AngularJS中下拉框的基本用法示例

<div ng-app="myapp" ng-controller="myctrl">
<select ng-model="selectedname" ng-options="x for x in names"></select>
等价于：
<select>
<option ng-repeat="item in names">{{item}}</option>
</select>
<hr>
<!-- ng-repeat绑定的值为一个字符串，ng-options绑定的为一个对象 -->
<select ng-model="selectedsite">
<option ng-repeat="item in sites" value="{{item.url}}">{{item.site}}</option>
</select>
<span>你选中的选址：{{selectedsite}}</span>
<br><br>
<select ng-model="selectedsite" ng-options="x.site for x in sites"></select>
<span>你选中的选址：{{selectedsite}}</span>
<hr>
<!-- 因为对象数组没有key，angular默认使用数组的下标值作为key显示 -->
<select ng-model="aaaa" ng-options="x for (x, y) in sites"></select>
<span>你选择的值是: {{aaaa}}</span>
</div>

var app = angular.module('myapp', []);
app.controller('myctrl', function($scope) {
$scope.names = ["google", "baidu", "taobao"];
$scope.sites = [{
 site : "google", url : "http://www.google.com"},
{site : "baidu", url : "http://www.baidu.com"},
{site : "taobao", url : "http://www.taobao.com"} ];
});