/**
  * 带筛选功能的下拉框
  * 使用方法 <select ngc-select-search name="select1" ng-options="">
  * 说明[ select 一定要有name,ng-options 属性]
  */
 .directive('ngcSelectSearch', function($animate, $compile, $parse) {

   function parseOptions(optionsExp, element, scope) {
     // ngOptions里的正则
     var NG_OPTIONS_REGEXP = /^\s*([\s\S]+"chose-container">' +
       '<div class="chose-single"><span class="j-view"></span><i class="glyphicon glyphicon-remove"></i></div>' +
       '<div class="chose-drop chose-hide j-drop">' +
       '<div class="chose-search">' +
       '<input class="j-key" type="text" autocomplete="off">' +
       '</div>' +
       '<ul class="chose-result">' +
       // '<li ng-repeat="'+repeatTempl+'" data-id="'+keyTempl+'" >{{'+ valueTempl+'}}</li>'+
       '</ul>' +
       '</div>' +
       '</div>',
     link: {
       pre: function selectSearchPreLink(scope, element, attr, ctrls) {

         var tmplNode = $(this.template).first();

         var modelName = attr.ngModel,
           name = attr.name"click", function() {
           $('.j-drop').addClass('chose-hide');
           choseNode.find('i').addClass('chose-hide');
           return false;
         });

       }
     }
   };
 })

.chose-hide {
 position: absolute!important;
 top: -999em !important;
}
.chose-container {
 border: none!important;
 float: left;
 margin-right: 40px;
 padding: 0!important;
 position: relative;
}
.chose-container .chose-single {
 padding: 6px 12px;
 color: #333;
 width: 100%;
 border: 1px solid #eee;
 display: inline-block;
 height: 30px;
}
.chose-container .chose-single::after {
 content: '';
 position: absolute;
 border-width: 6px 3px;
 border-style: solid;
 /* border-top-color: transparent; */
 border-left-color: transparent;
 border-right-color: transparent;
 border-bottom-color: transparent;
 right: 8px;
 top: 12px;
}
.chose-container .chose-single i {
 width: 12px;
 float: right;
 right: 8px;
 font-size: 12px;
 height: 12px;
 background-color: #eee;
}
.chose-container .chose-drop {
 width: 195px;
 position: absolute;
 border: 1px solid #eee;
 z-index: 1000;
 background-color: #fff;
}
.chose-container .chose-search input[type='text'] {
 margin: 0;
 padding-left: 12px;
 width: 100%;
 height: 30px;
 border: 1px solid #ccc;
 float: none;
}
.chose-container .chose-result {
 max-height: 370px;
 overflow-y: scroll;
 overflow-x: hidden;
}
.chose-container .chose-result li {
 padding: 5px 12px;
 list-style-type: none;
}
.chose-container .chose-result li:hover {
 background-color: #e1e2e7;
}

<select ngc-select-search class="common-select" ng-model="aa.b" ng-options="obj.countryId as obj.countryCnName for obj in vm.countries" name="country">
<option value="">请选择</option></select>