am getting error relating cross origin. I see people suggest using JSONP but I guess my server does not support JSONP. I studied CORS and could not understand the head or tail of it. I would like to know the way around to read the JSON that sits in different domain.

I hope this should work:
$.ajax(
{
type: "GET",
dataType: "jsonp",
url: "http://diningphilospher.azurewebsites.net/api/dining/",
success: function (data)
{
alert(data);
}
});
Or just add/append ?callback=? along with your cross-domain url.

How can I determine the final link of url shortned link without loading within the page?

I have links of messages coming in, say in an email message body. The issue right now is I want to click on the content and be able to display the unwrapped link in the right message pane (I use jQuery).
I am using jQuery and figured that using AJAX to call another PHP script to send the requests to bit.ly, etc. would work. I am not 100% sure how to do this.
The main issue is that some of these links are 2-3 times shortened as Twitter has their own automatic shortner. Any help on this would be appreciated.
Thanks.

You could use a service called LongURL. The API call in jQuery would look something like this:
$.ajax({
url: 'http://api.longurl.org/v2/expand?format=json&url=http%3A%2F%2Fbit.ly%2Fv20RLs',
dataType: 'jsonp',
method: 'get',
success: function(response) {
alert(response['long-url']);
}
});
or
$.ajax({
url: 'http://api.longurl.org/v2/expand',
data: {
format: 'json',
url: 'http://bit.ly/v20RLs'
},
dataType: 'jsonp',
method: 'get',
success: function(response) {
alert(response['long-url']);
}
});

Using same callback for two ajax() request yields "parsererror"

So, I've been battling with Javascript for a little while now and I have a weird error which is probably something simple. I have an ajax request like so:
$.ajax({
url: 'http://www.hahaha.com/api/v3/acts',
crossDomain: true,
jsonpCallback: 'handlejson',
async: false,
jsonp: 'callback',
dataType: 'jsonp',
type: 'GET',
success: handleActs,
error: handleError
});
Which works fine and calls the callback with no problems. Now, if I add this request directly underneath:
$.ajax({
url: 'http://www.hahaha.com/api/v3/performances',
crossDomain: true,
async: false,
jsonpCallback: 'handlejson',
jsonp: 'callback',
dataType: 'jsonp',
type: 'GET',
success: handlePerformances,
error: handleError
});
I get a "parsererror" on the first request and the second one succeeds. Anyone have any ideas as to why it's doing this? Can a jsonpCallback only have one request called on it?

I don't think it works to have two AJAX calls referring to the same jsonpCallback - I think jQuery puts a callback function in the global namespace, then removes it when it's called - so it won't be around for the second set of loaded data. I wouldn't have thought this would matter with async set to false, but it looks like it does.
At first I couldn't figure out why you were setting jsonpCallback at all, but testing seems to indicate that the API you're using strips anything other than [a-z] from the callback name :(. So you might try this with jsonpCallback set to 'handlejsona' in the first call and 'handlejsonb' in the second call.
This approach seems to work here: http://jsfiddle.net/nrabinowitz/H7zYt/