<form  class="form-horizontal" role="form">
      <p class="modal-body" >
           <p  class="form-group">
               <label class="col-xs-3 control-label">原密码</label>
               <input   type="password" value="" class=""  name="original_password"  id=""> <span id="s2"></span>
           </p>
           <p  class="form-group">
               <label class="col-xs-3 control-label">密码</label>
               <input   type="password"  value="" class="" name="password"  id="">
           </p>
            <p  class="form-group">
                <label class="col-xs-3 control-label">确认密码</label>
                <input  type="password"  value="" class=""  name="confirm_password" id="">
            </p>
     </p>
          <!---按钮--->
      <p class="modal-footer" >
          <button class="button" type="submit" id="passwordChange">
                                            提交
                                        </button>
          <button class="button" type="button"  data-dismiss="modal">
                                          取消
                                        </button>
       </p>
</form>

为什么当提及按钮验证通过模态框自己消失，我想要模态框不消失怎么做？