服务和工厂之间的区别[重复]答案

【问题标题】：Difference between service and factory [duplicate]服务和工厂之间的区别[重复]
【发布时间】：2017-07-10 20:07:54
【问题描述】：

我们如何将以下代码转换/更改为工厂而不是服务

在工厂和服务这两者中实施的更好方法是什么，请提出建议。我是 AngularJs 的新手，所以请帮我解决这个问题

<html>

    <head>
        <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>

    </head>

<body ng-app="app">


    <div ng-controller="CalculatorController">
        Enter a number:
        <input type="number" ng-model="number" />
        <button ng-click="doSquare()">X<sup>2</sup></button>
        <button ng-click="doCube()">X<sup>3</sup></button>

        <div>Answer: {{answer}}</div>
    </div>



    <script>

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

            app.service('MathService', function() {
                this.add = function(a, b) { return a + b };

                this.subtract = function(a, b) { return a - b };

                this.multiply = function(a, b) { return a * b };

                this.divide = function(a, b) { return a / b };
            });

            app.service('CalculatorService', function(MathService){

                this.square = function(a) { return MathService.multiply(a,a); };
                this.cube = function(a) { return MathService.multiply(a, MathService.multiply(a,a)); };

            });

            app.controller('CalculatorController', function($scope, CalculatorService) {

                $scope.doSquare = function() {
                    $scope.answer = CalculatorService.square($scope.number);
                }

                $scope.doCube = function() {
                    $scope.answer = CalculatorService.cube($scope.number);
                }
            });

    </script>

</body>
</html>

【问题讨论】：

Service VS provider VS factory in AngularJS
检查这个链接它会清除你所有的困惑-stackoverflow.com/questions/13762228/…
据我所知，这个是最好的。请参考。 stackoverflow.com/questions/23074875/…

标签： angularjs

【解决方案1】：

都是单身
它们的书写方式不同
我的人员选择是使用服务

【讨论】：

【解决方案2】：

var app = angular.module('app', []);
                app.factory('MathService', function(){
                    return {
                        multiply : function(a, b){
                            return a*b;
                        }
                    }
                });

                app.factory('CalculateResult', ['MathService', function(MathService){
                        return {
                            square : function(a){
                                return MathService.multiply(a,a);
                            },

                            cube : function(a){
                                return MathService.multiply(a, MathService.multiply(a,a));
                            }
                        }
                }]);

                app.controller('CalculatorController', ['CalculateResult', '$scope', function(CalculateResult, $scope){

                    $scope.doSquare = function(){
                        $scope.answer = CalculateResult.square($scope.number);
                    };

                    $scope.doCube = function(){
                        $scope.answer = CalculateResult.cube($scope.number);
                    }

                }]);

谢谢支持

【讨论】：