有许多方法可以在控制器之间共享数据

使用服务 使用美元的状态。去服务 使用stateparams 使用rootscope

各方法说明:

I am not going to explain as its already explained by someone using $state.go $state.go('book.name', {Name: 'XYZ'}); // then get parameter out of URL $state.params.Name; $stateparam works in a similar way to $state.go, you pass it as object from sender controller and collect in receiver controller using stateparam using $rootscope (a) sending data from child to parent controller $scope.Save(Obj,function(data) { $scope.$emit('savedata',data); //pass the data as the second parameter }); $scope.$on('savedata',function(event,data) { //receive the data as second parameter }); (b) sending data from parent to child controller $scope.SaveDB(Obj,function(data){ $scope.$broadcast('savedata',data); }); $scope.SaveDB(Obj,function(data){`enter code here` $rootScope.$broadcast('saveCallback',data); });

有许多方法可以在控制器之间共享数据

使用服务 使用美元的状态。去服务 使用stateparams 使用rootscope

各方法说明:

I am not going to explain as its already explained by someone using $state.go $state.go('book.name', {Name: 'XYZ'}); // then get parameter out of URL $state.params.Name; $stateparam works in a similar way to $state.go, you pass it as object from sender controller and collect in receiver controller using stateparam using $rootscope (a) sending data from child to parent controller $scope.Save(Obj,function(data) { $scope.$emit('savedata',data); //pass the data as the second parameter }); $scope.$on('savedata',function(event,data) { //receive the data as second parameter }); (b) sending data from parent to child controller $scope.SaveDB(Obj,function(data){ $scope.$broadcast('savedata',data); }); $scope.SaveDB(Obj,function(data){`enter code here` $rootScope.$broadcast('saveCallback',data); });

只需简单地执行(在v1.3.15中测试):

<article ng-controller="ctrl1 as c1">
    <label>Change name here:</label>
    <input ng-model="c1.sData.name" />
    <h1>Control 1: {{c1.sData.name}}, {{c1.sData.age}}</h1>
</article>
<article ng-controller="ctrl2 as c2">
    <label>Change age here:</label>
    <input ng-model="c2.sData.age" />
    <h1>Control 2: {{c2.sData.name}}, {{c2.sData.age}}</h1>
</article>

<script>
    var app = angular.module("MyApp", []);

    var dummy = {name: "Joe", age: 25};

    app.controller("ctrl1", function () {
        this.sData = dummy;
    });

    app.controller("ctrl2", function () {
        this.sData = dummy;
    });
</script>

有多种方法可以在控制器之间共享数据

角服务 $broadcast， $emit方法 父到子控制器通信 rootscope美元

众所周知，$rootscope不是数据传输或通信的首选方式，因为它是一个全局作用域，可用于整个应用程序

对于Angular Js控制器之间的数据共享，Angular服务是最佳实践，例如.factory， .service 供参考

如果数据从父控制器传输到子控制器，您可以通过$scope直接访问子控制器中的父数据 如果你正在使用ui-router，那么你可以使用$stateParmas来传递url参数，如id，名称，键等

$broadcast也是在控制器之间从父控制器传输数据到子控制器的好方法，$emit是将数据从子控制器传输到父控制器的好方法

HTML

<div ng-controller="FirstCtrl">
   <input type="text" ng-model="FirstName">
   <br>Input is : <strong>{{FirstName}}</strong>
</div>

<hr>

<div ng-controller="SecondCtrl">
   Input should also be here: {{FirstName}}
</div>

JS

myApp.controller('FirstCtrl', function( $rootScope, Data ){
    $rootScope.$broadcast('myData', {'FirstName': 'Peter'})
});

myApp.controller('SecondCtrl', function( $rootScope, Data ){
    $rootScope.$on('myData', function(event, data) {
       $scope.FirstName = data;
       console.log(data); // Check in console how data is coming
    });
});

参考给出的链接了解更多关于$broadcast的信息

还有另一种不用$watch的方法，使用angular.copy:

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

myApp.factory('Data', function(){

    var service = {
        FirstName: '',
        setFirstName: function(name) {
            // this is the trick to sync the data
            // so no need for a $watch function
            // call this from anywhere when you need to update FirstName
            angular.copy(name, service.FirstName); 
        }
    };
    return service;
});


// Step 1 Controller
myApp.controller('FirstCtrl', function( $scope, Data ){

});

// Step 2 Controller
myApp.controller('SecondCtrl', function( $scope, Data ){
    $scope.FirstName = Data.FirstName;
});

不知道我在哪里得到了这个模式，但对于跨控制器共享数据和减少$rootScope和$scope，这工作得很好。这让人想起有发布者和订阅者的数据复制。希望能有所帮助。

服务:

(function(app) {
    "use strict";
    app.factory("sharedDataEventHub", sharedDataEventHub);

    sharedDataEventHub.$inject = ["$rootScope"];

    function sharedDataEventHub($rootScope) {
        var DATA_CHANGE = "DATA_CHANGE_EVENT";
        var service = {
            changeData: changeData,
            onChangeData: onChangeData
        };
        return service;

        function changeData(obj) {
            $rootScope.$broadcast(DATA_CHANGE, obj);
        }

        function onChangeData($scope, handler) {
            $scope.$on(DATA_CHANGE, function(event, obj) {
                handler(obj);
            });
        }
    }
}(app));

得到新数据的控制器，也就是发布者，会做这样的事情。

var someData = yourDataService.getSomeData();

sharedDataEventHub.changeData(someData);

同样使用这些新数据的控制器，也就是所谓的订阅服务器，会做这样的事情…

sharedDataEventHub.onChangeData($scope, function(data) {
    vm.localData.Property1 = data.Property1;
    vm.localData.Property2 = data.Property2;
});

这适用于任何场景。当主控制器被初始化，它得到数据时，它会调用changeData方法，它会把那个广播给那个数据的所有订阅者。这减少了控制器之间的耦合。