"An issue with Angular Http Get causing Status 0 to be consistently returned when using ng

I've been attempting to make this function properly. The concept is simple: click the tag, which then triggers a REST service call that returns a JSON result. I extract the country name from the response just for testing purposes. I'm currently utilizing AngularJS.

Every time I click, it shows a Status of 0. If you'd like to take a look at the code, here's the Plunker link: http://plnkr.co/edit/k3Z6Ufi734oYE4ciVJs8

The HTML Code: It's quite straightforward - simply invoke the GetInfo function using ng-click.

<!DOCTYPE html>
<html ng-app="mainModule">
<!--http://plnkr.co/edit/k3Z6Ufi734oYE4ciVJs8-->
  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>    
    <link href="style.css" rel="stylesheet" />
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
    <p>Hello {{name}}!</p>

        <div><b ng-click="GetInfo()">Click Me</b></div>

    <b>{{AdditionalInfo.geobytescountry}}</b>
  </body>

</html>

This section pertains to the Angular backend system.

var app = angular.module('mainModule', []);

app.controller('MainCtrl', function($scope, $http) {
  $scope.name = 'World';

  var cityDetailsUrl = "http://gd.geobytes.com/GetCityDetails?callback=?&fqcn=new%20york,%20NY,%20United%20States";

   $scope.AdditionalInfo =  {};

   $scope.GetInfo =  function ()
   {
       $http.get(cityDetailsUrl)
              .success(function(data, status, header, config){
                      console.log('ok'); 
                      $scope.AdditionalInfo = data; 
                      console.log(data);})
              .error(function(data, status, header, config){
                      console.log('error'); 
                      $scope.AdditionalInfo = data; 
                      console.log(status);});
   }


});

The provided hyperlink should prompt a JSON response, as I experimented with it in a web browser. It should be something akin to "geobytesinternet":"US","geobytescountry":"United States"

Answer №1

Upon reviewing your Plunker demonstration, it appears there are two distinct issues at play.

The first issue arises from the use of JSONP, necessitating the use of $http.jsonp over $http.get. Simply using $http.get will result in failure due to violations of the same origin policy.

Additionally, it is important to note that the URL should include the attribute callback=JSON_CALLBACK instead of callback=? for JSONP functionality to operate correctly. Once these adjustments are made, the code should function as intended.

To see an updated version of the Plunker with the necessary modifications, please visit: http://plnkr.co/edit/SYB9TI29MOHfNPw1jjQT

Answer №2

Located it. As the server is sending jsonp, not JSON, adjust your URL to include JSON_CALLBACK like this:

http://gd.geobytes.com/GetCityDetails?callback=JSON_CALLBACK&fqcn=new%20york,%20NY,%20United%20States

Also, utilize $http.jsonp instead of $http.get. Check out the updated Plunker.

http://plnkr.co/edit/Jcs4rQHbINZyLwEN3VeR?p=preview

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