本文实例为大家分享了js实现点击按钮切换轮播图的具体代码,供大家参考,具体内容如下
菜单区域实现
划过主菜单显示子菜单
轮播区域实现
1、点击图片中左右箭头,分别跳转上一张与下一张
(1)点击上一张图其实就是让一个变量进行递减,点击下一张图就是让变量递增;(控制索引最大最小值)
2、点击右下角小圆也可以进行图片的跳转
(1)通过索引让变量进行随意的修改
3、每间隔3s进行轮播图的自动切换,鼠标放在图片上清除自动切换
(1)定时器
4、鼠标放在主菜单上显示子菜单,离开子菜单消失。
放在子菜单上显示子菜单,离开消失。
源代码:
html
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|
<!DOCTYPE html>
< html lang = "en" >
< head >
< meta charset = "UTF-8" >
< title >轮播图</ title >
< link rel = "stylesheet" type = "text/css" href = "css/style.css" />
< script type = "text/javascript" src = "js/script.js" ></ script >
</ head >
< body >
< div class = "main" id = "main" >
<!-- 主菜单背景 -->
< div class = "menu-box" ></ div >
<!-- 主菜单 -->
< div class = "menu-content" id = "menu-content" >
< div class = "menu-item" >
< a href = "" >
< span >手机、配件</ span >
< i class = "icon" ></ i >
</ a >
</ div >
< div class = "menu-item" >
< a href = "" >
< span >电脑</ span >
< i class = "icon" ></ i >
</ a >
</ div >
< div class = "menu-item" >
< a href = "" >
< span >家用电器</ span >
< i class = "icon" ></ i >
</ a >
</ div >
< div class = "menu-item" >
< a href = "" >
< span >家具</ span >
< i class = "icon" ></ i >
</ a >
</ div >
</ div >
<!-- 子菜单 -->
< div class = "sub-menu hide" id = "sub-menu" >
<!-- 子菜单背景 -->
< div class = "inner-box" >
<!-- 子菜单内容 -->
< 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 >
< a href = "" >手机</ a >
< span class = "ml10 mr10" >/</ span >
< a href = "" >手机维修</ a >
< span class = "ml10 mr10" >/</ 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 = "" >手机储蓄卡</ 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 >
< 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 >
< 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 = "" >*</ 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 = "" >抽烟机</ 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 >
< 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 >
<!-- 焦点图 -->
< div class = "banner" id = "banner" >
<!-- 鼠标悬停停止自动轮播的区域 -->
< section class = "cease" id = "cease" ></ section >
< a href = "" >
< div class = "banner-slide slide1" ></ div >
</ a >
< a href = "" >
< div class = "banner-slide slide2" ></ div >
</ a >
< a href = "" >
< div class = "banner-slide slide3" ></ div >
</ a >
</ div >
<!-- 按钮 -->
< a href = "javascript:void(0)" class = "button prev" id = "prev" ></ a >
< a href = "javascript:void(0)" class = "button next" id = "next" ></ a >
< div class = "dots" id = "dots" >
< span class = "active" ></ span >
< span ></ span >
< span ></ span >
</ div >
</ div >
</ body >
</ html >
|
css
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|
*{
margin : 0 ;
padding : 0 ;
}
/*通配符选择器,外边距,内边距为0*/
body{
font-family : "微软雅黑" ;
color : #14191e ;
}
/*字体,字体颜色*/
@font-face{
font-family : 'iconfont' ; /*自定义名称,要有意义,不准数字*/
src : url ( '../font/iconfont.eot' ); /*兼容ie9以上版本*/
src : url ( '../font/iconfont.eot?#iefix' ) format ( 'embedded-opentype' ), /*兼容ie6-8版本*/
url ( '../font/iconfont.ttf' ) format ( 'truetype' ), /*主要针对手机端浏览器 safari android ios*/
url ( '../font/iconfont.woff' ) format ( 'woff' ), /*兼容所有浏览器 */
url ( '../font/iconfont.svg#iconfont' ) format ( 'svg' ); /*针对ios端开发 legacy ios*/
/* font-weight: bold;<字体加粗>
font-style: normal;默认的正常显示*/
}
/*获取下载的字体*/
a{
text-decoration : none ;
}
/*没有下划线*/
a:link,a:visited{
color : #5e5e5e ;
}
/*联合选择器,未访问连接时与已经访问链接时的字体颜色*/
.main{
width : 1200px ;
height : 460px ;
margin : 30px auto ;
overflow : hidden ;
position : relative ;
}
/*最大框架:宽;高;外边距,上下30px,左右居中;溢出的部分隐藏;相对定位*/
.banner{
width : 1200px ;
height : 460px ;
overflow : hidden ;
cursor : pointer ;
}
/*焦点图:宽;高;溢出的部分隐藏;小手标志*/
.banner-slide{
width : 1200px ;
height : 460px ;
float : right ;
background-repeat : no-repeat ;
display : none ;
}
/*三个图片:宽;高;右浮动,背景不重复;全部隐藏*/
.slide 1 {
background-image : url (../img/bg 1 .jpg);
display : block ;
}
/*第一个图片;块级元素显示*/
.slide 2 {
background-image : url (../img/bg 2 .jpg);
}
/*第二个图片*/
.slide 3 {
background-image : url (../img/bg 3 .jpg);
}
/*第三个图片*/
.button{
position : absolute ;
width : 40px ;
height : 80px ;
right : 0 ;
background : url (../img/arrow.png) center center no-repeat ;
top : 50% ;
margin-top : -40px ;
}
/*左右两个按钮;宽;高;相对main绝对定位,距右0,距上50%;背景图片,水平垂直居中,不重复;外上边距-40px;*/
.button:hover{
background-color : #333 ;
opacity: 0.8 ;
filter: alpha(opacity= 80 );
}
/*鼠标悬浮在上面时状态:背景颜色,透明度。照顾IE浏览器*/
.prev{
left : 244px ;
-webkit-transform: rotate( 180 deg);
-moz-transform: rotate( 180 deg);
-ms-transform: rotate( 180 deg);
-o-transform: rotate( 180 deg);
transform: rotate( 180 deg);
}
/*左按钮相对上面:靠左244px,定位左的优先级高于右;旋转180度*/
.dots{
position : absolute ;
right : 24px ;
bottom : 24px ;
line-height : 12px ;
}
/*下面三个选择圆:相对main绝对定位,距右,距下,行间距12px;*/
.dots span{
display : inline- block ;
width : 12px ;
height : 12px ;
border-radius: 50% ;
background-color : rgba( 7 , 17 , 27 ,. 4 );
margin-left : 8px ;
box-shadow: 0 0 0 2px rgba( 255 , 255 , 255 ,. 8 ) inset ;
cursor : pointer ;
}
/*子孙后代选择器:转换为块级元素并列一排;宽;高;削圆;背景颜色;外左边距,让他们之间有距离;盒子阴影,水平偏移量,垂直偏移量,模糊度,扩展多少,颜色模糊度,内阴影;小手标志*/
.dots .active{
background-color : #fff ;
box-shadow: 0 0 0 2px rgba( 255 , 255 , 255 ,. 4 ) inset ;
}
/*背景颜色,同上*/
.menu-box{
position : absolute ;
left : 0 ;
top : 0 ;
width : 244px ;
height : 460px ;
background : rgba( 7 , 17 , 27 ,. 3 );
z-index : 1 ;
}
/*主菜单背景,相对main绝对定位,左上偏移;宽;高;背景颜色模糊度;层叠模式数字大的在上面显示*/
.menu-content{
position : absolute ;
left : 0 ;
top : 0 ;
width : 244px ;
height : 460px ;
z-index : 2 ;
}
/*主菜单(因为菜单不需要模糊度所以单独拿出来设置css样式)*/
.menu-item{
height : 64px ;
line-height : 66px ;
cursor : pointer ;
padding : 0 24px ;
}
/*主菜单的每个标题,宽;行间距;因为是链接,浮在上面显示小手标志;内边距,上下0,左右24px;下划线两边留空*/
.menu-item a{
display : block ;
color : #fff ;
font-size : 16px ;
border-bottom : 1px solid rgba( 255 , 255 , 255 ,. 2 );
height : 63px ;
position : relative ;
}
/*转换为块级元素;字体颜色;字体大小;下边框,粗细,实线,颜色透明度;高;相对定位*/
.menu-item:last-child a{
border-bottom : none ;
}
/*menu-item的最后一个元素a;没有下边框*/
.menu-item i{
position : absolute ;
right : 12px ;
top : 2px ;
color : rgba( 255 , 255 , 255 ,. 5 );
font-style : normal ;
font-weight : normal ;
font-family : "iconfont" ;
font-size : 24px ;
}
/*子孙后代选择器:相对a绝对定位;右下偏移;字体颜色模糊度;没有斜体;没有加粗;字体;字体大小*/
.sub-menu{
width : 730px ;
height : 458px ;
position : absolute ;
left : 244px ;
top : 0 ;
background : #fff ;
z-index : 50 ;
border : 1px solid #d9dde1 ;
box-shadow: 0 4px 8px 0px rgba( 0 , 0 , 0 ,. 1 );
}
/*子菜单:宽;高;相对main绝对定位,左上偏移;背景颜色;层叠模式数字大的在上面显示;边框;盒子阴影*/
.inner-box{
width : 100% ;
height : 100% ;
background : url (../img/fe.png);
display : none ;
}
/*子菜单背景:宽;高;背景图片;全部隐藏*/
.sub-inner-box{
width : 652px ;
margin-left : 40px ;
overflow : hidden ;
}
/*子菜单内容;宽;外左边距;溢出的内容隐藏*/
.title{
font-size : 16px ;
color : #f01414 ;
line-height : 16px ;
font-weight : bold ;
margin : 28px 0 30px 0 ;
}
/*子菜单内容的标题:字体大小;颜色;行高;粗体;外边距*/
.sub-row{
margin-bottom : 25px ;
}
/*子菜单内容:外下边距让他们之间有距离*/
. bold {
font-weight : bold ;
}
/*子标题:字体加粗*/
.ml 10 {
margin-left : 10px ;
}
/*内容和斜杠之间的左边距离*/
.mr 10 {
margin-right : 10px ;
}
/*内容、子标题和斜杠之间的右边距离*/
. hide {
display : none ;
}
/*隐藏子菜单*/
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js
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// 声明全局变量
window.onload= function (){
var index = 0, //当前显示图片的索引,默认值为0
timer = null , //定时器
cease = byId( "cease" ), //鼠标悬停停止自动轮播的区域
prev = byId( "prev" ), //上一张
next = byId( "next" ), //下一张
banner = byId( "banner" ), //焦点图的爷爷
pics = banner.getElementsByTagName( 'div' ), //焦点图
dots = byId( "dots" ).getElementsByTagName( 'span' ), //圆点
menuContent = byId( "menu-content" ), //主菜单
menuItems = menuContent.getElementsByClassName( "menu-item" ), //主菜单的标题
subMenu = byId( "sub-menu" ), //子菜单
innerBox = subMenu.getElementsByClassName( "inner-box" ), //子菜单的标题
mlen = menuItems.length,
size = pics.length,
llen = innerBox.length;
// console.log(size);
console.log(lis_1[0]);
lis_1[0].onclick = function (){
department.className = 'hide'
hospital.className = 'hospital'
lis_1[0].className = 'li_1'
}
lis_1[1].onclick = function (){
department.className = ''
hospital.className = 'hospital hide'
lis_1[1].className = 'li_1'
}
//封装getElementById()三元运算符
function byId(id){
return typeof (id) === "string" ? document.getElementById(id):id;
}
/*封装通用事件绑定方法;
element绑定事件的DOM元素
事件名
事件处理程序
*/
function addHandler(element,type,handler){
//针对非IE浏览器
if (element,addEventListener) {
element.addEventListener(type,handler, true );
} //IE浏览器支持DOM2级
else if (element,attachEvent) {
element.attachEvent( 'on' + type,handler);
} //IE浏览器不支持DOM2级,使用DOM0级
else {
element[ 'on' + type] = handler;
//变量不可以.type,事件可以.;
}
}
//封装函数,切换图片
function changImg(){
//遍历所有图片,将图片隐藏,将圆点上的类清除
for ( var i=0;i<size;i++){
pics[i].style.display = 'none' ;
dots[i].className = "" ;
}
//显示当前图片
pics[index].style.display = 'block' ;
//当前圆点高亮显示
dots[index].className = "active" ;
}
// 点击下一张按钮显示下一张图片
addHandler(next, "click" , function (){
index++;
if (index>=size) index = 0;
changImg();
});
// 点击上一张按钮显示上一张图片
addHandler(prev, "click" , function (){
index--;
if (index<0) index = size-1;
changImg();
});
//点击圆点索引切换图片
for ( var j=0;j<size;j++){
dots[j].setAttribute( 'tid' ,j);
addHandler(dots[j], 'click' , function (){
//自定义属性不可以直接点,需用getAttribute
index = this .getAttribute( 'tid' );
changImg();
})
}
//定时器,开启自动轮播
function startAutoPlay(){
timer = setInterval( function (){
index++;
if (index>=size) index = 0;
changImg();
},3000)
}
//清除定时器,停止自动轮播
function ceaseAutoPlay(){
if (timer){
clearInterval(timer);
}
}
//封装函数,取消所有主菜单背景
function bgNone(){
for ( var n=0;n<mlen;n++){
menuItems[n].style.background = 'none' ;
}
}
//封装函数,子菜单和主菜单背景显示
function menuItemsBg(){
//显示子菜单所在的背景
subMenu.className = "sub-menu" ;
//获取当前主菜单的索引
index = this .getAttribute( 'data-index' );
//遍历所有的子菜单innerbox,将它们隐藏
for ( var l=0;l<llen;l++){
//隐藏所有的子菜单
innerBox[l].style.display = "none" ;
//所有主菜单取消背景
menuItems[l].style.background = 'none' ;
}
//找到当前子菜单,让其显示出来
innerBox[index].style.display = "block" ;
//当前主菜单显示背景
menuItems[index].style.background = 'rgba(0,0,0,.1)' ;
}
//鼠标滑过主菜单和子菜单
for ( var k=0;k<mlen;k++){
//给所有主菜单定义属性,表明它的索引
menuItems[k].setAttribute( 'data-index' ,k);
//给所有子菜单定义属性,表明它的索引
innerBox[k].setAttribute( 'data-index' ,k);
addHandler(menuItems[k], "mouseover" ,menuItemsBg)
addHandler(innerBox[k], "mouseover" ,menuItemsBg)
}
//鼠标滑入子菜单,显示子菜单
addHandler(subMenu, "mouseover" , function (){
subMenu.className = "sub-menu" ;
})
//鼠标离开主菜单,隐藏子菜单
addHandler(menuContent, "mouseout" , function (){
subMenu.className = "sub-menu hide" ;
bgNone();
})
//鼠标离开子菜单,隐藏子菜单
addHandler(subMenu, "mouseout" , function (){
subMenu.className = "sub-menu hide" ;
bgNone();
})
//鼠标滑入cease,停止轮播
addHandler(cease, "mouseover" ,ceaseAutoPlay);
//鼠标离开cease,继续轮播
addHandler(cease, "mouseout" ,startAutoPlay);
//自动开启轮播
startAutoPlay();
}
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以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/a815886696/article/details/108714787