드롭다운 메뉴를 클릭하여 선택한 콘텐츠를 입력 상자에 동기화하는 JS 구현 예

<p class="input-group-btn">
  <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    项目名称
    <span class="caret"></span>
   </button>
   <ul id="project" class="dropdown-menu">
    <li value="account"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >account</a></li>
    <li class="pider"></li>
    <li value="drive"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >drive</a></li>
    <li class="pider"></li>
    <li value="qing"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >qing</a></li>
   </ul>
  </p>

$("#project").on("click", "li", function(){
 $("#proname").val($(this).text());
});