var request = {
  post: function() {
    var errorCallback = {
      error: function(f) {
        this.fun = f;
      },
      fun: function(data) {}
    };
    successCallback = {
      success: function(f) {
        return this.fun = f, console.log(this.fun), errorCallback;
      },
      fun: function(data) {
        console.log(data)
      }
    };
    returnData = {
      wsscat: "hello"
    };
    //成功
    //var a = successCallback.fun(returnData);
    a = successCallback.fun;
    setTimeout('a(returnData)', 1000)
    return successCallback;
    }
    }
    request.post().success(function(data) {
      console.log("123");
      console.log(data);
    })
    console.log("wscat's test");

errorCallback和successCallback 

returnData = {
      wsscat: "hello"
    };

request.post().success() 

console.log("wscat's test"); 

$http.get(url).success(function(data, status, headers, config) {
//code
})

successCallback.fun(returnData); 
errorCallback.fun(returnData); 

$http.get(url).success(function(data, status, headers, config) {
//code
})

.service('Request', [
  '$http',
  '$cookies',
  '$rootScope',
  '$window',
  '$cookieStore',
  '$location',
  function($http, $cookies, $rootScope, $window, $cookieStore, $location) {
    var request = {
      post: function(api, map, successCallback) {
        $rootScope.dataLoadCount++;
        $rootScope.isLoading = $rootScope.dataLoadCount != 0;
        var url = '../test.php""
          };
          errorCallback.fun(returnData);
        });
        return successCallback;
      }
    }
    return request;
  }
])