效果如下图所示：
虽然是看了示例之后自己在写的 （就当是给自己一个鼓励吧 加油！）
jquery
$(document).ready(function(){
var h3=$(".accordion h3");
$(".accordion h3:eq(0)").addClass("active");//1.首先获取第一个H3标签添加class；
$(".accordion p:gt(0)").hide();//在获取除了第一个p标签以外的所有标签都隐藏；
h3.click(function(){
$(this).next("p").slideToggle("slow")//查找下一个p标签添加动画，并查找它的兄弟节点是否显示，如果显示就隐藏
.siblings("p:visible").fadeOut("slow");
$(this).toggleClass("active");//给H3标签添加class（如果有就不添加 没有就添加），查找兄弟节点移除class
$(this).siblings("h3").removeClass("active");
});
});
css
body {
margin: 10px auto;
width: 570px;
font: 75%/120% Arial, Helvetica, sans-serif;
}
.accordion {
width: 480px;
border-bottom: solid 1px #c4c4c4;
}
.accordion h3 {
background: #e9e7e7 url(images/arrow-square.gif) no-repeat right -51px;
padding: 7px 15px;
margin: 0;
font: bold 120%/100% Arial, Helvetica, sans-serif;
border: solid 1px #c4c4c4;
border-bottom: none;
cursor: pointer;
}
.accordion h3:hover {
background-color: #e3e2e2;
}
.accordion h3.active {
background-position: right 5px;
}
.accordion p {
background: #f7f7f7;
margin: 0;
padding: 10px 15px 20px;
border-left: solid 1px #c4c4c4;
border-right: solid 1px #c4c4c4;
}
html
Question One Sample Text
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi malesuada, ante at feugiat tincidunt, enim massa gravida metus, commodo lacinia massa diam vel eros. Proin eget urna. Nunc fringilla neque vitae odio. Vivamus vitae ligula.
jQuery 1.12.4是jQuery 1.x系列的最后一个正式稳定版本，由jQuery团队于2016年发布。该版本主要面向需要兼容旧版浏览器环境的网站和Web应用，尤其适用于仍需支持Internet Explorer 6、Internet Explorer 7、Internet Explorer 8等老旧浏览器的项目。
This is Question Two
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi malesuada, ante at feugiat tincidunt, enim massa gravida metus, commodo lacinia massa diam vel eros. Proin eget urna. Nunc fringilla neque vitae odio. Vivamus vitae ligula.
Another Questio here
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi malesuada, ante at feugiat tincidunt, enim massa gravida metus, commodo lacinia massa diam vel eros. Proin eget urna. Nunc fringilla neque vitae odio. Vivamus vitae ligula.
Sample heading
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi malesuada, ante at feugiat tincidunt, enim massa gravida metus, commodo lacinia massa diam vel eros. Proin eget urna. Nunc fringilla neque vitae odio. Vivamus vitae ligula.
Sample Question Heading
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi malesuada, ante at feugiat tincidunt, enim massa gravida metus, commodo lacinia massa diam vel eros. Proin eget urna. Nunc fringilla neque vitae odio. Vivamus vitae ligula.
完整演示代码:
