例子：搜索

  <div ng-controller="TestCtrl" ng-init="s=data[0].name; q=''">
    <div>
      <span>查找：</span> <input type="text" ng-model="q" />
    </div>
    <select ng-multiple="true" ng-model="s"
            ng-options="o.name as o.name + '(' + o.age + ')' for o in data | filter: {name: q} | orderBy: ['age', 'name'] ">
    </select>
  </div>

  <script type="text/javascript">
  var TestCtrl = function($scope){
    $scope.data = [
      {name: 'B', age: 4},
      {name: 'A', age: 1},
      {name: 'D', age: 3},
      {name: 'C', age: 3},
    ];
  }

  angular.bootstrap(document.documentElement);
  </script>