全屏banner及全屏轮播
一、全屏banner
1、设置网页图片全屏banner
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
* {
margin: 0;
padding: 0;
}
.pic {
width: 100%;
height: 600px;
background: url("...") no-repeat center;
}
</style>
</head>
<body>
<div class="banner">
<div class="pic"></div>
</div>
</body>
</html>
二、全屏轮播
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>全屏轮播模板</title>
<style>
html,body,head,span,button,div,title {
margin: 0;
padding: 0;
}
.cont {
position: relative;
height: 600px;
}
.list{
position: relative;
}
.list div {
width: 100%;
height: 600px;
position: absolute;
opacity: 0;
transition: 1s; /*设置切换时间*/
}
.pic1 {
background: url(img/lbt01.jpg) no-repeat center red;
}
.pic2 {
background: url(img/lbt02.jpg) no-repeat center blue;
}
.pic3 {
background: url(img/lbt03.jpg) no-repeat center yellow;
}
.pic4 {
background: url(img/lbt04.jpg) no-repeat center green;
}
.pic5 {
background: url(img/lbt05.jpg) no-repeat center pink;
}
.btns {
position: absolute;
z-index: 6;
left: 50%;
bottom: 80px;
margin-left: -170px;
}
.btns span {
float: left;
width: 60px;
height: 5px;
margin-right: 10px;
background-color: rgba(255,255,255,0.3);
border-radius: 5px;
}
.buttons {
width: 1180px;
height: 600px;
margin: 0 auto;
position: relative;
}
.btn { /*左右切换按钮样式*/
position: absolute;
top: 50%;
margin-top: -26px;
width: 32px;
height: 52px;
font-size: 30px;
border-radius: 5px;
z-index: 6;
opacity: 0.5;
}
.btn-prev {
left: 0;
}
.btn-next {
right: 0;
}
.bgc {
background-color: white !important;
}
</style>
</head>
<body>
<div class="cont">
<div class="list">
<div class="pic1" data-index=0 style="opacity: 1; z-index: 2;"></div>
<div class="pic2" data-index=1></div>
<div class="pic3" data-index=2></div>
<div class="pic4" data-index=3></div>
<div class="pic5" data-index=4></div>
</div>
<div class="btns">
<span class="bgc"></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div class="buttons">
<button class="btn btn-prev"> < </button>
<button class="btn btn-next"> > </button>
</div>
</div>
<script>
var btn = document.getElementsByClassName("btn");
var imgs = document.querySelectorAll(".list div");
var btns = document.querySelectorAll(".btns span");
var cont = document.getElementsByClassName("cont")[0];
var indexes, timer = null;
for(let i=0; i<btns.length; i++){
btns[i].onmouseover = function(){ // 给所有下面的白色线条添加一个鼠标经过事件
animate(i);
}
}
btn[0].onclick = function(){ // 上一张按钮
indexes = currentPage();
if(indexes == 0) indexes=5;
indexes--;
animate(indexes);
}
btn[1].onclick = next;
function next(){ // 下一张按钮
indexes = currentPage();
if(indexes == 4) indexes = -1;
indexes++;
animate(indexes);
}
function animate(i){ // 动画函数
for(let j = 0; j<imgs.length; j++){
imgs[j].style.opacity = 0;
imgs[j].style.zIndex = 1;
btns[j].classList.remove("bgc");
}
imgs[i].style.opacity = 1;
imgs[i].style.zIndex = 2;
btns[i].classList.add("bgc");
}
function currentPage() { // 返回当前页面
for(var i = 0; i<imgs.length; i++){
if(imgs[i].style.zIndex == 2){
return imgs[i].dataset.index;
}
}
}
timer = setInterval(next,3000); // 设置自动播放
cont.onmousemove = function(){ // 鼠标移入时停止自动播放
clearInterval(timer);
}
cont.onmouseout = function(){ // 鼠标移出时又开始播放
timer = setInterval(next,3000);
}
</script>
</body>
</html>
