jQuery&HTML&CSS3实现垂直手风琴折叠菜单方法讲解

在网页制作中我们常常需要折叠式的菜单，在折叠菜单中，手风琴特效的菜单是非常受欢迎，下面就讲解使用jQuery+HTML+CSS3实现垂直手风琴折叠菜单的方法。

jQuery实现垂直手风琴折叠菜单示例代码

首先给出手风琴折叠菜单的HTML代码，如下所示：






  

  CSS3垂直手风琴折叠菜单DEMO演示

  
	
	

    





	
	
		
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如上面的代码，首先需要引入font-awesome.min.css，这是awesome的字体库。然后需要引入自定义的css，style.css代码如下面所示：

* {
	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 {
 	width: 100%;
 	max-width: 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 {
 	background: #b63b4d;
 	color: #FFF;
 }

使用jQuery&HTML&CSS3实现垂直手风琴折叠菜单就必须使用jQuery，所以一定要引入jQuery库。然后配合自定义的js，index.js代码如下所示：

$(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);
});

这样我们可以看到下面的图片效果：