Question

我正在尝试制作幻灯片。普通幻灯片每张幻灯片只有一张图片，但就我而言，每张幻灯片都有不同数量的图片。

以下是 2 张幻灯片的示例：

第一张幻灯片

First Slide

第二张幻灯片

Second Slide

我用一张图片工作得很好，但每页不能放更多。

let currentSlide = 0;
const slides = document.querySelectorAll(".slide")
const dots = document.querySelectorAll('.dot')

const init = (n) => {
  slides.forEach((slide, index) => {
    slide.style.display = "none"
    dots.forEach((dot, index) => {
      dot.classList.remove("active")
    })
  })
  slides[n].style.display = "block"
  dots[n].classList.add("active")
}
document.addEventListener("DOMContentLoaded", init(currentSlide))
const next = () => {
  currentSlide >= slides.length - 1 ? currentSlide = 0 : currentSlide++
    init(currentSlide)
}

const prev = () => {
  currentSlide <= 0 ? currentSlide = slides.length - 1 : currentSlide--
    init(currentSlide)
}

document.querySelector(".next").addEventListener('click', next)

document.querySelector(".prev").addEventListener('click', prev)


setInterval(() => {
  next()
}, 5000);

dots.forEach((dot, i) => {
  dot.addEventListener("click", () => {
    console.log(currentSlide)
    init(i)
    currentSlide = i
  })
})

.slide-container .prev,
.slide-container .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -22px;
  padding: 16px;
  color: white;
  font-weight: bold;
  font-size: 20px;
  transition: all 0.6s ease;
  border-radius: 0 3px 3px 0;
  user-select: none;
}

.slide-container .prev:hover,
.slide-container .next:hover {
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
}

.slide-container .prev {
  left: 2px;
}

.slide-container .next {
  right: 2px;
}

.dots-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
}

.dots-container .dot {
  cursor: pointer;
  margin: 5px;
  width: 20px;
  height: 20px;
  color: #333;
  border-radius: 50%;
  background-color: #dfd6ce;
}

.dots-container .dot.active {
  border: 2px solid green;
}

* {
  padding: 0;
  border: 0;
  box-sizing: border-box;
}

body {
  height: 100%;
  /*   background-image: linear-gradient(to top, #accbee 0%, #e7f0fd 100%); */
}

body h1 {
  text-align: center;
}

.slide-container {
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 1000px;
  margin: auto;
  position: relative;
}

.slide-container .slide {
  display: none;
  width: 100%;
}

.slide-container .slide.fade {
  animation: fade 0.5s cubic-bezier(0.55, 0.085, 0.68, 0.53) both;
}

.slide-container .slide img {
  width: 100%;
}

<html>

<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Image Slider</title>
</head>

<body>
  <h1>Image Slider</h1>
  <div class="slide-container">
    <div class="slide fade">
      <img src='https://images.unsplash.com/photo-1590595978583-3967cf17d2ea?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt=''>
    </div>
    <div class="slide fade">
      <img src='https://images.unsplash.com/photo-1588807308097-fb6e5047df8c?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt=''>
    </div>
    <div class="slide fade">
      <img src='https://images.unsplash.com/photo-1589808710416-24cf7ac026f2?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt=''>
    </div>
    <div class="slide fade">
      <img src='https://images.unsplash.com/photo-1588796388882-a4d533c47e5e?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt=''>
    </div>

    <a href="#" class="prev" title="Previous">&#10094</a>
    <a href="#" class="next" title="Next">&#10095</a>
  </div>
  <div class="dots-container">
    <span class="dot"></span>
    <span class="dot"></span>
    <span class="dot"></span>
    <span class="dot"></span>
  </div>
</body>

</html>

如果有人能帮上忙，那会很有帮助。

谢谢

Answer 1

在每张幻灯片中获取多个图像的一种方法是在幻灯片中放置多个 img 元素并相应地调整它们的大小。

这个片段只是基本的 - 将两个 imgs 放入第一张幻灯片，并给它们每个 45% 的宽度（这样它们就有空间彼此相邻）。

根据您需要的通用程度，您必须对每张幻灯片进行某种计算，以计算其中每个图像的相关宽度，可能只是幻灯片宽度的 100/n%，但如果您的图片具有不同的纵横比。

let currentSlide = 0;
const slides = document.querySelectorAll(".slide")
const dots = document.querySelectorAll('.dot')

const init = (n) => {
  slides.forEach((slide, index) => {
    slide.style.display = "none"
    dots.forEach((dot, index) => {
      dot.classList.remove("active")
    })
  })
  slides[n].style.display = "block"
  dots[n].classList.add("active")
}
document.addEventListener("DOMContentLoaded", init(currentSlide))
const next = () => {
  currentSlide >= slides.length - 1 ? currentSlide = 0 : currentSlide++
    init(currentSlide)
}

const prev = () => {
  currentSlide <= 0 ? currentSlide = slides.length - 1 : currentSlide--
    init(currentSlide)
}

document.querySelector(".next").addEventListener('click', next)

document.querySelector(".prev").addEventListener('click', prev)


setInterval(() => {
  next()
}, 5000);

dots.forEach((dot, i) => {
  dot.addEventListener("click", () => {
    console.log(currentSlide)
    init(i)
    currentSlide = i
  })
})

.slide-container .prev,
.slide-container .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -22px;
  padding: 16px;
  color: white;
  font-weight: bold;
  font-size: 20px;
  transition: all 0.6s ease;
  border-radius: 0 3px 3px 0;
  user-select: none;
}

.slide-container .prev:hover,
.slide-container .next:hover {
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
}

.slide-container .prev {
  left: 2px;
}

.slide-container .next {
  right: 2px;
}

.dots-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
}

.dots-container .dot {
  cursor: pointer;
  margin: 5px;
  width: 20px;
  height: 20px;
  color: #333;
  border-radius: 50%;
  background-color: #dfd6ce;
}

.dots-container .dot.active {
  border: 2px solid green;
}

* {
  padding: 0;
  border: 0;
  box-sizing: border-box;
}

body {
  height: 100%;
  /*   background-image: linear-gradient(to top, #accbee 0%, #e7f0fd 100%); */
}

body h1 {
  text-align: center;
}

.slide-container {
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 1000px;
  margin: auto;
  position: relative;
}

.slide-container .slide {
  display: none;
  width: 100%;
}

.slide-container .slide.fade {
  animation: fade 0.5s cubic-bezier(0.55, 0.085, 0.68, 0.53) both;
}

.slide-container .slide img {
  width: 100%;
}

<html>

<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Image Slider</title>
</head>

<body>
  <h1>Image Slider</h1>
  <div class="slide-container">
    <div class="slide fade">
      <img src='https://images.unsplash.com/photo-1590595978583-3967cf17d2ea?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt='' style="width: 45%; height: auto;">
      <img src='https://images.unsplash.com/photo-1588807308097-fb6e5047df8c?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt='' style="width: 45%; height: auto;">
    </div>
    <div class="slide fade">
      <img src='https://images.unsplash.com/photo-1588807308097-fb6e5047df8c?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt=''>
    </div>
    <div class="slide fade">
      <img src='https://images.unsplash.com/photo-1589808710416-24cf7ac026f2?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt=''>
    </div>
    <div class="slide fade">
      <img src='https://images.unsplash.com/photo-1588796388882-a4d533c47e5e?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ' alt=''>
    </div>

    <a href="#" class="prev" title="Previous">&#10094</a>
    <a href="#" class="next" title="Next">&#10095</a>
  </div>
  <div class="dots-container">
    <span class="dot"></span>
    <span class="dot"></span>
    <span class="dot"></span>
    <span class="dot"></span>
  </div>
</body>

</html>

每张幻灯片具有不同数量的图像的幻灯片

1 个答案: