AngularJS之ng-options指令

1.基本下拉效果(lable for value in array)

　　其中select标签中的ng-model属性必须有，其值为选中的对象或属性值。

　　

    <div ng-controller="ngselect">
        <p>usage:label for value in array</p>
        <p>选项，{{selected}}</p>
        <select ng-model="selected" ng-options="o.id for o in optData">
            <option value="">-- 请选择 --</option>
        </select>
    </div>
    m1.controller("ngselect",['$scope',function($sc){
        $sc.selected = '';
        $sc.optData = [{
            id: 10001,
            MainCategory: '男',
            ProductName: '水洗T恤',
            ProductColor: '白'
        },{
            id: 10002,
            MainCategory: '女',
            ProductName: '圓領短袖',
            ProductColor: '黃'
        },{
            id: 10003,
            MainCategory: '女',
            ProductName: '圓領短袖',
            ProductColor: '黃'
        }];
    }]);

2.自定义下拉显示名称(label for value in array)

    label可以根据需要拼接出不同的字符串

　　

    <div ng-controller="ngselect2">
        <p>usage:label for value in array(label可以根据需求拼接出不同的字符串)</p>
        <p>选项，{{selected}}</p>
        <select ng-model="selected" ng-options="(o.ProductColor+'-'+o.ProductName) for o in optData">
            <option value="">-- 请选择 --</option>
        </select>
    </div>
    m1.controller("ngselect2",['$scope',function($sc){
        $sc.selected = '';
        $sc.optData = [{
            id: 10001,
            MainCategory: '男',
            ProductName: '水洗T恤',
            ProductColor: '白'
        },{
            id: 10002,
            MainCategory: '女',
            ProductName: '圓領短袖',
            ProductColor: '黃'
        },{
            id: 10003,
            MainCategory: '女',
            ProductName: '圓領短袖',
            ProductColor: '黃'
        }];
    }]);

3.ng-options 选项分组

    group by分组项

　　

    <div ng-controller="ngselect3">
        <p>usage:label group by groupName for value in array</p>
        <p>选项，{{selected}}</p>
        <select ng-model="selected" ng-options="(o.ProductColor+'-'+o.ProductName) group by o.MainCategory for o in optData">
            <option value="">-- 请选择 --</option>
        </select>
    </div>
    m1.controller("ngselect3",['$scope',function($sc){
        $sc.selected = '';
        $sc.optData = [{
            id: 10001,
            MainCategory: '男',
            ProductName: '水洗T恤',
            ProductColor: '白'
        },{
            id: 10002,
            MainCategory: '女',
            ProductName: '圓領长袖',
            ProductColor: '黃'
        },{
            id: 10003,
            MainCategory: '女',
            ProductName: '圓領短袖',
            ProductColor: '黃'
        }];
    }]);

4.ng-options 自定义ngModel的绑定

    下面selected的值为optData的id

　　

    <div ng-controller="ngselect4">
        <p>usage:select as label for value in array</p>
        <p>选项，{{selected}}</p>
        <select ng-model="selected" ng-options="o.id as o.ProductName for o in optData">
            <option value="">-- 请选择 --</option>
        </select>
    </div>
    m1.controller("ngselect4",['$scope',function($sc){
        $sc.selected = '';
        $sc.optData = [{
            id: 10001,
            MainCategory: '男',
            ProductName: '水洗T恤',
            ProductColor: '白'
        },{
            id: 10002,
            MainCategory: '女',
            ProductName: '圓領长袖',
            ProductColor: '黃'
        },{
            id: 10003,
            MainCategory: '女',
            ProductName: '圓領短袖',
            ProductColor: '黃'
        }];
    }]);

5.ng-options 多级下拉

<div ng-controller="ngselect5">
    <select ng-model="selectedPerson" ng-options="obj.name for obj in people"></select>
    <select ng-model="selectedGenre">
        <option ng-repeat="label in people[selectedPerson.id].interest">{{label}}</option>
    </select>
</div>
m1.controller("ngselect5",['$scope',function($sc){
$sc.people = [
                    {
                            id: 0,
                            name: '张三',
                            interest: [
                            '爬山',
                            '游泳',
                            '旅游',
                            '美食'
                        ]
                    },
                    {
                        id: 1,
                        name: '李四',
                        interest: [
                            '音乐',
                            '美食',
                            'Coffee',
                            '看书'
                        ]
                    },
                    {
                        id: 2,
                        name: '王五',
                        interest: [
                            '音乐',
                            '电影',
                            '中国好声音',
                            '爸爸去哪了',
                            '非常静距离'
                        ]
                    },
                    {
                        id: 3,
                        name: '小白',
                        interest: [
                            '游泳',
                            '游戏',
                            '宅家里'
                        ]
                    }
                ];
}]);
    

效果：http://runjs.cn/detail/nhi8ubrb