如何使用 JavaScript 和 CSS 创建模式弹出窗口?
创建模式弹出窗口意味着添加一个对话框,该对话框在点击按钮时生成并在用户点击弹出窗口外部的任意位置时关闭。
以下是带有标题和文本的弹出窗口的显示方式。你还可以为其添加一个页脚 −

要使用 CSS 和 JavaScript 创建模式弹出窗口,请尝试运行以下代码 −
示例
<!DOCTYPE html>
<html>
<head>
<style>
.popup {
display: none;
position: fixed;
z-index: 1;
left: 0;
top: 0;
width: 100%;
height: 100%;
background-color: #F1F1F1;
background-color: rgba(0,0,0,0.4);
-webkit-animation-name: fadeIn;
-webkit-animation-duration: 0.4s;
animation-name: fadeIn;
animation-duration: 0.4s
}
.popup-content {
position: fixed;
bottom: 0;
background-color: #ffffff;
width: 100%;
-webkit-animation-name: slideIn;
-webkit-animation-duration: 0.5s;
animation-name: slideIn;
animation-duration: 0.5s
}
.end {
color: white;
float: right;
font-size: 15px;
font-weight: bold;
}
.end:hover,
.end:focus {
color: #000;
text-decoration: underline;
cursor: pointer;
}
.popup-header {
padding: 1px 10px;
background-color: #8AC1E0;
color: white;
}
.popup-body {padding: 1px 5px;}
@-webkit-keyframes slideIn {
from {bottom: -300px; opacity: 0}
to {bottom: 0; opacity: 1}
}
@keyframes slideIn {
from {bottom: -300px; opacity: 0}
to {bottom: 0; opacity: 1}
}
@-webkit-keyframes fadeIn {
from {opacity: 0}
to {opacity: 1}
}
@keyframes fadeIn {
from {opacity: 0}
to {opacity: 1}
}
</style>
</head>
<body>
<h2>Heading</h2>
<button id="btn">Click for Popup</button>
<div id="myModal" class="popup">
<!-- Modal content -->
<div class="popup-content">
<div class="popup-header">
<span class="end">×</span>
<h2>Header</h2>
</div>
<div class="popup-body">
<p>Demo Text</p>
</div>
</div>
</div>
<script>
var popup = document.getElementById('myModal');
var myBytton = document.getElementById("btn");
var span = document.getElementsByClassName("end")[0];
myBytton.onclick = function() {
popup.style.display = "block";
}
span.onclick = function() {
popup.style.display = "none";
}
window.onclick = function(event) {
if (event.target == popup) {
popup.style.display = "none";
}
}
</script>
</body>
</html>
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