angular实时显示checkbox被选中的元素

/**
 * 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" {{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>

  出处: http://www.cnblogs.com/CheeseZH/