Bootstrap select实现下拉框多选效果

<div class= "row" style ="margin-top :10px;">
  <div class= "form-group col-xs-12">
   <label for= "scenemodel_title" class="col-sm-1 col-sm-offset-1 control-label" >分类: </label>
    <div class= "col-sm-4">
      <select class= "form-control selectpicker" multiple>
         <option> 请选择</option >
         <option> 游记</option >
         <option> 景点</option >
         <option> 东京</option >
         <option> 日本</option >
         <option> 香港</option >
         <option> 加拿大</option >
      </select>

 </div>
 <label for= "scene_title" class="col-sm-1 control-label" >主题游: </label>
 <div class= "col-sm-4">
   <select class= "form-control selectpicker" multiple>
   <option> 请选择</option >
   <option> 游船</option >
   <option> 漂流避暑</option >
   <option> 博物馆</option >
   <option> 影视基地</option >
   <option> 名胜古迹</option >
   <option> 海岛度假</option >

    </select>

  </div>

<!-- <div class="col-sm-10"> -->

<%-- <form:checkboxes path="scenetyperelations" items="${scenetypemap}" /> --%>

<!--  </div> -->

    </div>

</div>

define(function(require, exports, module) {


   var $ = require( "jquery");
   require( "jquery-validation/1.11.1/jquery.validate.min.js" );
   require( "jquery-validation/1.11.1/messages_bs_zh.js" );
   require( "bootstrap/select/bootstrap-select.min.css" )
   require( "bootstrap/select/bootstrap-select.min.js" )
   $(document).ready( function() {

     // 聚焦第一个输入框
     $( "input[name=name]").focus();
     // 为inputform注册validate函数
     $( "#scenemodel").validate();

      var lon = $("input[name=longitude]" ).val();
      if (lon == "," ) {
       $( "input[name=longitude]").val("" );

     }

     jquery( '.selectpicker').selectpicker({

       livesearch: true,

       size:8

     });

   });
   module.exports = $;

});