jquery+css实现左侧侧边栏下拉多级菜单导航效果代码-html代码-BFW代码库

代码语言：html

代码描述：jquery+css实现左侧侧边栏下拉多级菜单导航效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title></title>

    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery-3.2.1.min.js"></script>

    <!--阿里图标库-->
    <link rel="stylesheet" type="text/css" href="//at.alicdn.com/t/font_1632750_204xwxiwzht.css?1583918713" />

    <style>
        /*默认样式*/
    html, body, div, ul, li, h1, h2, h3, h4, h5, h6, p, dl, dt, dd, ol, form, input, textarea, th, td, select {
        margin: 0;
        padding: 0;
    }
    
    * {
        box-sizing: border-box;
    }
    
    html, body {
        min-height: 100%;
    }
    
    body {
        font-family: "Microsoft YaHei";
        font-size: 0.3rem;
        color: #333;
    }
    
    h1, h2, h3, h4, h5, h6 {
        font-weight: normal;
    }
    
    ul, ol {
        list-style: none;
    }
    
    img {
        border: none;
        vertical-align: middle;
    }
    
    a {
        text-decoration: none;
        color: #232323;
    }
    
    table {
        border-collapse: collapse;
        table-layout: fixed;
    }
    
    input, textarea {
        outline: none;
        border: none;
    }
    
    textarea {
        resize: none;
        overflow: auto;
    }
    
    .clearfix {
        zoom: 1;
    }
    
    .clearfix:after {
        content: ".";
        width: 0;
        height: 0;
        visibility: hidden;
        display: block;
        clear: both;
        overflow: hidden;
    }
    
    .fl {
        float: left
    }
    
    .fr {
        float: right
    }
    
    .tl {
        text-align: left;
    }
    
    .tc {
        text-align: center
    }
    
    .tr {
        text-align: right;
    }
    
    .ellipse {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .inline {
        display: inline-block;
        *display: inline;
        *zoom: 1;
    }
    .body_con{
        width: 100%;
        height: 100%;
        position: relative;
        font-size: 0;
    }
    .body_top{
        width: 100%;
        height: 60px;
        background: #1d8ff0;
        color: #fff;
        font-size: 24px;
        line-height: 60px;
        text-align: center;
    }
    .body_left{
        width:200px;
        height: 1100px;
        display: inline-block;
        vertical-align: top;
        background:#333951;
        position: relative;
        font-size: 18px;
        color: #fff;
    }
    .body_right{
        width: calc(100% - 200px);
        height: 1100px;
        display: inline-block;
        vertical-align: top;
        background:#f3faff;
        font-size: 32px;
        color: #999;
        text-align: center;
        line-height: 900px;
    }
    
    .body_left_list{
        width: 100%;
        min-height: 1rem;
        position: relative;
    }
    .body_left_list >li{
        width: 100%;
        min-height: 1px;
        overflow: hidden;
        border-bottom: 1px solid #333951;
        transition:all 0.5s;
        max-height: 1500px;
    }
    .body_left_list >li >label{
        width: 100%;
        height: 40px;
        line-height: 40px;
        position: relative;
        color: #fff;
        font-size:16px;
        background: #292e41;
        display: block;
    }
    .body_left_list >li >label >span{
        padding: 0 20px;
        width: 150px;
        color: #fff;
        font-size:16px;
        display: inline-block;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }
    .body_left_list >li >label >a{
        width: 100%;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        z-index: 1;
    }
    .body_left_list >li >label >i{
        position: absolute;
        top: 0;
        right:25px;
        font-size: 11px;
    }
    .body_left_list >li >ul{
        width: 100%;
        min-height: 1px;
        position: relative;
    }
    .body_left_list >li >ul >li{
        width: 100%;
        max-height: 50px;
        overflow: hidden;
        transition: all 0.5s;
    }
    .body_left_list >li >ul >li:hover{
        max-height: calc(200 * 8px);
    }
    .body_left_list >li >ul >li >label{
        width: 100%;
        height: 50px;
        background:#333951;
        line-height: 50px;
        position: relative;
        transition: all 0.5s;
        display: block;
    }
    .body_left_list >li >ul >li:hover >label{
        background: #151b32;
        border-left: 6px solid #1D8FF0;
    }
    .body_left_list >li >ul >li:hover >label >i:nth-child(3){
        transform: rotate(90deg);
    }
    .body_left_list >li >ul >li >label >i:nth-child(1){
        padding-left:  30px;
        font-size: 20px;
        display: inline-block;
        vertical-align: top;
    }
    .body_left_list >li >ul >li >label >span{
       font-size: 15px;
        color: #a1a3ab;
        width: 90px;
        display: inline-block;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }
    .body_left_list >li >ul >li >label >i:nth-child(3){
        position: absolute;
        top: 0;
        right:25px;
    }
    .body_left_list >li >ul >li >label >a{
        width: 100%;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        z-index: 1;
    }
    .body_left_list >li >ul >li >ul{
        width: 100%;
        min-height: 1px;
    }
    .body_left_list >li >ul >li >ul >li{
        max-height: 40px;
        transition: all 0.5s;
        overflow: hidden;
        position: relative;
    }
    .body_left_list >li >ul >li >ul >li:hover{
        max-height: calc(200 * 8px);
    }
    .body_left_list >li >ul >li >ul >li >label{
        width: 100%;
        height:40px;
        background: #3a3e50;
        position: relative;
        line-height: 40px;
        display: block;
        transition: all 0.5s;
    }
    .body_left_list >li >ul >li >ul >li:hover >label >span{
        color: #fff;
    }
    .body_left_list >li >ul >li >ul >li:hover ul{
        display: block;
    }
    .body_left_list >li >ul >li >ul >li:hover >label >i{
        color: #fff;
    }
    .body_left_list >li >ul >li >ul >li >label >span{
        font-size:14px;
        padding-left: 70px;
        color: #a1a3ab;
        width: 150px;
        display: block;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }
    .body_left_list >li >ul >li >ul >li >label >i{
        position: absolute;
        top: 0;
        right:25px;
        font-size: 14px;
    }
    .body_left_list >li >ul >li >ul >li >label >a{
        width: 100%;
        height: 100%;
        position: absolute;
        top: 2px;
        left.........完整代码请登录后点击上方下载按钮下载查看