Using $http.jsonp to bypass browser's CORS policy.

angular1-jsonp.js

(function() {
  'use strict';
   // This is how you would do it using angular 1 & http service
  var app = angular.module('your.module', []);

  app.factory('Service', Service);
  
  Service.$inject = ['$http', '$sce'];
  
  function Service($http, $sce) {
    var service = {
      fetchSomething: fetchSomething,
    };
    return service;
    
    var fetchSomething = function(callbackName) {
      var url = `http://localhost:3000/test?callback=${callbackName}`;  //Absolute or relative URL
      var trusted = $sce.trustAsResourceUrl(url);
      return $http.jsonp(trusted, {jsonpCallbackParam: callbackName });
    }  
  }  
})();