angularjs model.service vs provider vs factory?

<!DOCTYPE html>
<html ng-app="app">
<head>
    <script src="http://cdnjs.cloudflare.com/ajax/libs/angular.js/1.0.1/angular.min.js"></script>
    <meta charset=utf-8 />
    <title>JS Bin</title>
</head>
<body ng-controller="MyCtrl">
    {{serviceOutput}}
    <br/><br/>
    {{factoryOutput}}
    <br/><br/>
    {{providerOutput}}

    <script>

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

        var MyFunc = function() {

            this.name = "default name";

            this.$get = function() {
                this.name = "new name"
                return "Hello from MyFunc.$get(). this.name = " + this.name;
            };

            return "Hello from MyFunc(). this.name = " + this.name;
        };

        // returns the actual function
        app.service( myService, MyFunc );

        // returns the function‘s return value
        app.factory( myFactory, MyFunc );

        // returns the output of the function‘s $get function
        app.provider( myProv, MyFunc );

        function MyCtrl( $scope, myService, myFactory, myProv ) {

            $scope.serviceOutput = "myService = " + myService;
            $scope.factoryOutput = "myFactory = " + myFactory;
            $scope.providerOutput = "myProvider = " + myProv;

        }

    </script>

</body>
</html>

生成结果:

myService = [object Object] 

myFactory = Hello from MyFunc(). this.name = default name 

myProvider = Hello from MyFunc.$get(). this.name = new name

 

app.factory扩展:

factory(‘AttendersService‘, function ($q, $http, $rootScope) {

  var service = {};
  var baseUrl = ‘https://itunes.apple.com/search?term=‘;
  var _artist = ‘‘;
  var _finalUrl = ‘‘;

  var makeUrl = function(){
    _artist = _artist.split(‘ ‘).join(‘+‘);
    _finalUrl = baseUrl + _artist + ‘&callback=JSON_CALLBACK‘
    return _finalUrl;
  }

  service.setArtist = function(artist){
    _artist = artist;
  }

  service.getArtist = function(){
    return _artist;
  }

  service.callItunes = function(){
    makeUrl();
    var deferred = $q.defer();
    $http({
      method: ‘JSONP‘,
      url: _finalUrl
    }).success(function(data){
      deferred.resolve(data);
    }).error(function(){
      deferred.reject(‘There was an error‘)
    })
    return deferred.promise;
  }

  return service;
}

controller 引用:
app.controller(‘myFactoryCtrl‘, function($scope, myFactory){
  $scope.data = {};
  $scope.updateArtist = function(){
    myFactory.setArtist($scope.data.artist);
  };

  $scope.submitArtist = function(){
    myFactory.callItunes()
      .then(function(data){
        $scope.data.artistData = data;
      }, function(data){
        alert(data);
      })
  }
});
 

 app.service扩展:

app.service(‘myService‘, function($http, $q){
  var baseUrl = ‘https://itunes.apple.com/search?term=‘;
  var _artist = ‘‘;
  var _finalUrl = ‘‘;

  var makeUrl = function(){
    _artist = _artist.split(‘ ‘).join(‘+‘);
    _finalUrl = baseUrl + _artist + ‘&callback=JSON_CALLBACK‘
    return _finalUrl;
  }

  this.setArtist = function(artist){
    _artist = artist;
  }

  this.getArtist = function(){
    return _artist;
  }

  this.callItunes = function(){
    makeUrl();
    var deferred = $q.defer();
    $http({
      method: ‘JSONP‘,
      url: _finalUrl
    }).success(function(data){
      deferred.resolve(data);
    }).error(function(){
      deferred.reject(‘There was an error‘)
    })
    return deferred.promise;
  }

});
conrroller 引用:
app.controller(
‘myServiceCtrl‘, function($scope, myService){ $scope.data = {}; $scope.updateArtist = function(){ myService.setArtist($scope.data.artist); }; $scope.submitArtist = function(){ myService.callItunes() .then(function(data){ $scope.data.artistData = data; }, function(data){ alert(data); }) } });

app.provider扩展:

app.provider(‘myProvider‘, function(){
  var baseUrl = ‘https://itunes.apple.com/search?term=‘;
  var _artist = ‘‘;
  var _finalUrl = ‘‘;

  //Going to set this property on the config function below
  this.thingFromConfig = ‘‘;

  var makeUrl = function(){
    _artist = _artist.split(‘ ‘).join(‘+‘);
    _finalUrl = baseUrl + _artist + ‘&callback=JSON_CALLBACK‘
    return _finalUrl;
  }

  this.$get = function($http, $q){
    return {
      callItunes: function(){
        makeUrl();
        var deferred = $q.defer();
        $http({
          method: ‘JSONP‘,
          url: _finalUrl
        }).success(function(data){
          deferred.resolve(data);
        }).error(function(){
          deferred.reject(‘There was an error‘)
        })
        return deferred.promise;
      },
      setArtist: function(artist){
        _artist = artist;
      },
      getArtist: function(){
        return _artist;
      },
      thingOnConfig: this.thingFromConfig
    }
  }
});


controller引用:

app.controller(‘myProviderCtrl‘, function($scope, myProvider){
  $scope.data = {};
  $scope.updateArtist = function(){
    myProvider.setArtist($scope.data.artist);
  };

  $scope.submitArtist = function(){
    myProvider.callItunes()
      .then(function(data){
        $scope.data.artistData = data;
      }, function(data){
        alert(data);
      })
  }

  $scope.data.thingFromConfig = myProvider.thingOnConfig;
});

 

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