经典html轮播图切换代码

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>轮播图点击切换</title>
  <style>
    * {
      box-sizing: border-box;
    }

    .slider {
      width: 560px;
      height: 400px;
      overflow: hidden;
    }

    .slider-wrapper {
      width: 100%;
      height: 320px;
    }

    .slider-wrapper img {
      width: 100%;
      height: 100%;
      display: block;
    }

    .slider-footer {
      height: 80px;
      background-color: rgb(100, 67, 68);
      padding: 12px 12px 0 12px;
      position: relative;
    }

    .slider-footer .toggle {
      position: absolute;
      right: 0;
      top: 12px;
      display: flex;
    }

    .slider-footer .toggle button {
      margin-right: 12px;
      width: 28px;
      height: 28px;
      appearance: none;
      border: none;
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      border-radius: 4px;
      cursor: pointer;
    }

    .slider-footer .toggle button:hover {
      background: rgba(255, 255, 255, 0.2);
    }

    .slider-footer p {
      margin: 0;
      color: #fff;
      font-size: 18px;
      margin-bottom: 10px;
    }

    .slider-indicator {
      margin: 0;
      padding: 0;
      list-style: none;
      display: flex;
      align-items: center;
    }

    .slider-indicator li {
      width: 8px;
      height: 8px;
      margin: 4px;
      border-radius: 50%;
      background: #fff;
      opacity: 0.4;
      cursor: pointer;
    }

    .slider-indicator li.active {
      width: 12px;
      height: 12px;
      opacity: 1;
    }
  </style>
</head>

<body>
  <div class="slider">
    <div class="slider-wrapper">
      <a href="#"><img src="./images/slider01.jpg" alt="" /></a>
    </div>
    <div class="slider-footer">
      <p>对人类来说会不会太超前了？</p>
      <ul class="slider-indicator">
        <li class="active"></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
      </ul>
      <div class="toggle">
        <button class="prev">&lt;</button>
        <button class="next">&gt;</button>
      </div>
    </div>
  </div>
  <script>
    // 1. 初始数据
    const sliderData = [{
        url: './images/slider01.jpg',
        title: '对人类来说会不会太超前了？',
        color: 'rgb(100, 67, 68)',
        link: './index1.html'
      },
      {
        url: './images/slider02.jpg',
        title: '开启剑与雪的黑暗传说！',
        color: 'rgb(43, 35, 26)',
        link: './index2.html'
      },
      {
        url: './images/slider03.jpg',
        title: '真正的jo厨出现了！',
        color: 'rgb(36, 31, 33)',
        link: './index3.html'
      },
      {
        url: './images/slider04.jpg',
        title: '李玉刚：让世界通过B站看到东方大国文化',
        color: 'rgb(139, 98, 66)',
        link: './index4.html'
      },
      {
        url: './images/slider05.jpg',
        title: '快来分享你的寒假日常吧~',
        color: 'rgb(67, 90, 92)',
        link: './index5.html'
      },
      {
        url: './images/slider06.jpg',
        title: '哔哩哔哩小年YEAH',
        color: 'rgb(166, 131, 143)',
        link: './index6.html'
      },
      {
        url: './images/slider07.jpg',
        title: '一站式解决你的电脑配置问题！！！',
        color: 'rgb(53, 29, 25)',
        link: './index7.html'
      },
      {
        url: './images/slider08.jpg',
        title: '谁不想和小猫咪贴贴呢！',
        color: 'rgb(99, 72, 114)',
        link: './index8.html'
      },
    ]



    let intervalTime = 500

    const next = document.querySelector('.next')

    const img = document.querySelector('.slider-wrapper img')

    const p = document.querySelector('.slider-footer p')
    const a = document.querySelector('.slider-wrapper a')

    let i = 0

    next.addEventListener("click", function () {

      i++

      if (i >= sliderData.length) {
        i = 0
      }

      load()

    })
    const prev = document.querySelector('.prev')
    prev.addEventListener("click", function () {

      i--

      if (i < 0) {
        i = sliderData.length - 1
      }

      load()

    })


    let timerId = setInterval(function () {
      next.click()
    }, intervalTime)

    document.querySelector('.slider').addEventListener("mouseenter", function () {
      clearInterval(timerId)
    })

    document.querySelector('.slider').addEventListener("mouseleave", function () {
      clearInterval(timerId)
      timerId = setInterval(function () {
        next.click()
      }, intervalTime)
    })

    function load() {
      img.src = sliderData[i].url
      p.innerHTML = sliderData[i].title
      a.href = sliderData[i].link

      document.querySelector('.slider-indicator .active').classList.remove('active')
      document.querySelector(`.slider-indicator li:nth-child(${i+1})`).classList.add('active')
    }
  </script>
</body>

</html>