185 lines
4.1 KiB
HTML
185 lines
4.1 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title> js 轮播图 </title>
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<style>
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body,ul,li {
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margin: 0;
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padding: 0;
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}
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li {
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list-style: none;
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}
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.main {
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width: 520px;
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height: 280px;
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margin: 0 auto;
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border: 1px solid #000000;
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overflow: hidden;
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position: relative;
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}
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.item {
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width: 1560px;
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overflow: hidden;
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width: 1560px;
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overflow: hidden;
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position: absolute;
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transition: all 0.3s;
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}
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.item li {
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float: left;
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}
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.action {
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width: 100%;
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position: absolute;
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top: 50%;
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margin-top: -25px;
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padding: 0 10px;
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box-sizing: border-box;
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}
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.action div{
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width: 50px;
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height: 50px;
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text-align: center;
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line-height: 43px;
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color: #ffffffb0;
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font-size: 33px;
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background: #00000070;
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border-radius: 100%;
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display: inline-block;
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}
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.action-right {
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float: right;
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}
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.yuandian {
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position: absolute;
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left: 50%;
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margin-left: -30px;
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height: 40px;
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bottom: 0;
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z-index: 9;
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}
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.yuandian li {
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float: left;
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width: 10px;
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height: 10px;
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border-radius: 100%;
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margin-right: 10px;
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background: #fff;
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}
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.active {
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background: red !important;
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}
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</style>
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</head>
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<body>
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<div class="main">
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<ul class="item" style="left:0px">
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<li>
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<img src="https://img.alicdn.com/simba/img/TB1Z2nmeW5s3KVjSZFNSuwD3FXa.jpg" alt="">
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</li>
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<li>
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<img src="https://img.alicdn.com/simba/img/TB1IvbNaEY1gK0jSZFCSuwwqXXa.jpg" alt="">
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</li>
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<li>
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<img src="https://img.alicdn.com/tfs/TB1YKULarH1gK0jSZFwXXc7aXXa-520-280.jpg_q90_.webp" alt="">
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</li>
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</ul>
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<ul class="yuandian">
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<li class="active"></li>
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<li></li>
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<li></li>
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</ul>
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<div class="action">
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<div class="action-left"> < </div>
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<div class="action-right"> > </div>
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</div>
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</div>
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<script>
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var timer, currenIndex = 0;
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document.querySelector(".action-right").onclick = function () {
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var style = parseInt(document.querySelector(".item").style.left)
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var newLeft = (style - 520) + 'px';
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if(currenIndex>=2) {
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currenIndex = -1
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}
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currenIndex++
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liandongyuand()
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if(style <= -1040) {
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document.querySelector(".item").style.left = '0px'
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} else {
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document.querySelector(".item").style.left = newLeft
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}
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}
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document.querySelector(".action-left").onclick = function () {
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var style = parseInt(document.querySelector(".item").style.left)
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var newLeft = (style + 520) + 'px';
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if(currenIndex<=0) {
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currenIndex = 3
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}
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currenIndex--
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liandongyuand()
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if(style>=0) {
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document.querySelector(".item").style.left = '-1040px'
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} else {
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document.querySelector(".item").style.left = newLeft
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}
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}
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document.querySelector(".main").onmousemove = function () {
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clearInterval(timer)
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}
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document.querySelector(".main").onmouseout = function () {
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autoPlay()
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}
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function liandongyuand () {
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var li = document.querySelectorAll(".yuandian li");
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li.forEach(function(val) {
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val.className = ""
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})
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li[currenIndex].className = "active"
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}
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function ydClick () {
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var li = document.querySelectorAll(".yuandian li");
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li.forEach(function(val,index) {
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val.onclick = function () {
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li.forEach(function(val) {
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val.className = ""
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})
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val.className = "active"
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offsetLeft(index)
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}
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})
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}
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function offsetLeft(index) {
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document.querySelector(".item").style.left = (index * -520 ) + 'px'
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}
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function autoPlay () {
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timer = setInterval(function() {
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document.querySelector(".action-right").onclick()
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}, 1000)
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}
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ydClick()
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autoPlay()
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</script>
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</body>
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</html> |