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'

}];

}]);

效果：http://runjs.cn/detail/nhi8ubrb

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