Bootstrap导航菜单点击后无法自动添加active的处理方法

<ul class="tabbable faq-tabbable">
  <li class="active"><a href="@Url.Action(" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" Index", "MyContract", new { area = "MyData" })">我的合同</a></li>
  <li><a href="@Url.Action(" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" Index", "MyCashout", new { area = "MyData" })">我的请款</a></li>
  <li><a href="@Url.Action(" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" Index", "MyReceive", new { area = "MyData" })">我的入库</a></li>
  <li><a href="@Url.Action(" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" Index", "MyCashback", new { area = "MyData" })">我的付款</a></li>
</ul>

  $(function () {
    $(".faq-tabbable").find("li").each(function () {
      var a = $(this).find("a:first")[0];
      if ($(a).attr("href") === location.pathname) {
        $(this).addClass("active");
      } else {
        $(this).removeClass("active");
      }
    });
  })