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angular.js - angularjs在两个controller之间传值,使用factory,为何不成功?

希望通过服务在两个controller传值,代码如下:


但是并没有成功。。。


这单括号是什么鬼?


控制台只能得到setter 却没有getter
请问这是为什么

曾经蜡笔没有小新曾经蜡笔没有小新2744 days ago695

reply all(1)I'll reply

  • 曾经蜡笔没有小新

    曾经蜡笔没有小新2017-05-15 17:02:22

    1. That single bracket is nothing, it is an empty object. Because you set it in the service myData{},而且,你的getCtrl这个controller一开始就去获取了这个值,所以说在页面上会显示{}

    2. The value when you click add按钮的时候,其实已经把input里面的值存入了myData中,只是你的getCtrl不会去获取而已,简单一点,你可以在getCtrl中也设置一个按钮来点击获取myData;

    3. After your _getter函数中,你的这一句console.log..放在了return statement, no matter how you execute it, there will be no output.

    I modified it slightly according to your code, you can take a look.

    <p ng-app="myApp">
        <p ng-controller="inputCtrl">
            <input type="text" ng-model="value" />
            <button ng-click="setValue()">Add</button>
        </p>
        <p ng-controller="getCtrl">
            <p>{{ value }}</p>
            <button ng-click="getValue()">Get</button>
        </p>
    </p>
    angular.module('myApp', [])
        .factory('factory_getValue', function () {
            var myData = {};
    
            function _getter() {
                console.log(myData);
                return myData;
            }
    
            function _setter( a ) {
                myData = a;
            }
    
            return {
                getter: _getter,
                setter: _setter
            };
        })
        .controller('inputCtrl', function ( $scope, factory_getValue ) {
            $scope.setValue = function () {
                factory_getValue.setter($scope.value);
            }
        })
        .controller('getCtrl', function ( $scope, factory_getValue ) {
            $scope.getValue = function () {
                // 点击按钮获取myData的值
                $scope.value = factory_getValue.getter();
            }
        });

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