jQuery鼠标经过显示二级导航菜单(用less写的)

最新推荐文章于 2021-05-10 08:39:54 发布

caterpillar tail

最新推荐文章于 2021-05-10 08:39:54 发布

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分类专栏： web前端 JavaScript 文章标签：导航

本文链接：https://blog.youkuaiyun.com/dongxingpeng/article/details/79197214

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HTML代码，包含js

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/nav.css">
    <script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
</head>
<body>
<header class="nav-header">
    <ul class="nav" id="nav">
        <li>
            <a href="javascript:void(0)">首页</a>
            <ul class="nav-list">
                <li><a href="javascript:void(0)">首页</a></li>
                <li><a href="javascript:void(0)">首页</a></li>
                <li><a href="javascript:void(0)">首页</a></li>
            </ul>
        </li>
        <li>
            <a href="javascript:void(0)">导航一</a>
            <ul class="nav-list">
                <li><a href="javascript:void(0)">导航一</a></li>
                <li><a href="javascript:void(0)">导航一</a></li>
                <li><a href="javascript:void(0)">导航一</a></li>
            </ul>
        </li>
        <li>
            <a href="javascript:void(0)">导航二</a>
            <ul class="nav-list">
                <li><a href="javascript:void(0)">导航二</a></li>
                <li><a href="javascript:void(0)">导航二</a></li>
                <li><a href="javascript:void(0)">导航二</a></li>
            </ul>
        </li>
        <li>
            <a href="javascript:void(0)">导航三</a>
            <ul class="nav-list">
                <li><a href="javascript:void(0)">导航三</a></li>
                <li><a href="javascript:void(0)">导航三</a></li>
                <li><a href="javascript:void(0)">导航三</a></li>
            </ul>
        </li>
        <li>
            <a href="javascript:void(0)">导航四</a>
            <ul class="nav-list">
                <li><a href="javascript:void(0)">导航四</a></li>
                <li><a href="javascript:void(0)">导航四</a></li>
                <li><a href="javascript:void(0)">导航四</a></li>
            </ul>
        </li>
        <li>
            <a href="javascript:void(0)">导航五</a>
            <ul class="nav-list">
                <li><a href="javascript:void(0)">导航五</a></li>
                <li><a href="javascript:void(0)">导航五</a></li>
                <li>
                    <a href="javascript:void(0)">导航五</a>
                </li>
            </ul>
        </li>
    </ul>
</header>
<section>
    <div class="instruction">
        说明:练习一下导航怎么写，同时试着用less来写样式。
        <br>需要更多信息请查看：<a href="http://blog.youkuaiyun.com/dongxingpeng">http://blog.youkuaiyun.com/dongxingpeng</a>
    </div>
</section>
<script !src="">
    $(function () {
        $("#nav li").each(function () {
            $(this).hover(function () {
                $(this).find(".nav-list").addClass("show-list");
            },function () {
                $(this).find(".nav-list").removeClass("show-list");
            })
        })
    })
</script>
</body>
</html>

less样式语言

@red :#000;
@white :#CA952D;
@li-width : 200px;
@fontSize: 20px;
html,body{
  background: @red;
  margin: 0;
  padding: 0;
}
header{
  width: 100%;
  height: 30px;
  color: @white;
    .nav{
      width: 1200px;
      margin: 0 auto;
      height: 30px;
      text-align: center;
      font-size: 16px;
    }
    .nav li{
      float: left;
      width: @li-width;
      list-style-type: none;
      line-height: 30px;
    }
    .nav li a,.nav-list li a{
      text-decoration: none;
      color: @white;
    }
    .nav-list {
      position: relative;
      display: none;
      left: -40px;
      z-index: 99;
      width: 100px;
      background: #00ff00;
    }
    .show-list{
      display: block;
    }
}
.instruction{
  position: fixed;
  top:50%;
  left:30%;
  clear: both;
  color: @white;
  font-size: @fontSize;
  a{
    color: @white;
    text-decoration: none;
  }
}