以下是一个简单的 JavaScript 弹窗代码实例。
HTML 代码：
<!-- 打开弹窗按钮 -->
<button id="myBtn">打开弹窗</button>
<!-- 弹窗 -->
<div id="myModal" class="modal">
<!-- 弹窗内容 -->
<div class="modal-content">
<span class="close">×</span>
<p>弹窗中的文本...</p>
</div>
</div>
CSS 代码：
/* 弹窗 (background) */
.modal {
display: none; /* 默认隐藏 */
position: fixed; /* 固定定位 */
z-index: 1; /* 设置在顶层 */
left: 0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
background-color: rgb(0,0,0);
background-color: rgba(0,0,0,0.4);
}
/* 弹窗内容 */
.modal-content {
background-color: #fefefe;
margin: 15% auto;
padding: 20px;
border: 1px solid #888;
width: 80%;
}
/* 关闭按钮 */
.close {
color: #aaa;
float: right;
font-size: 28px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: black;
text-decoration: none;
cursor: pointer;
}
JavaScript 代码：
// 获取弹窗
var modal = document.getElementById('myModal');
// 打开弹窗的按钮对象
var btn = document.getElementById("myBtn");
// 获取 <span> 元素，用于关闭弹窗
var span = document.querySelector('.close');
// 点击按钮打开弹窗
btn.onclick = function() {
modal.style.display = "block";
}
// 点击 <span> (x), 关闭弹窗
span.onclick = function() {
modal.style.display = "none";
}
// 在用户点击其他地方时，关闭弹窗
window.onclick = function(event) {
if (event.target == modal) {
modal.style.display = "none";
}
}
在线演示
弹窗添加头部和底部
HTML 代码：
<!-- 打开弹窗按钮 -->
<button id="myBtn">打开弹窗</button>
<!-- 弹窗 -->
<div id="myModal" class="modal">
<!-- 弹窗内容 -->
<div class="modal-content">
<div class="modal-header">
<span class="close">×</span>
<h2>弹窗头部</h2>
</div>
<div class="modal-body">
<p>弹窗文本...</p>
<p>弹窗文本...</p>
</div>
<div class="modal-footer">
<h3>弹窗底部</h3>
</div>
</div>
</div>
CSS 代码：
/* 弹窗 (background) */
.modal {
display: none; /* 默认隐藏 */
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(0,0,0,0.4);
}
/* 弹窗内容 */
.modal-content {
position: relative;
background-color: #fefefe;
margin: auto;
padding: 0;
border: 1px solid #888;
width: 80%;
box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
-webkit-animation-name: animatetop;
-webkit-animation-duration: 0.4s;
animation-name: animatetop;
animation-duration: 0.4s
}
/* 添加动画 */
@-webkit-keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
@keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
/* 关闭按钮 */
.close {
color: white;
float: right;
font-size: 28px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: #000;
text-decoration: none;
cursor: pointer;
}
.modal-header {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}
.modal-body {padding: 2px 16px;}
.modal-footer {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}
