jQuery---下拉菜单案例

下拉菜单案例

<!DOCTYPE html>
<html>

<head lang="en">
  <meta charset="UTF-8">
  <title></title>
  <style type="text/css">
    * {
      margin: 0;
      padding: 0;
    }

    ul {
      list-style: none;
    }

    .wrap {
      width: 330px;
      height: 30px;
      margin: 100px auto 0;
      padding-left: 10px;
      background-image: url(imgs/bg.jpg);
    }

    .wrap li {
      background-image: url(imgs/libg.jpg);
    }

    .wrap>ul>li {
      float: left;
      margin-right: 10px;
      position: relative;
    }

    .wrap a {
      display: block;
      height: 30px;
      width: 100px;
      text-decoration: none;
      color: #000;
      line-height: 30px;
      text-align: center;
    }

    .wrap li ul {
      position: absolute;
      top: 30px;
      display: none;
    }
  </style>
  <script src="../jquery-1.12.4.js"></script>
  <script>
    $(function () {

      var $li = $(".wrap>ul>li")
      //给li注册鼠标经过事件，让自己的ul显示出来
      $li.mouseenter(function () {
        //找到所有的儿子，并且还得是ul
        $(this).children("ul").show();
      })

      $li.mouseleave(function () {
        $(this).children("ul").hide();
      })


    });
  </script>
</head>

<body>
  <div class="wrap">
    <ul>
      <li>
        <a href="javascript:void(0);">一级菜单1</a>
        <ul class="ul">
          <li><a href="javascript:void(0);">二级菜单11</a></li>
          <li><a href="javascript:void(0);">二级菜单12</a></li>
          <li><a href="javascript:void(0);">二级菜单13</a></li>
        </ul>
      </li>
      <li>
        <a href="javascript:void(0);">一级菜单2</a>
        <ul>
          <li><a href="javascript:void(0);">二级菜单21</a></li>
          <li><a href="javascript:void(0);">二级菜单22</a></li>
          <li><a href="javascript:void(0);">二级菜单23</a></li>
        </ul>
      </li>
      <li>
        <a href="javascript:void(0);">一级菜单3</a>
        <ul>
          <li><a href="javascript:void(0);">二级菜单31</a></li>
          <li><a href="javascript:void(0);">二级菜单32</a></li>
          <li><a href="javascript:void(0);">二级菜单33</a></li>
        </ul>
      </li>
    </ul>
  </div>

</body>

</html>
来源：https://www.cnblogs.com/jane-panyiyun/p/12197046.html
标签
jquery