导航菜单鼠标移出一直有黑色背景
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528 529 530 531 532 533 534 535 | <!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>综合实例</title> <link type="text/css" rel="styleSheet" href="css/css.css" /></head><body> <div class="main" id="main"> <div class="menu-box"></div><!--导航栏设置透明度，在里面写东西也会透明，另起div--> <!--主菜单--> <div class="menu-content" id="menu-content"> <div class="menu-item"> <a href=""> <span>手机、配件</span> <i></i> </a> </div> <div class="menu-item"> <a href=""> <span>电脑</span> <i></i> </a> </div> <div class="menu-item"> <a href=""> <span>家用电器</span> <i></i> </a> </div> <div class="menu-item"> <a href=""> <span>家具</span> <i></i> </a> </div> </div> <!--子菜单--> <div class="sub-menu hide" id="sub-menu"> <!--手机、配件--> <div class="inner-box"> <div class="sub-inner-box"> <!--标题--> <div class="title">手机、配件</div> <div class="sub-row"> <span class="bold mr10">手机通讯：</span> <a href="">手机</a> <span class="mr10 ml10">/</span> <a href="">手机维修</a> <span class="mr10 ml10">/</span> <a href="">以旧换新</a> </div> <div class="sub-row"> <span class="bold mr10">手机配件：</span> <a href="">手机壳</a> <span class="ml10 mr10">/</span> <a href="">手机存储卡</a> <span class="ml10 mr10">/</span> <a href="">数据线</a> <span class="ml10 mr10">/</span> <a href="">充电器</a> <span class="ml10 mr10">/</span> <a href="">电池</a> </div> <div class="sub-row"> <span class="bold mr10">运营商：</span> <a href="">中国联通</a> <span class="ml10 mr10">/</span> <a href="">中国移动</a> <span class="ml10 mr10">/</span> <a href="">中国电信</a> </div> <div class="sub-row"> <span class="bold mr10">智能设备：</span> <a href="">智能手环</a> <span class="ml10 mr10">/</span> <a href="">智能家居</a> <span class="ml10 mr10">/</span> <a href="">智能手表</a> <span class="ml10 mr10">/</span> <a href="">其他配件</a> </div> <div class="sub-row"> <span class="bold mr10">娱乐：</span> <a href="">耳机</a> <span class="ml10 mr10">/</span> <a href="">音响</a> <span class="ml10 mr10">/</span> <a href="">收音机</a> <span class="ml10 mr10">/</span> <a href="">麦克风</a> </div> </div> </div> <!--电脑--> <div class="inner-box"> <div class="sub-inner-box"> <div class="title">电脑</div> <div class="sub-row"> <span class="bold mr10">电脑：</span> <a href="">笔记本</a> <span class="ml10 mr10">/</span> <a href="">平板</a> <span class="ml10 mr10">/</span> <a href="">一体机</a> </div> <div class="sub-row"> <span class="bold mr10">电脑配件：</span> <a href="">显示器</a> <span class="ml10 mr10">/</span> <a href="">CPU</a> <span class="ml10 mr10">/</span> <a href="">主板</a> <span class="ml10 mr10">/</span> <a href="">硬盘</a> <span class="ml10 mr10">/</span> <a href="">电源</a> <span class="ml10 mr10">/</span> <a href="">显卡</a> <span class="ml10 mr10">/</span> <a href="">其他配件</a> </div> <div class="sub-row"> <span class="bold mr10">游戏设备：</span> <a href="">游戏机</a> <span class="ml10 mr10">/</span> <a href="">耳机</a> <span class="ml10 mr10">/</span> <a href="">游戏软件</a> </div> <div class="sub-row"> <span class="bold mr10">网络产品：</span> <a href="">路由器</a> <span class="ml10 mr10">/</span> <a href="">网络机顶盒</a> <span class="ml10 mr10">/</span> <a href="">交换机</a> <span class="ml10 mr10">/</span> <a href="">存储卡</a> <span class="ml10 mr10">/</span> <a href="">网卡</a> </div> <div class="sub-row"> <span class="bold mr10">外部产品：</span> <a href="">鼠标</a> <span class="ml10 mr10">/</span> <a href="">键盘</a> <span class="ml10 mr10">/</span> <a href="">U盘</a> <span class="ml10 mr10">/</span> <a href="">移动硬盘</a> <span class="ml10 mr10">/</span> <a href="">鼠标垫</a> <span class="ml10 mr10">/</span> <a href="">电脑清洁</a> </div> </div> </div> <!--家用电器--> <div class="inner-box"> <div class="sub-inner-box"> <div class="title">家用电器</div> <div class="sub-row"> <span class="bold mr10">电视：</span> <a href="">国产品牌</a> <span class="ml10 mr10">/</span> <a href="">韩国品牌</a> <span class="ml10 mr10">/</span> <a href="">欧美品牌</a> </div> <div class="sub-row"> <span class="bold mr10">空调：</span> <a href="">显示器</a> <span class="ml10 mr10">/</span> <a href="">柜式</a> <span class="ml10 mr10">/</span> <a href="">中央</a> <span class="ml10 mr10">/</span> <a href="">壁挂式</a> </div> <div class="sub-row"> <span class="bold mr10">冰箱：</span> <a href="">多门</a> <span class="ml10 mr10">/</span> <a href="">对开门</a> <span class="ml10 mr10">/</span> <a href="">三门</a> <span class="ml10 mr10">/</span> <a href="">双门</a> </div> <div class="sub-row"> <span class="bold mr10">洗衣机：</span> <a href="">滚筒式洗衣机</a> <span class="ml10 mr10">/</span> <a href="">迷你洗衣机</a> <span class="ml10 mr10">/</span> <a href="">洗烘一体机</a> </div> <div class="sub-row"> <span class="bold mr10">厨房电器：</span> <a href="">油烟机</a> <span class="ml10 mr10">/</span> <a href="">洗碗机</a> <span class="ml10 mr10">/</span> <a href="">燃气灶</a> </div> </div> </div> <!--家具--> <div class="inner-box"> <div class="sub-inner-box"> <div class="title">家具</div> <div class="sub-row"> <span class="bold mr10">家纺：</span> <a href="">被子</a> <span class="ml10 mr10">/</span> <a href="">枕头</a> <span class="ml10 mr10">/</span> <a href="">四件套</a> <span class="ml10 mr10">/</span> <a href="">床垫</a> </div> <div class="sub-row"> <span class="bold mr10">灯具：</span> <a href="">台灯</a> <span class="ml10 mr10">/</span> <a href="">顶灯</a> <span class="ml10 mr10">/</span> <a href="">节能灯</a> <span class="ml10 mr10">/</span> <a href="">应急灯</a> </div> <div class="sub-row"> <span class="bold mr10">厨具：</span> <a href="">烹饪锅具</a> <span class="ml10 mr10">/</span> <a href="">餐具</a> <span class="ml10 mr10">/</span> <a href="">菜板刀具</a> </div> <div class="sub-row"> <span class="bold mr10">家装：</span> <a href="">地毯</a> <span class="ml10 mr10">/</span> <a href="">沙发垫套</a> <span class="ml10 mr10">/</span> <a href="">装饰字画</a> <span class="ml10 mr10">/</span> <a href="">照片墙</a> <span class="ml10 mr10">/</span> <a href="">窗帘</a> </div> <div class="sub-row"> <span class="bold mr10">生活日用：</span> <a href="">收纳用品</a> <span class="ml10 mr10">/</span> <a href="">浴室用品</a> <span class="ml10 mr10">/</span> <a href="">雨伞雨衣</a> </div> </div> </div> </div> <!--图片轮播--> <div class="banner" id="banner"> <a href=""> <div class="banner-slide slide1 slide-active"></div> </a> <a href=""> <div class="banner-slide slide2"></div> </a> <a href=""> <div class="banner-slide slide3"></div> </a> </div> <!--上一张、下一张按钮--> <a href="JavaScript:void(0)" class="button prev" id="prev"></a> // href意思是a是不做任何超链接跳转 <a href="JavaScript:void(0)" class="button next" id="next"></a> // href意思是a是不做任何超链接跳转 <!--圆点导航--> <div class="dots" id="dots"> <span class="active"></span> <span></span> <span></span> </div> </div> <script src="js/js.js"></script></body></html>/*通用设置*/* { margin: 0; padding: 0;}body { font-family: "微软雅黑"; color: #14191e; background: #000000;}a:link,a:visited { text-decoration: none; color: #333;}@font-face { font-family: "iconfont"; src: url("../img/font/iconfont.eot"); src: url("../img/font/iconfont.eot") format("embedded-opentype"), url("../img/font/iconfont.woff") format("woff"), url("../img/font/iconfont.ttf") format("truetype"), url("../img/font/iconfont.svg#iconfog") format("svg");}ul { list-style: none;}/*大父级框*/.main { width: 1200px; height: 460px; margin: 30px auto; overflow: hidden; position: relative;}/*轮播图图片框*/.banner { width: 1200px; height: 460px; position: relative;}.banner-slide { width: 1200px; height: 460px; background-repeat: no-repeat; position: absolute; display: none;}/*显示第一张图片*/.slide-active { display: block;}/*插入背景图片*/.slide1 { background-image: url("../img/bg1.jpg");}.slide2 { background-image: url("../img/bg2.jpg");}.slide3 { background-image: url("../img/bg3.jpg");}/*左右按钮区域*/.button { position: absolute; width: 40px; height: 80px; left: 244px; top: 50%; margin-top: -40px; background: url("../img/arrow.png") no-repeat center center;}.button:hover { background-color: #333; opacity: 0.3; /*透明度*/ filter: alpha(opacity = 80); /*浏览器兼容*/}.prev { transform: rotate(180deg); /*deg是度数的意思;*/}.next { left: auto; right: 0;}/*圆点导航*/.dots { position: absolute; right: 40px; bottom: 24px; text-align: right;}.dots span { display: inline-block; width: 12px; height: 12px; line-height: 12px; border-radius: 50%; background-color: rgba(17,17,27,0.4); box-shadow: 0 0 0 2px rgba(255,255,255,0.8) inset; /*阴影的水平方向、阴影的垂直方向、阴影的距离、模糊程度、阴影的颜色、内置阴影*/ margin-left: 8px; cursor: pointer;}/*第一个小圆点、当前小圆点*/.dots .active { box-shadow: 0 0 0 2px rgba(7,17,27,0.4) inset; background: #fff;}/*导航栏*//*大透明框*/.menu-box { width: 244px; height: 460px; position: absolute; left: 0; top: 0; background: rgba(7, 17, 27, 0.5); opacity: 0.5; z-index: 1;}/*文字部分大div*/.menu-content { width: 244px; height: 454px; position: absolute; left: 0; top: 0; z-index: 2; padding-top: 6px;}/*每一行文字部分*/.menu-item { height: 64px; line-height: 66px; font-size: 16px; padding: 0 24px; position: relative;}.menu-item a:link,.menu-item a:visited { color: #fff;}.menu-item a { display: block; border-bottom: 1px solid rgba(255,255,255,0.2); padding: 0 8px; height: 63px;}/*小图标*/.menu-item i { position: absolute; right: 32px; font-size: 24px; top: 0; font-family: "iconfont"; font-style: normal; /*i标签有自动倾斜（取消倾斜）*/ font-weight: normal; /*i标签有自动倾斜（取消倾斜）*/ color: rgba(255,255,255,0.5);}/*子菜单*//*子菜单父盒子*/.sub-menu { width: 730px; height: 460px; border: 1px solid #d9dde1; background: #fff; position: absolute; left: 244px; top: 0; z-index: 999; /*阴影 水平方向 垂直方向 阴影的距离 模糊度 颜色*/ box-shadow: 0 4px 8px 0 rgba(0,0,0,0.3);}/*子菜单子盒子*//*手机、配件*/.inner-box { width: 100%; height: 100%; background: url("../img/fe.png"); display: none;}.sub-inner-box { width: 652px; margin-left: 40px; overflow: hidden;}/*标题*/.title { color: #f01414; font-size: 16px; line-height: 16px; margin: 28px 0 30px 0; font-weight: bold;}.sub-row { margin-bottom: 25px;}.bold { font-weight: bold;}.mr10 { margin-right: 10px;}.ml10 { margin-left: 10px;}/*隐藏子菜单*/.hide { display: none;} |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | // 封装一个代替getElementById()的方法function byId(id) { // tupeof判断id是否为字符串，用三目运算返回 return typeof(id) === "string"?document.getElementById(id):id;}// 设置一全局变量来获取当前的图片位置var index = 0, timer = null, pics = byId("banner").getElementsByTagName("div"), // 把这几个div放到数组当中 dots = byId("dots").getElementsByTagName("span"), // 小圆点 prev = byId("prev"), next = byId("next"), len = pics.length, menu = byId("menu-content"), subMenu = byId("sub-menu"), innerBox = subMenu.getElementsByClassName("inner-box"), menuItems = menu.getElementsByClassName("menu-item");function slideImg() { var main = byId("main"); // 划过清除定时器，离开继续 main.onmouseover = function () { // 划过清除定时器 if (timer) clearInterval(timer); }; // 划入一下开起切换 main.onmouseout = function () { // setTimeout()超市定时器 timer = setInterval(function () { index++; // 必须在第一行，在后面判断 if (index >= len) { index = 0; } // 切换图片 changeImg(); }, 3000); }; // 自动在main上触发鼠标离开的事件 main.onmouseout(); // 遍历所有点击，且绑定点击事件，点击圆点切换图片 for (var d = 0; d < len; d++) { // 给所有span添加一个id的属性，值为d，作为当前的span的索引 dots[d].id = d; dots[d].onclick = function () { // 改变index为当前span的id值 // alert(this.id); // 弹出当前id index = this.id; // 调用changeImg，实现切换图图片 changeImg(); } } // 下一张 next.onclick = function () { index++; if (index >= len) { index = 0; } changeImg(); } // 上一张 prev.onclick = function () { index--; if (index < 0) { // 当index下标是第一张0的时候--进入判断，len长度-1是最后一张下标 index = len-1; } changeImg(); } // 导航菜单 // 遍历主菜单，且绑定时间 for (var m=0;m<menuItems.length;m++) { // 没每一个menu-item定义data-index属性，作为索引 menuItems[m].setAttribute("data-index",m); menuItems[m].onmouseover = function () { subMenu.className = "sub-menu"; var idx = this.getAttribute("data-index"); // 遍历所有子菜单，将每一个都隐藏 for (var j=0;j<innerBox.length;j++) { innerBox[j].style.display = 'none'; menuItems[j].style.background = 'none'; } menuItems[idx].style.background = 'rgba(0,0,0,0.1)'; innerBox[idx].style.display = 'block'; } } menu.onmouseout = function () { subMenu.className = "sub-menu hide"; }; subMenu.onmouseover = function () { this.className = "sub-menu"; }; subMenu.onmouseout = function () { this.className = "sub-menu hide"; }}// 切换图片function changeImg() { // 遍历banner下多有的div，将其隐藏 // 遍历dots下所有的span，将div隐藏，将span清除类 for (var i = 0; i < len; i++){ pics[i].style.display = "none"; dots[i].className = ""; } // 根据index索引找到当前div，将其显示出来设为当前 pics[index].style.display = 'block'; // 根据index索引找到当前span，将其显示出来设为当前 dots[index].className = "active";}slideImg(); |
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你好同学，测试了你的代码，按照之前老师的回复，是可以达到你所描述的效果的，
js中的代码如下，你可以将js中的全部代码粘贴到你的编译器中试试。如果有问题还可以继续提问哦，祝学习愉快~
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 | // 封装一个代替getElementById()的方法function byId(id) { // tupeof判断id是否为字符串，用三目运算返回 return typeof(id) === "string"?document.getElementById(id):id;} // 设置一全局变量来获取当前的图片位置var index = 0, timer = null, pics = byId("banner").getElementsByTagName("div"), // 把这几个div放到数组当中 dots = byId("dots").getElementsByTagName("span"), // 小圆点 prev = byId("prev"), next = byId("next"), len = pics.length, menu = byId("menu-content"), subMenu = byId("sub-menu"), innerBox = subMenu.getElementsByClassName("inner-box"), menuItems = menu.getElementsByClassName("menu-item"); function slideImg() { var main = byId("main"); // 划过清除定时器，离开继续 main.onmouseover = function () { // 划过清除定时器 if (timer) clearInterval(timer); }; // 划入一下开起切换 main.onmouseout = function () { // setTimeout()超市定时器 timer = setInterval(function () { index++; // 必须在第一行，在后面判断 if (index >= len) { index = 0; } // 切换图片 changeImg(); }, 3000); }; // 自动在main上触发鼠标离开的事件 main.onmouseout(); // 遍历所有点击，且绑定点击事件，点击圆点切换图片 for (var d = 0; d < len; d++) { // 给所有span添加一个id的属性，值为d，作为当前的span的索引 dots[d].id = d; dots[d].onclick = function () { // 改变index为当前span的id值 // alert(this.id); // 弹出当前id index = this.id; // 调用changeImg，实现切换图图片 changeImg(); } } // 下一张 next.onclick = function () { index++; if (index >= len) { index = 0; } changeImg(); } // 上一张 prev.onclick = function () { index--; if (index < 0) { // 当index下标是第一张0的时候--进入判断，len长度-1是最后一张下标 index = len-1; } changeImg(); } // 导航菜单 // 遍历主菜单，且绑定时间 for (var m=0;m<menuItems.length;m++) { // 没每一个menu-item定义data-index属性，作为索引 menuItems[m].setAttribute("data-index",m); menuItems[m].onmouseover = function () { subMenu.className = "sub-menu"; var idx = this.getAttribute("data-index"); // 遍历所有子菜单，将每一个都隐藏 for (var j=0;j<innerBox.length;j++) { innerBox[j].style.display = 'none'; menuItems[j].style.background = 'none'; } menuItems[idx].style.background = 'rgba(0,0,0,0.1)'; innerBox[idx].style.display = 'block'; } } // menu.onmouseout = function () { // subMenu.className = "sub-menu hide"; // }; menu.onmouseout = function () { subMenu.className = "sub-menu hide"; for(var m=0;m<menuItems.length;m++){ menuItems[m].style.background = 'none'; } }; subMenu.onmouseover = function () { this.className = "sub-menu"; }; subMenu.onmouseout = function () { this.className = "sub-menu hide"; }} // 切换图片function changeImg() { // 遍历banner下多有的div，将其隐藏 // 遍历dots下所有的span，将div隐藏，将span清除类 for (var i = 0; i < len; i++){ pics[i].style.display = "none"; dots[i].className = ""; } // 根据index索引找到当前div，将其显示出来设为当前 pics[index].style.display = 'block'; // 根据index索引找到当前span，将其显示出来设为当前 dots[index].className = "active";} slideImg(); |
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