jQuery网站左侧固定下拉菜单特效代码

使用方法：

CSS样式部分

.leftsidebar_box{width:160px;height:auto !important;overflow:visible !important;position:fixed;height:100% !important;background-color:#3992d0;}
.line{height:2px;width:100%;background-image:url(images/left/line_bg.png);background-repeat:repeat-x;}
.leftsidebar_box dt{padding-left:40px;padding-right:10px;background-repeat:no-repeat;background-position:10px center;color:#f5f5f5;font-size:14px;position:relative;line-height:48px;cursor:pointer;}
.leftsidebar_box dd{background-color:#317eb4;padding-left:40px;}
.leftsidebar_box dd a{color:#f5f5f5;line-height:20px;}
.leftsidebar_box dt img{position:absolute;right:10px;top:20px;}
.system_log dt{background-image:url(images/left/system.png)}
.custom dt{background-image:url(images/left/custom.png)}
.channel dt{background-image:url(images/left/channel.png)}
.app dt{background-image:url(images/left/app.png)}
.cloud dt{background-image:url(images/left/cloud.png)}
.syetem_management dt{background-image:url(images/left/syetem_management.png)}
.source dt{background-image:url(images/left/source.png)}
.statistics dt{background-image:url(images/left/statistics.png)}
.leftsidebar_box dl dd:last-child{padding-bottom:10px;}

HTML结构部分

<div class="leftsidebar_box">
    <div class="line"></div>
    <dl class="system_log">
        <dt onClick="changeImage()">系统记录<img src="images/left/select_xl01.png"></dt>
        <dd class="first_dd"><a href="#">充值记录</a></dd>
        <dd><a href="#">短信充值记录</a></dd>
        <dd><a href="#">消费记录</a></dd>
        <dd><a href="#">操作记录</a></dd>
    </dl>
    <dl class="custom">
        <dt onClick="changeImage()">客户管理<img src="images/left/select_xl01.png"></dt>
        <dd class="first_dd"><a href="#">客户管理</a></dd>
        <dd><a href="#">试用/成交客户管理</a></dd>
        <dd><a href="#">未成交客户管理</a></dd>
        <dd><a href="#">即将到期客户管理</a></dd>
    </dl>
    <dl class="channel">
        <dt>渠道管理<img src="images/left/select_xl01.png"></dt>
        <dd class="first_dd"><a href="#">渠道主页</a></dd>
        <dd><a href="#">渠道标准管理</a></dd>
        <dd><a href="#">系统通知</a></dd>
        <dd><a href="#">渠道商管理</a></dd>
        <dd><a href="#">渠道商链接</a></dd>
    </dl>
    <dl class="app">
        <dt onClick="changeImage()">APP管理<img src="images/left/select_xl01.png"></dt>
        <dd class="first_dd"><a href="#">App运营商管理</a></dd>
        <dd><a href="#">开放接口管理</a></dd>
        <dd><a href="#">接口类型管理</a></dd>
    </dl>
    <dl class="cloud">
        <dt>大数据云平台<img src="images/left/select_xl01.png"></dt>
        <dd class="first_dd"><a href="#">平台运营商管理</a></dd>
    </dl>
    <dl class="syetem_management">
        <dt>系统管理<img src="images/left/select_xl01.png"></dt>
        <dd class="first_dd"><a href="#">后台用户管理</a></dd>
        <dd><a href="#">角色管理</a></dd>
        <dd><a href="#">客户类型管理</a></dd>
        <dd><a href="#">栏目管理</a></dd>
        <dd><a href="#">微官网模板组管理</a></dd>
        <dd><a href="#">商城模板管理</a></dd>
        <dd><a href="#">微功能管理</a></dd>
        <dd><a href="#">修改用户密码</a></dd>
    </dl>
    <dl class="source">
        <dt>素材库管理<img src="images/left/select_xl01.png"></dt>
        <dd class="first_dd"><a href="#">图片库</a></dd>
        <dd><a href="#">链接库</a></dd>
        <dd><a href="#">推广管理</a></dd>
    </dl>
    <dl class="statistics">
        <dt>统计分析<img src="images/left/select_xl01.png"></dt>
        <dd class="first_dd"><a href="#">客户统计</a></dd>
    </dl>
</div>

引入jQuery库文件

<script type="text/javascript" src="js/jquery.js"></script>

插件初始化、配置

$(".leftsidebar_box dt").css({"background-color":"#3992d0"});
$(".leftsidebar_box dt img").attr("src","images/left/select_xl01.png");
$(function(){
	$(".leftsidebar_box dd").hide();
	$(".leftsidebar_box dt").click(function(){
		$(".leftsidebar_box dt").css({"background-color":"#3992d0"})
		$(this).css({"background-color": "#317eb4"});
		$(this).parent().find('dd').removeClass("menu_chioce");
		$(".leftsidebar_box dt img").attr("src","images/left/select_xl01.png");
		$(this).parent().find('img').attr("src","images/left/select_xl.png");
		$(".menu_chioce").slideUp(); 
		$(this).parent().find('dd').slideToggle();
		$(this).parent().find('dd').addClass("menu_chioce");
	});
})