js设置html区域隐藏和显示

 if(message != "指派")
  {
     document.getElementById("appoint").style.display="none";

  }else{
     document.getElementById("appoint").style.display="inline";
  }

上面是，javascript代码，下面是html代码：

 <!-- 选择指派人-->
 <div id="appoint">

 <label>指派给：</label>
 <select name="assignedTo" id="assignedTo">
 　　<option value="未选择" selected >选择指派人</option>
          @foreach($userList as $user)
                   <option value="{{$user->name}}">{{$user->name}}</option>
          @endforeach
 </select>
 </div>

转载：http://www.cnblogs.com/unpolishedgem/p/3247098.html