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<title>簡(jiǎn)潔實(shí)用的jQuery手風(fēng)琴插件|DEMO_jQuery之家-自由分享jQuery、html5、css3的插件庫</title>
<link rel="stylesheet" type="text/css" href="css/normalize.css" />
<link rel="stylesheet" type="text/css" href="css/default.css">
<link rel="stylesheet" type="text/css" href="css/jquery.accordion.css">
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<script src="http://libs.useso.com/js/html5shiv/3.7/html5shiv.min.js"></script>
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<article class="htmleaf-container">
<header class="htmleaf-header">
<h1>簡(jiǎn)潔實(shí)用的jQuery手風(fēng)琴插件 <span>A jQuery accordion plugin</span></h1>
<div class="htmleaf-links">
<a class="htmleaf-icon icon-htmleaf-home-outline"  title="jQuery之家" target="_blank"><span> jQuery之家</span></a>
<a class="htmleaf-icon icon-htmleaf-arrow-forward-outline"  title="返回下載頁" target="_blank"><span> 返回下載頁</span></a>
</div>
</header>
<div class="accordion">
<ul>
<li class="item1 active"><a href="javascript:void();">111</a></li>
<li class="item2"><a href="javascript:void();">222</a></li>
<li class="item3"><a href="javascript:void();">333</a></li>
<li class="item4"><a href="javascript:void();">444</a></li>
<li class="item5"><a href="javascript:void();">555</a></li>
</ul>
</div>
</article>
<script src="lib/jquery-1.11.1.min.js"></script>
<script src="js/jquery.accordion.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$(".accordion").accordion();
});
</script>
</body>
</html>

jquery.accordion.js代碼

/*
* jquery.accordion 0.0.1
* Copyright (c) 2015 lengziyu http://lengziyu.com/
* Date: 2015-10-10
*/
; (function ($) {
$.fn.accordion = function (opts) {
//默認(rèn)值
var defaults = {
max: "620px",
min: "140px",
speed: "1000"
}
var opts = $.extend(defaults, opts);
this.each(function () {
var div = $(this),//$(".accordion").accordion(); 表示$(".accordion")這個(gè)元素 這里是div
ul = div.children(),//這里表示ul元素
li = ul.children();//這里是li元素
//alert(div.html() + "," + ul.html() + "," + li.html());
//觸發(fā)事件
ul.find(".active a").hide();//隱藏a標(biāo)簽
//alert(ul.find(".active a").length);
/*
fadeOut()：淡出
animate() 方法執(zhí)行 CSS 屬性集的自定義動(dòng)畫。
該方法通過CSS樣式將元素從一個(gè)狀態(tài)改變?yōu)榱硪粋€(gè)狀態(tài)。CSS屬性值是逐漸改變的，這樣就可以創(chuàng)建動(dòng)畫效果。
只有數(shù)字值可創(chuàng)建動(dòng)畫（比如 "margin:30px"）。字符串值無法創(chuàng)建動(dòng)畫（比如 "background-color:red"）。
$(selector).animate(styles,speed,easing,callback) $(selector).animate(styles,options)
find() 方法獲得當(dāng)前元素集合中每個(gè)元素的所有第一級(jí)別后代
搜索所有段落中的后代 span 元素，并將其顏色設(shè)置為紅色：
$("p").find("span").css('color','red');
siblings() 獲得匹配集合中每個(gè)元素的所有同胞（同一級(jí)）
*/
//鼠標(biāo)進(jìn)入li觸發(fā)
ul.on("mouseenter", "li", function () {
//$(this)表示li元素
$(this).addClass('active')
.animate({ width: opts.max }, opts.speed)
.find("a").fadeOut()
.parent().siblings().removeClass('active')
.animate({ width: opts.min }, opts.speed)
.find("a").show();
})
})
}
})(jQuery);

部分css樣式

*{
padding: 0;
margin: 0;
}
ul li{
list-style: none;
float: left;
}
.accordion{
width: 1180px;
overflow: hidden;
height: 375px;
margin:0 auto;
}
.accordion ul li{
background-repeat: no-repeat;
float: left;
width: 140px;
height: 350px;
cursor: default;
}
.accordion ul li.active{
width: 620px;
}
.accordion ul .item1{
background-image: url(../img/pic1.jpg);
}
.accordion ul .item2{
background-image: url(../img/pic2.jpg);
}
.accordion ul .item3{
background-image: url(../img/pic3.jpg);
}
.accordion ul .item4{
background-image: url(../img/pic4.jpg);
}
.accordion ul .item5{
background-image: url(../img/pic5.jpg);
}
.accordion ul li a{
display: block;
width: 140px;
height: 350px;
cursor: default;
}
.accordion ul .item1 a{
background-image: url(../img/pics1.jpg);
}
.accordion ul .item2 a{
background-image: url(../img/pics2.jpg);
}
.accordion ul .item3 a{
background-image: url(../img/pics3.jpg);
}
.accordion ul .item4 a{
background-image: url(../img/pics4.jpg);
}
.accordion ul .item5 a{
background-image: url(../img/pics5.jpg);
}