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es6的class类封装轮播图
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了es6的class类封装轮播图，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含4815字，纯文字阅读大概需要7分钟。
内容图文
话不多说，直接上代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script></script>
<style>
* {
margin: 0;
padding: 0;
}
.box {
width: 400px;
height: 350px;
border: 1px solid red;
overflow: hidden;
margin: auto;
margin-top: 50px;
position: relative;
top: 0;
left: 0;
}
.outer {
list-style: none;
position: absolute;
top: 0;
left: 0;
transition: .3s all linear;
}
.img {
width: 400px;
height: 350px;
float: left;
}
.left {
position: absolute;
top: 200px;
right: 0;
display: none;
}
.right {
position: absolute;
top: 200px;
left: 0;
display: none;
}
.right > :first-child, .left > :first-child {
width: 35px;
height: 35px;
}
.oOl {
list-style: none;
position: absolute;
bottom: 30px;
}
.oLi {
width: 25px;
height: 25px;
background: white;
border-radius: 50%;
float: left;
}
.color {
background: black;
}
</style>
</head>
<body>
<div class="box">
<ul class="outer">
<li class="img" style="background: rebeccapurple">1</li>
<li class="img" style="background: orangered">2</li>
<li class="img" style="background: yellow">3</li>
<li class="img" style="background: green">4</li>
<li class="img" style="background: greenyellow">5</li>
</ul>
<a href="javascript: void (0);" class="left"><img src="./images/1.png" ></a>
<a href="javascript: void (0);" class="right"><img src="./images/2.png" ></a>
</div>
</body>
<script>
class Chart {
constructor(name, json) {
this.box = document.querySelector(name);
this.json = json;
//获取轮播图的属性this.outer = document.querySelector(name + ‘ .outer‘); //注意加空格this.left = document.querySelector(name + ‘ .left‘);
this.right = document.querySelector(name + ‘ .right‘);
//初始化this.timer = null; //自动播放this.iNow = 0;
this.init();
};
init() {
const that = this; //保存一个this
console.log(this.json.a);
if (this.json.a){
console.log(1);
}
//克隆第一张放到最后
let uLi = that.outer.children[0].cloneNode(true);
that.outer.appendChild(uLi);
that.outer.style.width = that.outer.children.length * that.outer.children[0].offsetWidth + ‘px‘;
//点击左右滑动if (that.json.slide) {
that.left.style.display = ‘block‘;
that.right.style.display = ‘block‘;
this.left.onclick = () => {
that.leftGo()
};
this.right.onclick = () => {
that.rightGo()
};
}
//自动播放if (that.json.move) {
that.moveGo();
//鼠标移入移出if (that.json.loop) {
that.box.onmousemove = () => {
clearInterval(that.timer)
};
that.box.onmouseout = () => {
that.moveGo()
}
}
}
//展示小圆点if (that.json.nav) {
let oOL = document.createElement(‘ol‘);
oOL.className = ‘oOl‘;
oOL.style.left = that.json.distanceLeft + ‘px‘;
that.box.appendChild(oOL);
for (let i = 0; i < that.outer.children.length - 1; i++) {
let oLi = document.createElement(‘li‘);
oLi.className = ‘oLi‘;
oLi.style.marginLeft = that.json.distance + ‘px‘;
oOL.appendChild(oLi);
}
oOL.style.width = ((that.outer.children.length - 1) * document.querySelector(‘.oLi‘).offsetWidth) + (that.json.distance * that.outer.children.length) + ‘px‘;
that.alike();
}
};
leftGo() {
this.iNow++;
if (this.iNow >= this.outer.children.length) {
this.iNow = 1;
this.outer.style.transition = ‘0s all linear‘;
this.outer.style.left = 0;
}
this.outer.style.left = -this.iNow * this.outer.children[0].offsetWidth + ‘px‘;
this.outer.style.transition = ‘.3s all linear‘;
this.alike();
};
rightGo() {
this.iNow--;
if (this.iNow <= -1) {
this.iNow = this.outer.children.length - 1;
this.outer.style.transition = ‘0s all linear‘;
this.outer.style.left = -(this.outer.children.length - 1) * this.outer.children[0].offsetWidth + ‘px‘;
this.iNow = this.outer.children.length - 2;
}
this.outer.style.left = -this.iNow * this.outer.children[0].offsetWidth + ‘px‘;
this.outer.style.transition = ‘0.3s all linear‘;
};
moveGo() {
const that = this;
this.timer = setInterval(() => {
that.leftGo();
}, that.json.speed || 1500)
};
//圆点对应每张图片 alike() {
let li = document.querySelectorAll(‘.oLi‘);
for (let i = 0; i < li.length; i++) {
li[i].classList.remove(‘color‘);
if (i == this.iNow) {
li[i].classList.add(‘color‘);
} else {
li[i].classList.remove(‘color‘);
}
//特殊：最后一张的时候是第一个if (this.iNow == li.length) {
li[0].classList.add(‘color‘);
}
//小圆点点击事件if (this.json.event) {
li[i].onclick = () => {
for (let i = 0; i < li.length; i++) {
li[i].classList.remove(‘color‘);
}
li[i].classList.add(‘color‘);
this.outer.style.left = -i * this.outer.children[0].offsetWidth + ‘px‘;
}
}
}
}
}
new Chart(‘.box‘, {
move: true, //自动轮播
speed: 1500, //轮播速度
loop: true, //鼠标移入移出效果
slide: true, //点击左右滑动效果
nav: true, //展示小圆点
distanceLeft: 76, //小圆点距离左边的距离
distance: 20, //小圆点间距
event: true//小圆点事件 })
</script>
</html>
原文：https://www.cnblogs.com/zhanping/p/11574035.html
内容总结
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