JS实现头条新闻的经典轮播图效果示例
程序员文章站
2023-11-12 18:58:40
本文实例讲述了js实现头条新闻的经典轮播图效果。分享给大家供大家参考，具体如下：
本文实例讲述了js实现头条新闻的经典轮播图效果。分享给大家供大家参考，具体如下：
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>document</title>
<style>
*{
margin:0;
padding:0;
list-style: none;
}
.box{
width: 665px;
height: 362px;
border: solid;
margin: 100px auto;
position:relative ;
}
.left{
width: 50px;
height: 50px;
border: solid white;
border-radius: 50%;
position: absolute;
line-height: 50px;
text-align: center;
font-size: 50px;
left:0px;
top:180px;
cursor: pointer;
color: white;
}
.right {
width: 50px;
height: 50px;
border: solid white;
border-radius: 50%;
position: absolute;
line-height: 50px;
text-align: center;
font-size: 50px;
right: 0px;
top: 180px;
cursor: pointer;
color: white;
}
ul{
width: 400px;
height: 50px;
margin:307px 188px;
position: absolute;
left:30px;
top:24px;
}
li{
width: 30px;
height: 30px;
border: solid 1px white;
border-radius: 50%;
float: left;
cursor: pointer;
line-height: 30px;
text-align: center;
color: white;
}
img{
display: none;
width: 665px;
height: 362px;
}
.act{display: block;
}
.active{
background: black;
}
</style>
</head>
<body>
<div class="box" id="box">
<img src="img/1.jpg" alt="" class="act">
<img src="img/2.jpg" alt="">
<img src="img/3.jpg" alt="">
<img src="img/4.jpg" alt="">
<img src="img/5.jpg" alt="">
<img src="img/6.jpg" alt="">
<img src="img/7.jpg" alt="">
<img src="img/8.jpg" alt="">
<div class="left" id="left"> < </div>
<div class="right" id="right"> > </div>
<ul>
<li class="active">1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
</ul>
</div>
<script>
window.onload=function () {
var arrli=document.getelementsbytagname("li");
var arrimg=document.getelementsbytagname("img");
var oleft=document.getelementbyid("left");
var oright=document.getelementbyid("right");
var obox=document.getelementbyid("box");
var num=0;
f=setinterval(abc,1000);
obox.onmouseover=function () {
clearinterval(f)
}
obox.onmouseout=function () {
f=setinterval(abc,1000);
}
for(x=0;x<arrli.length;x++) {
arrli[x].index=x;
arrli[x].onmouseover=function () {
for(j=0;j<arrli.length;j++){
arrli[j].classname="";
arrimg[j].classname="";
}
this.classname="active";
arrimg[this.index].classname="act";
}
}
oleft.onclick=function () {
num=num-1;
if(num<0){
num=arrimg.length-1
}
for(j=0;j<arrimg.length;j++){
arrimg[j].classname="";
arrli[j].classname="";
}arrimg[num].classname="act";
arrli[num].classname="active";
}
oright.onclick=abc
function abc() {
num=num+1;
if(num>arrimg.length-1){
num=0
}
for(j=0;j<arrimg.length;j++){
arrimg[j].classname="";
arrli[j].classname="";
}arrimg[num].classname="act";
arrli[num].classname="active";
}
}
</script>
</body>
</html>
本机测试运行效果如下：
更多关于javascript相关内容感兴趣的读者可查看本站专题：《javascript图片操作技巧大全》、《javascript切换特效与技巧总结》、《javascript运动效果与技巧汇总》、《javascript动画特效与技巧汇总》、《javascript错误与调试技巧总结》、《javascript数据结构与算法技巧总结》、《javascript遍历算法与技巧总结》及《javascript数学运算用法总结》
希望本文所述对大家javascript程序设计有所帮助。
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