183 lines
4.2 KiB
HTML
183 lines
4.2 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 http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>轮播图</title>
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<style>
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* {
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margin: 0;
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padding: 0;
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list-style: none;
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}
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.swiper {
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width: 630px;
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height: 315px;
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margin: 100px auto;
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overflow: hidden;
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position: relative;
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}
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.swiper .swiper_wrap {
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display: flex;
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position: relative;
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transition: all 1s;
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}
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.swiper .swiper_wrap li {}
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.swiper .swiper_wrap li img {
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width: 630px;
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height: 315px;
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}
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.swiper .button {
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width: 100%;
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position: absolute;
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top: 50%;
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display: flex;
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justify-content: space-between;
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transform: translateY(-50%);
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}
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.swiper .button div {
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color: #fff;
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font-size: 20px;
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background: #000;
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display: flex;
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align-items: center;
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justify-content: center;
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width: 50px;
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height: 50px;
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cursor: pointer;
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}
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.swiper .button .left {}
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.swiper .button .right {}
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.swiper .dot {
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position: absolute;
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left: 50%;
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transform: translateX(-50%);
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bottom: 20px;
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display: flex;
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}
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.swiper .dot li {
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width: 13px;
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height: 13px;
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background: #fff;
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border-radius: 100%;
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margin-right: 10px;
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cursor: pointer;
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}
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.swiper .dot li:last-child {
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margin-right: 0px;
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}
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.swiper .dot .active {
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background: red;
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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="swiper">
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<ul class="swiper_wrap" style="left: 0px;">
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<li>
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<img src="https://img.alicdn.com/imgextra/i4/6000000003174/O1CN01cpv0cZ1ZJjvVWrUuo_!!6000000003174-2-octopus.png"
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alt="">
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</li>
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<li>
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<img src="https://img.alicdn.com/imgextra/i2/6000000003386/O1CN01ySmLuo1asptKSfbHC_!!6000000003386-0-octopus.jpg"
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alt="">
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</li>
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<li>
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<img src="https://img.alicdn.com/imgextra/i3/6000000000084/O1CN012wKWpe1CUW5EEs61K_!!6000000000084-0-octopus.jpg"
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alt="">
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</li>
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</ul>
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<div class="button">
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<div class="left">< </div>
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<div class="right"> > </div>
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</div>
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<ul class="dot">
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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>
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</body>
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<script>
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// TODO 使用 下标完成对 sport 的改造，
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// 实现 调用 changeDotActive 只需要传入 下标即可
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var timeId = null;
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$(".right").onclick = () => {
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sport(-630)
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}
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$(".left").onclick = () => {
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sport(630)
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}
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_(".dot li").forEach((v, i) => {
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v.onclick = () => {
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changeDotActive(i)
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}
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})
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$(".swiper").onmouseover = () => {
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clearInterval(timeId)
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}
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$(".swiper").onmouseout = () => {
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auto()
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}
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function sport(offset) {
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var oldLeft = parseInt($(".swiper_wrap").style.left);
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console.log("a",$(".swiper_wrap").style.left);
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var newLeft = oldLeft + offset;
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if (newLeft <= 0 && newLeft >= -1260) {
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changeDotActive(newLeft / -630)
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// changeDotActive(i)
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}
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}
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function changeDotActive(i) {
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_(".dot li").forEach(val => {
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val.classList.remove("active");
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})
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_(".dot li")[i].classList.add("active")
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$(".swiper_wrap").style.left = `${i * -630}px`
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}
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function auto() {
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timeId = setInterval(() => {
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$(".right").onclick()
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}, 2000)
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}
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auto()
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function $(className) {
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return document.querySelector(className)
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}
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function _(className) {
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return document.querySelectorAll(className)
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}
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</script>
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</html> |