最近这个项目中需要用到ui-select下拉框插件来进行对用户的本地搜索并选中，这里分享一下ui-select插件在angularjs中的用法以及注意事项。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link href="https://cdn.bootcss.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet">
<link href="https://cdn.bootcss.com/angular-ui-select/0.20.0/select.css" rel="stylesheet">
</head>
<body>
<div>
<div ng-app="app" ng-controller="ctrl">
<ui-select ng-model="selected.value">
<ui-select-match>
<span ng-bind="$select.selected.name"></span>
</ui-select-match>
<ui-select-choices repeat="item in (itemArray | filter: $select.search) track by item.id">
<span ng-bind="item.name"></span>
</ui-select-choices>
</ui-select>
</div>
</div>
<script src="https://cdn.bootcss.com/angular.js/1.6.9/angular.min.js"></script>
<script src="https://cdn.bootcss.com/angular.js/1.6.9/angular-sanitize.min.js"></script>
<script src="https://cdn.bootcss.com/angular-ui-select/0.20.0/select.min.js"></script>
<script>
angular.module('app',['ui.select','ngSanitize'])
.controller('ctrl', ['$scope', function ($scope){
$scope.itemArray = [
{id: 1, name: 'first'},
{id: 2, name: 'second'},
{id: 3, name: 'third'},
{id: 4, name: 'fourth'},
{id: 5, name: 'fifth'},
];
$scope.selected = { value: $scope.itemArray[2] };
}]);
</script>
</body>
</html>需要注意的就是双向绑定的时候传入的是那个选中的对象，而不是选中的value，这个地方有点坑，需要注意一下。