angular实时显示checkbox被选中的元素

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/**

 * Created by zh on 20/05/15.

 */

// Code goes here

var iApp = angular.module("App", []);

iApp.controller('AddStyleCtrl', function($scope)

{

    $scope.tagcategories = [

        {

            id: 1,

            name: 'Color',

            tags: [

                {

                    id:1,

                    name:'color1'

                },

                {

                    id:2,

                    name:'color2'

                },

                {

                    id:3,

                    name:'color3'

                },

                {

                    id:4,

                    name:'color4'

                },

            ]

        },

        {

            id:2,

            name:'Cat',

            tags:[

                {

                    id:5,

                    name:'cat1'

                },

                {

                    id:6,

                    name:'cat2'

                },

            ]

        },

        {

            id:3,

            name:'Scenario',

            tags:[

                {

                    id:7,

                    name:'Home'

                },

                {

                    id:8,

                    name:'Work'

                },

            ]

        }

    ];

//用于存储选中的值

    $scope.selected = [];

    $scope.selectedTags = [];

//更新事件

    var updateSelected = function(action,id,name){

        if(action == 'add' && $scope.selected.indexOf(id) == -1){

            $scope.selected.push(id);

            $scope.selectedTags.push(name);

        }

        if(action == 'remove' && $scope.selected.indexOf(id)!=-1){

            var idx = $scope.selected.indexOf(id);

            $scope.selected.splice(idx,1);

            $scope.selectedTags.splice(idx,1);

        }

    }

//用于监控点击事件，checkbox选择了就更新

    $scope.updateSelection = function($event, id){

        var checkbox = $event.target;

        var action = (checkbox.checked?'add':'remove');

        updateSelected(action,id,checkbox.name);

    }

//判断存储的变量中是否已包含该checkbox,$scope.selected.indexOf(id)>=0是个布尔值

$scope.isSelected = function(id){ return $scope.selected.indexOf(id)>=0; } });

<!DOCTYPE html>

<html data-ng-app="App">

<head>

    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.8/angular.min.js"></script>

    <script src="script2.js"></script>

</head>

<body data-ng-controller="AddStyleCtrl">

    <div>Choose Tags</div>

    <div>

        <div>You have choosen:</div>

        <hr>

        <label data-ng-repeat="selectedTag in selectedTags">

            (({{selectedTag}}))

        </label>

        <hr>

        <div data-ng-repeat="category in tagcategories">

            <div>{{ category.name }}</div>

            <div data-ng-repeat="tag in category.tags">

                <div>
　　　　　　　　　　　 <!--根据ng-repeat生成一些button-->

                    <input type="checkbox" id={{tag.id}} name="{{tag.name}}" ng-checked="isSelected(tag.id)" ng-click="updateSelection($event,tag.id)">

                    {{ tag.name }}

                </div>

            </div>

            <hr>

        </div>

    </div>

<pre>{{selected|json}}</pre>

<pre>{{selectedTags|json}}</pre>

</body>

</html>