Question

我有一个模态图像，点击时会打开幻灯片，但起初我无法保持幻灯片的大小相同，然后在我开始工作之后，我无法保持图像的显示效果。宽高比。我为图像做的工作太长了，但对于那些太宽的图片来说并非如此。图像不会改变div的高度，但现在如果图像更长，图像将从幻灯片的侧面伸出。我希望它缩小（同时保持比例）以适应它。This is kind of what it should be，阴影部分是图像。我希望这很清楚，如果不是我会尽力澄清，改变小提琴的横向大小可能会有所帮助。编辑：我通过评论家的建议对其进行了改进，但是当我水平缩小幻灯片时，一些图像会变得微微而不是缩小到缩放（就像800X1200图像那样），无论出于什么原因，第一张图像如果我也会变得微笑垂直改变窗口也会扭曲图像。

或者，如果你不知道如何做到这一点我想到可能使用bootstrap的默认轮播并让它弹出就像我的一样，我相信bootstrap可以更好地适用于不同大小的图像，但我无法理解这一点。

JSFIDDLE HTML：

<body>

  <h2 style="text-align:center">Modal Albums</h2>

  <div class="row">
    <div class="column">
      <img src="https://www.yosemitehikes.com/images/wallpaper/yosemitehikes.com-bridalveil-winter-1200x800.jpg" style="width:100%" onclick="openModal();currentSlide(1)" class="hover-shadow cursor">
    </div>
  </div>

  <div id="myModal" class="modal">
    <span class="close cursor" onclick="closeModal()">&times;</span>
    <div class="modal-content">

      <div class="mySlides">
        <div class="numbertext">1 / 4</div>
        <img src="http://chasingseals.com/wp-content/uploads/2014/02/greenlandBanner2000x800.jpg" style="width:auto%">
      </div>

      <div class="mySlides">
        <div class="numbertext">2 / 4</div>
        <img src="http://www.catholicevangelism.org/wp-content/uploads/2013/06/1200x800.gif" style="width:auto">
      </div>

      <div class="mySlides">
        <div class="numbertext">3 / 4</div>
        <img src="http://www.a1carpet-to.com/wp-content/uploads/2015/08/600x400.png" style="width:auto">
      </div>

      <div class="mySlides">
        <div class="numbertext">4 / 4</div>
        <img src="https://support.kickofflabs.com/wp-content/uploads/2016/06/800x1200.png" style="width:auto">
      </div>

      <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
      <a class="next" onclick="plusSlides(1)">&#10095;</a>

    </div>
  </div>

CSS：

 body {
   font-family: Verdana, sans-serif;
   margin: 0;
 }

 * {
   box-sizing: border-box;
 }

 .row > .column {
   padding: 0 8px;
 }

 .row:after {
   content: "";
   display: table;
   clear: both;
 }

 .column {
   float: left;
   width: 25%;
 }
 /* The Modal (background) */

 .modal {
   display: none;
   position: fixed;
   z-index: 1;
   padding-top: 100px;
   left: 0;
   top: 0;
   width: 100%;
   height: 100%;
   overflow: auto;
   background: rgba(0, 0, 0, 0.9);
 }
 /* Modal Content */

 .modal-content {
   position: relative;
   background-color: rgba(0, 0, 0, 0.9);
   margin: auto;
   padding: 0;
   width: 90%;
   max-width: 1200px;
 }
 /* The Close Button */

 .close {
   color: white;
   position: absolute;
   top: 10px;
   right: 25px;
   font-size: 35px;
   font-weight: bold;
 }

 .close:hover,
 .close:focus {
   color: #999;
   text-decoration: none;
   cursor: pointer;
 }

 .mySlides {
   display: none;
 }

 .cursor {
   cursor: pointer
 }
 /* Next & previous buttons */

 .prev,
 .next {
   cursor: pointer;
   position: absolute;
   top: 50%;
   width: auto;
   padding: 16px;
   margin-top: -50px;
   color: white;
   font-weight: bold;
   font-size: 20px;
   transition: 0.6s ease;
   border-radius: 0 3px 3px 0;
   user-select: none;
   -webkit-user-select: none;
 }
 /* Position the "next button" to the right */

 .next {
   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);
   text-decoration: none;
 }
 /* Number text (1/3 etc) */

 .numbertext {
   color: #f2f2f2;
   font-size: 12px;
   padding: 8px 12px;
   position: absolute;
   top: 0;
 }

 img {
   margin-bottom: -4px;
 }

 t img.hover-shadow {
   transition: all .2s ease-in-out;
 }

 .hover-shadow:hover {
   transform: scale(1.1);
 }

 .modal-content {
   -webkit-animation-name: zoom;
   -webkit-animation-duration: 0.6s;
   animation-name: zoom;
   animation-duration: 0.6s;
 }

 @-webkit-keyframes zoom {
   from {
     -webkit-transform: scale(0)
   }
   to {
     -webkit-transform: scale(1)
   }
 }

 @keyframes zoom {
   from {
     transform: scale(0)
   }
   to {
     transform: scale(1)
   }
 }


.mySlides img {
   height:100%;
   margin:0 auto;
   margin-bottom:50px;
}

.mySlides {
    text-align:center;
    height:80vh;
}

JS：

function openModal() {
  document.getElementById('myModal').style.display = "block";
}
function closeModal() {
  document.getElementById('myModal').style.display = "none";
}

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("demo");
  var captionText = document.getElementById("caption");
  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";
  captionText.innerHTML = dots[slideIndex - 1].alt;
}

Answer 1

我建议创建一个类而不是内联css。

检查jsfiddle

<Frame>

问题是由 width：auto 属性创建的。相反，使用 max-width：100％，它将占用模态的全宽。添加对象适合：缩小以确保显示整个图像，与其大小和比例无关。希望这可以帮助。

如何使水平长图像适合幻灯片放映？

1 个答案: