html图片轮播的代码

HTML图片轮播可以使用HTML、CSS和JavaScript来实现。以下是一个简单的HTML图片轮播的代码：

HTML代码：

<div class="slideshow-container">
  <div class="mySlides fade">
    <img src="img1.jpg" style="width:100%">
  </div>

  <div class="mySlides fade">
    <img src="img2.jpg" style="width:100%">
  </div>

  <div class="mySlides fade">
    <img src="img3.jpg" style="width:100%">
  </div>
</div>
<br>

<div style="text-align:center">
  <span class="dot"></span> 
  <span class="dot"></span> 
  <span class="dot"></span> 
</div>

CSS代码：

.slideshow-container {
  max-width: 1000px;
  position: relative;
  margin: auto;
}

.mySlides {
  display: none;
}

.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  padding: 16px;
  margin-top: -22px;
  color: white;
  font-weight: bold;
  font-size: 18px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
}

.next {
  right: 0;
  border-radius: 3px 0 0 3px;
}

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

.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;
}

.active, .dot:hover {
  background-color: #717171;
}

.fade {
  -webkit-animation-name: fade;
  -webkit-animation-duration: 1.5s;
  animation-name: fade;
  animation-duration: 1.5s;
}

@-webkit-keyframes fade {
  from {opacity: .4} 
  to {opacity: 1}
}

@keyframes fade {
  from {opacity: .4} 
  to {opacity: 1}
}

JavaScript代码：

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";
}

以上代码使用了CSS3的动画效果，通过JavaScript来控制图片的显示和隐藏。同时还可以通过左右箭头或者下方的圆点来进行图片的切换。