CSS3 图片模态化

这是一个演示 CSS 和 JavaScript 如何协同工作的例子。

首先，请使用 CSS 创建模态窗口（对话框），并默认将其隐藏。

然后，当用户单击图片时，使用 JavaScript 显示模态窗口并在模态内部显示图片：

代码如下：

<!DOCTYPE html>
<html>
<head>
<style>
#myImg {
  border-radius: 5px;
  cursor: pointer;
  transition: 0.3s;
}
#myImg:hover {opacity: 0.7;}
/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  padding-top: 100px; /* Location of the box */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}
/* Modal Content (image) */
.modal-content {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
}
/* Caption of Modal Image */
#caption {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
  text-align: center;
  color: #ccc;
  padding: 10px 0;
  height: 150px;
}
/* Add Animation */
.modal-content, #caption {
  animation-name: zoom;
  animation-duration: 0.6s;
}
@keyframes zoom {
  from {transform: scale(0.1)}
  to {transform: scale(1)}
}
/* The Close Button */
.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;
}
/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
  .modal-content {
    width: 100%;
  }
}
</style>
</head>
<body>
<h2>Image Modal</h2>
<p>在本例中，我们使用CSS创建一个默认隐藏的模式（对话框）</p>
<p>我们使用JavaScript触发模态，并在单击模态时显示模态中的当前图像。还要注意的是，我们使用图像的“alt”属性中的值作为模态中的图像标题文本</p>
<p>如果您不马上理解代码，请不要担心。使用完CSS后，请转到我们的JavaScript教程了解更多信息</p>
<img id="myImg" src="/znadmin/md/1299/0.jpg" alt="Northern Lights, Norway" width="300" height="200">
<!-- The Modal -->
<div id="myModal" class="modal">
  <span class="close">&times;</span>
  <img class="modal-content" id="img01">
  <div id="caption"></div>
</div>
<script>
// Get the modal
var modal = document.getElementById('myModal');
// Get the image and insert it inside the modal - use its "alt" text as a caption
var img = document.getElementById('myImg');
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
img.onclick = function(){
  modal.style.display = "block";
  modalImg.src = this.src;
  captionText.innerHTML = this.alt;
}
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
  modal.style.display = "none";
}
</script>
</body>
</html>

运行一下

CSS3 图片模态化

分类导航