基于jQuery实现手风琴菜单、层级菜单、置顶菜单、无缝滚动效果
时间：2021-03-13 09:46:50 | 栏目：jquery | 点击：次
一、手风琴菜单效果图及代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>手风琴效果制作</title>
<link rel="stylesheet" href="../css/reset.css">
<style>
.con{
width:908px;
height:300px;
margin:50px auto;
overflow: hidden;
position:relative;
}
.con .list_ul{
}
.con .list_ul li{
width:805px;
height:300px;
position:absolute;
background:#fff;
}
.con .list_ul li span{
width:26px;
height:296px;
text-align: center;
color:#fff;
padding-top:4px;
float:left;
cursor: pointer;
}
.con .list_ul li img{
width:777px;
height:300px;
float:right;
}
.con .list_ul li:after{
display: table;
clear:both;
zoom:1;
content: '';
}
.con .list_ul li:nth-child(1){
left:0;
}
.con .list_ul li:nth-child(2){
left:801px;
}
.con .list_ul li:nth-child(3){
left:828px;
}
.con .list_ul li:nth-child(4){
left:855px;
}
.con .list_ul li:nth-child(5){
left:882px;
}
.con .list_ul li:nth-child(1) span{
background: rgba(8, 201, 160, 0.49);
}
.con .list_ul li:nth-child(2) span{
background: rgba(120, 201, 66, 0.97);
}
.con .list_ul li:nth-child(3) span{
background: rgb(77, 114, 201);
}
.con .list_ul li:nth-child(4) span{
background: rgb(255, 179, 18);
}
.con .list_ul li:nth-child(5) span{
background: rgb(201, 5, 166);
}
</style>
<script src="../js/jquery-1.12.4.min.js"></script>
<script>
$(function(){
$(".list_li").click(function(){
//左边
$(this).animate({left:26*$(this).index()});
//获取该li元素前面的兄弟元素，实现点击中间的部分，它前面的兄弟元素也跟着一起向左移动
$(this).prevAll().each(function(){
$(this).animate({left:26*$(this).index()});
});
//右边：获取该li元素后面的兄弟元素，实现点击中间的部分，它后面的兄弟元素也跟着一起向右移动
$(this).nextAll().each(function(){
$(this).animate({left:778+26*$(this).index()});
});
})
})
</script>
</head>
<body>
<div class="con">
<ul class="list_ul">
<li class="list_li">
<span>风景图01</span>
<img src="../images/li01.png" alt="风景图01">
</li>
<li class="list_li">
<span>风景图02</span>
<img src="../images/li02.png" alt="风景图02">
</li>
<li class="list_li">
<span>风景图03</span>
<img src="../images/li03.png" alt="风景图03">
</li>
<li class="list_li">
<span>风景图04</span>
<img src="../images/li04.png" alt="风景图04">
</li>
<li class="list_li">
<span>风景图05</span>
<img src="../images/li05.png" alt="风景图05">
</li>
</ul>
</div>
</body>
</html>
二、上卷下拉式（层级）菜单效果图和代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>用jQuery中的slideToggle制作菜单</title>
<link rel="stylesheet" href="../css/reset.css">
<style>
.menu{
width:200px;
margin:10px auto;
}
.menu>li{
background: #8731dd;
color:#fff;
text-indent: 16px;
margin-top:-1px;
cursor: pointer;
}
.menu>li>span{
padding:10px 0;
display:block;
border-bottom: 1px solid #f3f3f3;
}
.menuactive,.menu>li>span:hover{
background:#c7254e;
}
.menu > li ul{
display: none;
}
.menu > li ul li{
text-indent:20px;
background: #9a9add;
border:1px solid #f3f3f3;
margin-top:-1px;
padding:6px 0;
}
.menu >li .active{
display: block;
}
.menu > li ul li:hover{
background:#67C962;
}
.menu_li ul{
margin-bottom:1px;
}
</style>
<script src="../js/jquery-1.12.4.min.js"></script>
<script>
$(function () {
$(".menu_li>span").click(function(){
$(this).addClass("menuactive").parent().siblings().children("span").removeClass("menuactive");
$(this).next("ul").slideToggle();
$(this).parent().siblings().children("ul").slideUp();
})
})
</script>
</head>
<body>
<ul class="menu" id="menu">
<li class="menu_li">
<span class="menuactive">水果系列</span>
<ul class="active">
<li>苹果</li>
<li>梨子</li>
<li>葡萄</li>
<li>火龙果</li>
</ul>
</li>
<li class="menu_li">
<span>海鲜系列</span>
<ul>
<li>鱼</li>
<li>大虾</li>
<li>螃蟹</li>
<li>海带</li>
</ul>
</li>
<li class="menu_li">
<span>果蔬系列</span>
<ul>
<li>茄子</li>
<li>黄瓜</li>
<li>豆角</li>
<li>西红柿</li>
</ul>
</li>
<li class="menu_li">
<span>速冻食品</span>
<ul>
<li>水饺</li>
<li>冰淇淋</li>
</ul>
</li>
<li class="menu_li">
<span>肉质系列</span>
<ul>
<li>猪肉</li>
<li>羊肉</li>
<li>牛肉</li>
</ul>
</li>
</ul>
</body>
</html>
三、置顶菜单（当一个菜单到达页面顶部时，停在那）
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>置顶菜单</title>
<link rel="stylesheet" href="../css/reset.css" rel="external nofollow" >
<style>
.header{
width:960px;
height:200px;
margin:0 auto;
background: #ccc;
}
.header img{
width:100%;
height:200px;
}
.ul_list{
width:960px;
height:50px;
margin:0 auto;
text-align: center;
display: flex;
justify-content: space-between;/*实现子元素水平方向上平分*/
align-items: center;/*使子元素垂直方向上居中*/
background: #67C962;
}
.ul_list li{
width:160px;
height:50px;
line-height: 50px;
border:1px solid #ccc;
/*使边框合并*/
margin-right:-1px;
}
.ul_list li a{
color:#fff;
}
.ul_list li:hover{
background: #c7254e;
}
.ul_fixed{
position: fixed;
top:0;
}
.menu_pos{
width:960px;
height:50px;
margin:0 auto;
line-height: 50px;
display: none;
}
.con div{
width:958px;
height:300px;
line-height: 300px;
text-align: center;
margin:-1px auto 0;
border: 1px solid #ccc;
}
.footer{
height:300px;
}
.top{
width:38px;
height:38px;
border-radius: 35px;
background: #000;
color:#fff;
font-size:13px;
padding:8px;
text-align: center;
position: fixed;
right:100px;
bottom:20px;
display: none;
}
.top:hover{
cursor: pointer;
}
</style>
<script src="../js/jquery-1.12.4.min.js"></script>
<script>
$(function(){
var oLeft = ($(document).outerWidth(true)-$(".header").outerWidth())/2;
var oTop = $(".top");
$(window).scroll(function(){
if($(window).scrollTop() >= $(".header").outerHeight()){
$(".ul_list").addClass("ul_fixed").css({left:oLeft});
$(".menu_pos").show();
}else{
$(".ul_list").removeClass("ul_fixed");
$(".menu_pos").hide();
}
if($(window).scrollTop() >= 150){
oTop.fadeIn();
oTop.click(function(){
//第一种回到顶部的方式
//$(window).scrollTop(0);
//第二种回到顶部的方式(常用)
$("html,body").animate({scrollTop:0});
})
}else{
oTop.fadeOut();
}
});
})
</script>
</head>
<body>
<div class="header">
<img src="../images/li02.png" alt="banner图">
</div>
<ul class="ul_list">
<li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a></li>
<li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >新闻动态</a></li>
<li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >产品展示</a></li>
<li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >案例分析</a></li>
<li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >关注我们</a></li>
<li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >联系我们</a></li>
</ul>
<div class="menu_pos"></div>
<div class="con">
<div class="con_header">网站主内容一</div>
<div class="con_center">网站主内容二</div>
<div class="con_footer">网站主内容三一</div>
</div>
<div class="footer"></div>
<div class="top">回到顶部</div>
</body>
</html>
四、无缝滚动效果图及代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>无缝滚动</title>
<link rel="stylesheet" href="../css/reset.css">
<style>
.con{
width:662px;
margin:50px auto;
}
.con button{
width:100px;
height:36px;
line-height: 36px;
text-align: center;
border: none;
margin-left:20px;
}
.box{
width:655px;
height:135px;
margin:20px auto;
border:1px solid #ccc;
padding-left:10px;
padding-bottom:10px;
position: relative;
overflow: hidden;
}
.ul_list{
display: flex;
position: absolute;
left:0;
top:0;
padding: 10px;
}
.ul_list li{
width:120px;
height:120px;
border:1px solid #ccc;
margin-left:-1px;
margin-right:10px;
/*margin-top:10px;*/
}
.ul_list li img{
width:100%;
height:100px;
line-height: 100px;
}
</style>
<script src="../js/jquery-1.12.4.min.js"></script>
<script>
$(function(){
var oUl = $(".ul_list");
var oLeft = $(".left");
var oRight = $(".right");
var left = 0;
var delay = 2;
oUl.html(oUl.html()+oUl.html());
function move(){
left-=delay;
if(left<-667){
left = 0;
}
if(left>0){
left = -667;
}
oUl.css({left:left});
}
var timer =setInterval(move,30);
oLeft.click(function(){
delay =2;
});
oRight.click(function(){
delay = -2;
});
oUl.children().each(function(){
oUl.eq($(this).index()).mouseover(function(){
clearInterval(timer);
});
oUl.eq($(this).index()).mouseout(function(){
timer= setInterval(function(){
left-=delay;
if(left<-667){
left = 0;
}
if(left>0){
left = -667;
}
oUl.css({left:left});
},30);
})
})
})
</script>
</head>
<body>
<div class="con">
<button class="left">向左</button>
<button class="right">向右</button>
<div class="box clearfix">
<ul class="ul_list">
<li><img src="../images/furit_03.jpg" alt="第一张图片"></li>
<li><img src="../images/goods_08.jpg" alt="第二张图片"></li>
<li><img src="../images/furit_02.jpg" alt="第三张图片"></li>
<li><img src="../images/goods_05.jpg" alt="第四张图片"></li>
<li><img src="../images/furit_04.jpg" alt="第五张图片"></li>
</ul>
</div>
</div>
</body>
</html>
以上菜单涉及到的知识点如下：
四、jQuery
1、slideDown（）向下展示
2、slideUp（）向上卷起
3、slideToggle（）依次展开或卷起某个元素
五、jQuery链式调用
jquery对象的方法在执行完之后返回这个jquery对象，所有的jQuery对象的方法可以连起来写：
$("#div1").chlidren("ul").slideDown("fast").parent().siblings().chlidren("ul").slideUp("fase")
$("#div1").//id位div1的元素
.chlidren("ul") //该元素下的ul子元素
.slideDown("fast") //高度从零到实际高度来显示ul元素
.parent() //跳转到ul的父元素，也就是id为div1的元素
.siblings() //跳转div1元素同级的所有兄弟元素
.chlidren("ul") //查找这些兄弟元素中的ul子元素
.slideUp("fase") //从实际高度变换为零来隐藏ul元素
总结