AngularJS学习笔记之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 效果 http://sandbox.runjs.cn/show/nhi8ubrb

<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'  }];}]);