我正在创建一个图片库，我希望能够通过单击打开全尺寸图像。
问题是我没有使用 img 标签，我使用 div 和 background-image 创建它。
我知道如何使用id对单个图像执行此操作，代码如下。但是，我无法使用 classes 使其与多个 div 一起使用。这可能很简单，但我知道基本的 JavaScript，这不足以完成此任务。我在这个问题上进行了很多搜索，但没有结果。我尝试过灯箱，但无法使其与背景图像一起使用。任何帮助，甚至是一些让我走上正确道路的提示，我们将不胜感激。
var modal = document.getElementById("myModal");
var img = document.getElementById("tehran");
var backgroundImage = img.style.backgroundImage.slice(4, -1).replace(/"/g, '');
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
img.onclick = function() {
modal.style.display = "block";
modalImg.src = backgroundImage;
}
// close the modal
var span = document.getElementsByClassName("close")[0];
span.onclick = function() {
modal.style.display = "none";
}.close {
position: absolute;
top: 15px;
right: 35px;
color: #f1f1f1;
font-size: 40px;
font-weight: bold;
transition: 0.3s;
}
.close:hover,
.close:focus {
color: #bbb;
text-decoration: none;
cursor: pointer;
}
.img {
display: block;
width: 200px;
height: 100%;
margin-right: 10px;
background-size: cover;
background-position: center;
background-repeat: no-repeat;
cursor: pointer;
}
.img-container {
display: flex;
height: 100px;
min-height: 20rem;
}
.modal {
display: none;
position: fixed;
z-index: 1;
padding-top: 100px;
left: 0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
background-color: rgb(0, 0, 0);
background-color: rgba(0, 0, 0, 0.9);
}
.modal-content {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
animation-name: zoom;
animation-duration: 0.6s;
}
@keyframes zoom {
from {
transform: scale(0)
}
to {
transform: scale(1)
}
}<body>
<div class="img-container">
<div id="tehran" class="img" style="background-image: url(https://images.unsplash.com/photo-1524567492592-cee28084482e?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=600&q=60)"></div>
<div id="masuleh" class="img" style="background-image: url(https://images.unsplash.com/photo-1567317255448-8e6c04e22114?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=634&q=80)"></div>
<div id="zanjan" class="img" style="background-image: url(https://images.unsplash.com/photo-1518727577784-f62f1115eefb?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80)"></div>
</div>
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- The Close Button -->
<span class="close">×</span>
<!-- Modal Content -->
<img id="img01" class="modal-content">
<div id="caption"></div>
</div>
</body>最佳答案
(我还做了一些 css 更改，使模态图像不会溢出页面)
var modal = document.getElementById("myModal");
Array.from(document.querySelectorAll('.img-container .img')).forEach(function(img){
img.onclick = function() {
var backgroundImage = img.style.backgroundImage.slice(4, -1).replace(/"/g, '');
modal.style.display = "flex";
modalImg.src = backgroundImage;
}
});
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
// close the modal
var span = document.getElementsByClassName("close")[0];
span.onclick = function() {
modal.style.display = "none";
}.close {
position: absolute;
top: 15px;
right: 35px;
color: #f1f1f1;
font-size: 40px;
font-weight: bold;
transition: 0.3s;
}
.close:hover,
.close:focus {
color: #bbb;
text-decoration: none;
cursor: pointer;
}
.img {
display: block;
width: 200px;
height: 100%;
margin-right: 10px;
background-size: cover;
background-position: center;
background-repeat: no-repeat;
cursor: pointer;
}
.img-container {
display: flex;
height: 100px;
min-height: 20rem;
}
.modal {
display: none;
position: fixed;
z-index: 1;
left: 0;
top: 0;
width: 100%;
height: 100%;
box-sizing: border-box;
overflow: auto;
background-color: rgb(0, 0, 0);
background-color: rgba(0, 0, 0, 0.9);
justify-content: center;
align-items: center;
}
.modal-content {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
max-height: 80%;
object-fit: contain;
-o-object-fit: contain;
animation-name: zoom;
animation-duration: 0.6s;
}
@keyframes zoom {
from {
transform: scale(0)
}
to {
transform: scale(1)
}
}<body>
<div class="img-container">
<div id="tehran" class="img" style="background-image: url(https://images.unsplash.com/photo-1524567492592-cee28084482e?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=600&q=60)"></div>
<div id="masuleh" class="img" style="background-image: url(https://images.unsplash.com/photo-1567317255448-8e6c04e22114?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=634&q=80)"></div>
<div id="zanjan" class="img" style="background-image: url(https://images.unsplash.com/photo-1518727577784-f62f1115eefb?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80)"></div>
</div>
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- The Close Button -->
<span class="close">×</span>
<!-- Modal Content -->
<img id="img01" class="modal-content">
<div id="caption"></div>
</div>
</body>关于javascript - 如何使用 JavaScript 获取多个 div 的背景图像并将它们用作模态图像的来源？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60614223/