<!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">
<style>
#swiper{
height: 200px;
width: 200px;
border: 1px solid #cccccc;
margin: 0 auto;
overflow: hidden;
position: relative;
}
#swiper div{
height: 200px;
width: 200px;
float: left;
text-align: center;
}
#swiper div:nth-child(1){
background: pink;
}
#swiper div:nth-child(2){
height: 200px;
width: 200px;
float: left;
text-align: center;
background: gray;
}
#swiper div:nth-child(3){
height: 200px;
width: 200px;
float: left;
text-align: center;
background: yellow;
}
#swiper div:nth-child(4){
height: 200px;
width: 200px;
float: left;
text-align: center;
background: pink;
}
#swiper div:nth-child(5){
height: 200px;
width: 200px;
float: left;
text-align: center;
background: gray;
}
#left{
position: absolute;
left: 0;
top: 50%;
transform: translate3d(0,-50%,0);
z-index: 999;
}
#right{
position: absolute;
right: 0;
top: 50%;
transform: translate3d(0,-50%,0);
z-index: 999;
}
#swiperson{
position: relative;
}
</style>
<title>Document</title>
</head>
<body>
<div id="swiper">
<button id="left">左</button>
<button id="right">右</button>
<div id="swiperson">
<div>3</div>
<div>1</div>
<div>2</div>
<div>3</div>
<div>1</div>
</div>
</div>
<script>
// 轮播图插件
// 样式布局
let allWidth = document.getElementById('swiperson').children.length * document.getElementById('swiper').clientWidth;
let oneWidth = document.getElementById('swiper').clientWidth;
document.getElementById('swiperson').style.width = allWidth + 'px';
document.getElementById('swiperson').style.transform = 'translateX(-'+ oneWidth +'px)';
// 点击逻辑
let index = 1;
let length = document.getElementById('swiperson').children.length;
let flg = true;
document.getElementById("swiperson").addEventListener("transitionend", function () {
flg = true;
if(index === length-1){
document.getElementById('swiperson').style.transition = 'none';
document.getElementById('swiperson').style.transform = 'translateX(-'+ oneWidth +'px)';
index = 1
}
if(index === 0){
document.getElementById('swiperson').style.transition = 'none';
document.getElementById('swiperson').style.transform = 'translateX(-'+ oneWidth * (length-2)+'px)';
index = length - 2
}
});
function right() {
if(flg === true){
flg = false;
index++;
document.getElementById('swiperson').style.transition = 'all 1s';
document.getElementById('swiperson').style.transform = 'translateX(-'+ oneWidth*index +'px)'
}
}
function left() {
if(flg === true){
flg = false;
index--;
document.getElementById('swiperson').style.transition = 'all 1s';
document.getElementById('swiperson').style.transform = 'translateX(-'+ oneWidth*index +'px)'
}
}
// 点击
document.getElementById('left').onclick = function () {
left()
};
document.getElementById('right').onclick = function () {
right();
};
// 自动轮播
var time = setInterval(function () {
right();
},2000)
//手动滑动逻辑
var a;
document.getElementById('swiper').ontouchstart = function (ev) {
clearInterval(time)
a = ev.changedTouches[0].pageX;
};
document.getElementById('swiper').ontouchmove = function (ev) {
let b = ev.changedTouches[0].pageX;
console.log(b)
if(b - a > 40){
console.log('右滑动')
left()
}
if(a - b > 40){
console.log('左滑动')
right();
}
}
//PC 端 滑动逻辑
var a;
document.getElementById('swiper').onmousedown = function (ev) {
clearInterval(time)
console.log(ev)
a = ev.pageX;
document.getElementById('swiper').onmousemove = function (ev) {
console.log('move');
let b = ev.pageX;
if(b - a > 0){
console.log('右滑动')
left()
}
if(a - b > 0){
console.log('左滑动')
right();
}
};
}
document.getElementById('swiper').onmouseup = function (ev) {
document.getElementById('swiper').onmousemove = null
}
</script>
</body>
</html>
