CSS:幻灯片之间的CSS过渡类似于示例

Question

我有一个简单的代码来改变幻灯片点击箭头或点。

改变幻灯片内容之间没有过渡

是否有任何关于如何在幻灯片之间添加过渡的选项，如在链接中?

链接

我已经尝试过淡入和淡出动画，但这不是我想要的。我想做一个动画类似的例子在链接。它可能会有一点滑动，这降低了不透明度和反转。

有什么办法可以让我喜欢这个吗?

var slideIndex = 1;
showSlides(slideIndex);
function plusSlides(n) {
  showSlides(slideIndex += n);
}
function currentSlide(n) {
  showSlides(slideIndex = n);
}
function showSlides(n) {
  var i;
  var slides = document.getElementsByClassName("mySlides");
  var dots = document.getElementsByClassName("dot");
  if (n > slides.length) {
    slideIndex = 1
  }
  if (n < 1) {
    slideIndex = slides.length
  }
  for (i = 0; i < slides.length; i++) {
    slides[i].style.display = "none";
  }
  for (i = 0; i < dots.length; i++) {
    dots[i].className = dots[i].className.replace(" active", "");
  }
  slides[slideIndex - 1].style.display = "block";
  dots[slideIndex - 1].className += " active";
}

* {
  box-sizing: border-box
}
body {
  font-family: Verdana, sans-serif;
  margin: 0
}

/* Slideshow container */
.slideshow-container {
  position: relative;
  background: #f1f1f1f1;
}

/* Slides */
.mySlides {
  display: none;
  padding: 80px;
  text-align: center;
}

/* Next & previous buttons */
.prev,
.next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -30px;
  padding: 16px;
  color: #888;
  font-weight: bold;
  font-size: 20px;
  border-radius: 0 3px 3px 0;
  user-select: none;
}

/* Position the "next button" to the right */
.next {
  position: absolute;
  right: 0;
  border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
}

/* The dot/bullet/indicator container */
.dot-container {
  text-align: center;
  padding: 20px;
  background: #ddd;
}

/* The dots/bullets/indicators */
.dot {
  cursor: pointer;
  height: 15px;
  width: 15px;
  margin: 0 2px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.6s ease;
}

/* Add a background color to the active dot/circle */
.active,
.dot:hover {
  background-color: #717171;
}

/* Add an italic font style to all quotes */
q {
  font-style: italic;
}

/* Add a blue color to the author */
.author {
  color: cornflowerblue;
}

<div class="slideshow-container">
  <div class="mySlides">
    <q>I love you the more in that I believe you had liked me for my own sake and for nothing else</q>
    <p class="author">- John Keats</p>
  </div>
  <div class="mySlides">
    <q>But man is not made for defeat. A man can be destroyed but not defeated.</q>
    <p class="author">- Ernest Hemingway</p>
  </div>
  <div class="mySlides">
    <q>I have not failed. I've just found 10,000 ways that won't work.</q>
    <p class="author">- Thomas A. Edison</p>
  </div>
  <a class="prev" onclick="plusSlides(-1)">❮</a>
  <a class="next" onclick="plusSlides(1)">❯</a>
</div>
<div class="dot-container">
  <span class="dot" onclick="currentSlide(1)"></span>
  <span class="dot" onclick="currentSlide(2)"></span>
  <span class="dot" onclick="currentSlide(3)"></span>
</div>

Answer 1

你使用的display不接受数字，所以它不能被CSS动画。你需要使用opacity或transform: translate()

下面是一个使用不透明度

的例子还可以考虑使用classList.add()和classList.remove()。他们更容易。

var slideIndex = 1;
showSlides(slideIndex);
function plusSlides(n) {
  showSlides(slideIndex += n);
}
function currentSlide(n) {
  showSlides(slideIndex = n);
}
function showSlides(n) {
  var i;
  var slides = document.getElementsByClassName("mySlides");
  var dots = document.getElementsByClassName("dot");
  if (n > slides.length) {
    slideIndex = 1
  }
  if (n < 1) {
    slideIndex = slides.length
  }
  for (i = 0; i < slides.length; i++) {
    slides[i].classList.remove("active");
  }
  for (i = 0; i < dots.length; i++) {
    dots[i].classList.remove("active");
  }
  slides[slideIndex - 1].classList.add("active");
  dots[slideIndex - 1].classList.add("active");
}

* {
  box-sizing: border-box
}
body {
  font-family: Verdana, sans-serif;
  margin: 0
}

/* Slideshow container */
.slideshow-container {
  height: 200px;
  position: relative;
  background: #f1f1f1f1;
}

/* Slides */
.mySlides {
  width: 100%;
  position: absolute;
  opacity: 0;
  padding: 80px;
  text-align: center;
  
  transition: opacity 0.25s;
}
.mySlides.active {
  opacity: 1;
}

/* Next & previous buttons */
.prev,
.next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -30px;
  padding: 16px;
  color: #888;
  font-weight: bold;
  font-size: 20px;
  border-radius: 0 3px 3px 0;
  user-select: none;
}

/* Position the "next button" to the right */
.next {
  position: absolute;
  right: 0;
  border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
}

/* The dot/bullet/indicator container */
.dot-container {
  text-align: center;
  padding: 20px;
  background: #ddd;
}

/* The dots/bullets/indicators */
.dot {
  cursor: pointer;
  height: 15px;
  width: 15px;
  margin: 0 2px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.6s ease;
}

/* Add a background color to the active dot/circle */
.dot.active,
.dot:hover {
  background-color: #717171;
}

/* Add an italic font style to all quotes */
q {
  font-style: italic;
}

/* Add a blue color to the author */
.author {
  color: cornflowerblue;
}

<div class="slideshow-container">
  <div class="mySlides">
    <q>I love you the more in that I believe you had liked me for my own sake and for nothing else</q>
    <p class="author">- John Keats</p>
  </div>
  <div class="mySlides">
    <q>But man is not made for defeat. A man can be destroyed but not defeated.</q>
    <p class="author">- Ernest Hemingway</p>
  </div>
  <div class="mySlides">
    <q>I have not failed. I've just found 10,000 ways that won't work.</q>
    <p class="author">- Thomas A. Edison</p>
  </div>
  <a class="prev" onclick="plusSlides(-1)">❮</a>
  <a class="next" onclick="plusSlides(1)">❯</a>
</div>
<div class="dot-container">
  <span class="dot" onclick="currentSlide(1)"></span>
  <span class="dot" onclick="currentSlide(2)"></span>
  <span class="dot" onclick="currentSlide(3)"></span>
</div>