AngularJS之ng-options指令

1.基本下拉效果(lable for value in array)

　　其中select標簽中的ng-model屬性必須有，其值為選中的對象或屬性值。

　　

    <div ng-controller="ngselect">
        <p>usage:label for value in array</p>
        <p>選項，{{selected}}</p>
        <select ng-model="selected" ng-options="o.id for o in optData">
            <option value="">-- 請選擇 --</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.自定義下拉顯示名稱(label for value in array)

    label可以根據需要拼接出不同的字符串

　　

    <div ng-controller="ngselect2">
        <p>usage:label for value in array(label可以根據需求拼接出不同的字符串)</p>
        <p>選項，{{selected}}</p>
        <select ng-model="selected" ng-options="(o.ProductColor+'-'+o.ProductName) for o in optData">
            <option value="">-- 請選擇 --</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 選項分組

    group by分組項

　　

    <div ng-controller="ngselect3">
        <p>usage:label group by groupName for value in array</p>
        <p>選項，{{selected}}</p>
        <select ng-model="selected" ng-options="(o.ProductColor+'-'+o.ProductName) group by o.MainCategory for o in optData">
            <option value="">-- 請選擇 --</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: '圓領長袖',
            ProductColor: '黃'
        },{
            id: 10003,
            MainCategory: '女',
            ProductName: '圓領短袖',
            ProductColor: '黃'
        }];
    }]);

4.ng-options 自定義ngModel的綁定

    下面selected的值為optData的id

　　

    <div ng-controller="ngselect4">
        <p>usage:select as label for value in array</p>
        <p>選項，{{selected}}</p>
        <select ng-model="selected" ng-options="o.id as o.ProductName for o in optData">
            <option value="">-- 請選擇 --</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: '圓領長袖',
            ProductColor: '黃'
        },{
            id: 10003,
            MainCategory: '女',
            ProductName: '圓領短袖',
            ProductColor: '黃'
        }];
    }]);

5.ng-options 多級下拉

<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: '張三',
                            interest: [
                            '爬山',
                            '游泳',
                            '旅游',
                            '美食'
                        ]
                    },
                    {
                        id: 1,
                        name: '李四',
                        interest: [
                            '音樂',
                            '美食',
                            'Coffee',
                            '看書'
                        ]
                    },
                    {
                        id: 2,
                        name: '王五',
                        interest: [
                            '音樂',
                            '電影',
                            '中國好聲音',
                            '爸爸去哪了',
                            '非常靜距離'
                        ]
                    },
                    {
                        id: 3,
                        name: '小白',
                        interest: [
                            '游泳',
                            '游戲',
                            '宅家里'
                        ]
                    }
                ];
}]);
    

效果：http://runjs.cn/detail/nhi8ubrb