Capture HTTP 401 with Angular.js interceptor

Question

I\'d like to implement authentication on a single page web app with Angular.js. The official Angular documentation recommends the using of interceptors:

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Answer 1

in app config block:

var interceptor = ['$rootScope', '$q', "Base64", function(scope, $q, Base64) {
  function success(response) {
    return response;
  }

  function error(response) {
    var status = response.status;
    if (status == 401) {
      //AuthFactory.clearUser();
      window.location = "/account/login?redirectUrl=" + Base64.encode(document.URL);
      return;
    }
    // otherwise
    return $q.reject(response);
  }
  return function(promise) {
    return promise.then(success, error);
  }
}];