老师帮我看看我的二级菜单的问题
来源：6-1 案例总结
Wonwayshon
2020-09-27 20:50:45
老师帮我看看，二级菜单内文字变化异常，还有二级菜单收回和菜单选中变色也有问题。
我还有一个问题，当onmouseover事件触发后会调用后面的function()；，如果onmouseover=function(){}所在的slideImg()函数没有被调用，触发时间是否会执行function内的内容呢，如果依然可以执行，那么可以把所有的时间都放到一个单独的函数内吗
<!DOCTYPE html>
<html>
<head>
<title>轮播图</title>
<link rel="stylesheet" type="text/css" href="css/stylesheet.css">
</head>
<body>
<div class="main" id="main">
<div class="menu-box"></div>
<div class="sub-menu hide" id="sub-menu">
<div class="inner-box">
<div class="sub-inner-box">
<div class="title">手机配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
</div>
</div>
<div class="inner-box">
<div class="sub-inner-box">
<div class="title">电器</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">手配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
</div>
</div>
<div class="inner-box">
<div class="sub-inner-box">
<div class="title">家具</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
</div>
</div>
<div class="inner-box">
<div class="sub-inner-box">
<div class="title">家具</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
</div>
</div>
<div class="inner-box">
<div class="sub-inner-box">
<div class="title">其他</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
<div class="title">配件</div>
<div class="sub-row">
<span class="bold mr10">手机通讯:</span>
<span class="mr10 ml10">手机维修</span>
<a href="#">手机</a>
</div>
</div>
</div>
</div>
<div class="menu-content" id="menu-content">
<div class="menu-item">
<a href="">
<span>手机、配件</span>
<i></i>
</a>
<a href="">
<span>手机、配件</span>
<i></i>
</a>
<a href="">
<span>手机、配件</span>
<i></i>
</a>
<a href="">
<span>手机、配件</span>
<i></i>
</a>
<a href="">
<span>手机、配件</span>
<i></i>
</a>
</div>
</div>
<!--图片-->
<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>
<a href="javascript:void(0)" class="button next" id="next"></a>
<!--圆点导航-->
<div class="dots" id="dots">
<span class="active"></span>
<span></span>
<span></span>
</div>
</div>
<script type="text/javascript" src="js/script.js"></script>
</body>
</html>
*{
margin: 0;
padding: 0;
}
@font-face{
font-family: "iconfont";
src: url("../images/font/iconfont.eot");
src: url("../images/font/iconfont.eot") format("embedded-opentype"),
url("../images/font/iconfont.woff") format("woff"),
url("../images/font/iconfont.ttf") format("truetype"),
url("../images/font/iconfont.svg#iconfog") format("svg");
}
a:link,a:visited{
text-decoration: none;
color: #333;
}
ul{
list-style: none;
}
body{
font-family: "微软雅黑";
color: #14191e;
}
.main{
width: 1200px;
height: 460px;
margin: 30px auto;
overflow: hidden;
position: relative;
}
.banner{
width: 1200px;
height: 460px;
overflow: hidden;
position: relative;
display: ;
}
.banner-slide{
width: 1200px;
height: 460px;
background-repeat: no-repeat;
position: absolute;
display: none;
}
.slide1{
background-image: url("../images/bg1.jpg");
}
.slide2{
background-image: url("../images/bg2.jpg");
}
.slide3{
background-image: url("../images/bg3.jpg");
}
.slide-active{
display: block;
}
.button{
width: 40px;
position: absolute;
height: 80px;
left:284px;
top: 50%;
margin: -40px;
background: url("../images/arrow.png") no-repeat center center;
}
.next{
left: auto;
right: 40px;
}
.prev{
transform: rotate(180deg);
}
.button:hover{
background-color: #333;
opacity: 0.8;
filter: alpha(opacity=80);
}
.dots{
position: absolute;
right: 0;
bottom: 24px;
text-align: right;
right: 10px;
}
.dots span{
display: inline-block;
width: 12px;
height: 12px;
background-color: rgba(7,17,27,0.4);
border-radius: 50%;
margin-right: 8px;
line-height: 12px;
box-shadow: 0 0 0 2px rgba(255,255,255,0.8) inset;
cursor: pointer;
}
.dots span.active{
box-shadow: 0 0 0 2px rgba(7,17,27,0.4) inset;
background: #fff;
}
.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;
}
.menu-content{
width: 244px;
height: 454px;
position: absolute;
left: 0;
top: 0;
z-index: 2;
padding-top: 6px;
}
.menu-item{
height: 64px;
line-height: 66px;
font-size: 16px;
padding: 0 24px;
}
.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;
position: relative;
}
.menu-item i{
font-family: "iconfont";
position: absolute;
right: 32px;
font-size: 24px;
top: 0;
font-style: normal;
font-weight: normal;
color: rgba(244,255,255,0.5);
}
.sub-menu{
width: 730px;
height: 458px;
border: 1px solid #d9dde1;
background: #fff;
position: absolute;
top: 0;
left: 244px;
z-index: 999;
box-shadow: 0 4px 8px 0 rgba(0,0,0,0.1);
}
.inner-box{
width: 100%;
height: 100%;
background:url(../images/fe.png) no-repeat;
}
.sub-inner-box{
width: 652px;
margin-left: 40px;
overflow: hidden;
}
.title{
color: #f01414;
font-size: 16px;
line-height: 16px;
margin: 28px 0 30px 0;
font-weight: bold;
}
.bold{
font-weight: bold;
}
.mr10{
margin-right: 10px;
}
.ml10{
margin-left: 10px;
}
.subrow{
margin-bottom: 25px;
}
.hide{
display: none;
}
var index=0,
timer=null,
dots=byId("dots").getElementsByTagName("span"),
pics=byId("banner").getElementsByTagName("div"),
prev=byId("prev"),
next=byId("next"),
menu=byId("menu-content"),
menuItems=menu.getElementsByClassName("menu-item"),
subMenu=byId("sub-menu"),
innerBox=subMenu.getElementsByClassName("inner-box"),
len=pics.length;
//代替getElementById
function byId(id){
return typeof(id)==="string"?document.getElementById(id):id;
}
function slideImg(){
var main=byId("main");
main.onmouseover=function(){
if(timer) clearInterval(timer);
}
main.onmouseout=function(){
timer=setInterval(function(){
index++;
if(index>=len){
index=0;
}
changeImg();
},3000)
}
main.onmouseout();
for(var d=0;d<len;d++){
dots[d].id=d;
dots[d].onclick=function(){
index=this.id;
changeImg();
}
}
next.onclick=function(){
index++;
if(index>=len){
index=0;
}
changeImg();
}
prev.onclick=function(){
index--;
if(index<0){
index=len-1;
}
changeImg();
}
for(var m=0;m<menuItems.length;m++){
menuItems[m].setAttribute("data-index",m)
menuItems[m].onmouseover=function(){
subMenu.className="sub-menu";
for(var j=0;j<innerBox.length;j++){
innerBox[j].style.display="none";
menuItems[j].style.background="none";
}
var idx=this.getAtribute("data-index");
innerBox[idx].style.display="block";
menuItems[idx].style.background="rgba(0,0,0,0.1)";
}
}
menu.onmouseout=function(){
subMenu.className="sub-menu hide";
}
subMenu.onmouseover=function(){
this.className="sub-menu";
}
subMenu.onmouseout=function(){
this.className="sub-menu hide";
}
}
function changeImg(){
//alert(index);
for(var i=0;i<len;i++){
pics[i].style.display="none";
dots[i].className="";
}
pics[index].style.display="block";
dots[index].className="active";
}
slideImg();写回答
1回答
-
同学你好
1，同学html中对菜单的设置上有些问题，下面的设置有的是跟其他的一样的，这里并不是一样的哦，同学可以对照源码以及老师的讲解修改一下，有些标签缺失了，导致在js中获取异常
2，如下单词书写有误，应该是getAttribute
3，如果不调用slideImg();，那么其中的方法都不会执行的
如果我的回答解决了你的疑惑，请采纳！祝学习愉快！
0
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