竖向两级手风琴 TAB 栏

<!DOCTYPE html>
<html>

<head>

	<meta charset="UTF-8">

	<title>CSS3垂直手风琴折叠菜单 - 站长素材</title>

	<meta name="viewport" content="width=device-width, initial-scale=1">
	<!-- Iconos -->
	<link href="http://maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">

	<style>
		* {
			margin: 0;
			padding: 0;
			-webkit-box-sizing: border-box;
			-moz-box-sizing: border-box;
			box-sizing: border-box;
		}

		body {
			background: #2d2c41;
			font-family: 'Open Sans', Arial, Helvetica, Sans-serif, Verdana, Tahoma;
		}

		ul {
			list-style-type: none;
		}

		a {
			color: #b63b4d;
			text-decoration: none;
		}

		/** =======================
		* Contenedor Principal
		===========================*/
		h1 {
			color: #FFF;
			font-size: 24px;
			font-weight: 400;
			text-align: center;
			margin-top: 80px;
		}

		h1 a {
			color: #c12c42;
			font-size: 16px;
		}

		.accordion {
			 100%;
			max- 360px;
			margin: 30px auto 20px;
			background: #FFF;
			-webkit-border-radius: 4px;
			-moz-border-radius: 4px;
			border-radius: 4px;
		}

		.accordion .link {
			cursor: pointer;
			display: block;
			padding: 15px 15px 15px 42px;
			color: #4D4D4D;
			font-size: 14px;
			font-weight: 700;
			border-bottom: 1px solid #CCC;
			position: relative;
			-webkit-transition: all 0.4s ease;
			-o-transition: all 0.4s ease;
			transition: all 0.4s ease;
		}

		.accordion li:last-child .link {
			border-bottom: 0;
		}

		.accordion li i {
			position: absolute;
			top: 16px;
			left: 12px;
			font-size: 18px;
			color: #595959;
			-webkit-transition: all 0.4s ease;
			-o-transition: all 0.4s ease;
			transition: all 0.4s ease;
		}

		.accordion li i.fa-chevron-down {
			right: 12px;
			left: auto;
			font-size: 16px;
		}

		.accordion li.open .link {
			color: #b63b4d;
		}

		.accordion li.open i {
			color: #b63b4d;
		}

		.accordion li.open i.fa-chevron-down {
			-webkit-transform: rotate(180deg);
			-ms-transform: rotate(180deg);
			-o-transform: rotate(180deg);
			transform: rotate(180deg);
		}

		/**
		* Submenu
		-----------------------------*/
		.submenu {
			display: none;
			background: #444359;
			font-size: 14px;
		}

		.submenu li {
			border-bottom: 1px solid #4b4a5e;
		}

		.submenu a {
			display: block;
			text-decoration: none;
			color: #d9d9d9;
			padding: 12px;
			padding-left: 42px;
			-webkit-transition: all 0.25s ease;
			-o-transition: all 0.25s ease;
			transition: all 0.25s ease;
		}

		.submenu a:hover,
		.selected {
			background: #b63b4d;
			color: #FFF;
		}
	</style>
</head>

<body>
	<!-- Contenedor -->
	<ul id="accordion" class="accordion">
		<li>
			<div class="link"><i class="fa fa-paint-brush"></i>Diseño web<i class="fa fa-chevron-down"></i></div>
			<ul class="submenu">
				<li><a href="#">Photoshop</a></li>
				<li><a href="#">HTML</a></li>
				<li><a href="#">CSS</a></li>
				<li><a href="#">Maquetacion web</a></li>
			</ul>
		</li>
		<li>
			<div class="link"><i class="fa fa-code"></i>Desarrollo front-end<i class="fa fa-chevron-down"></i></div>
			<ul class="submenu">
				<li><a href="#">Javascript</a></li>
				<li><a href="#">jQuery</a></li>
				<li><a href="#">Frameworks javascript</a></li>
			</ul>
		</li>
		<li>
			<div class="link"><i class="fa fa-mobile"></i>Diseño responsive<i class="fa fa-chevron-down"></i></div>
			<ul class="submenu">
				<li><a href="#">Tablets</a></li>
				<li><a href="#">Dispositivos mobiles</a></li>
				<li><a href="#">Medios de escritorio</a></li>
				<li><a href="#">Otros dispositivos</a></li>
			</ul>
		</li>
		<li>
			<div class="link"><i class="fa fa-globe"></i>Posicionamiento web<i class="fa fa-chevron-down"></i></div>
			<ul class="submenu">
				<li><a href="#">Google</a></li>
				<li><a href="#">Bing</a></li>
				<li><a href="#">Yahoo</a></li>
				<li><a href="#">Otros buscadores</a></li>
			</ul>
		</li>
	</ul>

	<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>

	<script>
		// 默认展开第一个
		$(function () {
			$("#accordion").children("li:first-child").addClass("open");
			$("#accordion li:first-child ul").css('display', 'block');
			$(".open .submenu li:first-child a").addClass("selected")
		});

		// 切换
		$("#accordion").on("click", ".open .submenu li", function () {
			$("#accordion a").removeClass("selected");

			$(this).children().addClass("selected");
			console.log($(this).text());
		});
	</script>


	<script>
		$(function () {
			var Accordion = function (el, multiple) {
				this.el = el || {};
				this.multiple = multiple || false;

				// Variables privadas
				var links = this.el.find('.link');
				// Evento
				links.on('click', {
					el: this.el,
					multiple: this.multiple
				}, this.dropdown)
			}

			Accordion.prototype.dropdown = function (e) {
				var $el = e.data.el;
				$this = $(this),
					$next = $this.next();

				$next.slideToggle();
				$this.parent().toggleClass('open');

				if (!e.data.multiple) {
					$el.find('.submenu').not($next).slideUp().parent().removeClass('open');
				};
			}

			var accordion = new Accordion($('#accordion'), false);
		});
	</script>
</body>

</html>
参考:
https://www.cnblogs.com/aiqingqing/p/5041526.html
https://blog.csdn.net/qq_43560721/article/details/83691370
https://www.suibianlu.com/13972.html
竖向 两级手风琴 TAB 栏

竖向两级手风琴 TAB 栏
