本文我们为大家介绍如何使用 HTML、JavaScript 与 CSS 来创建 Lightbox,类似相册预览功能。

HTML 代码:

[mycode3 type="html"]

Lightbox

[/mycode3]

CSS 代码:

[mycode3 type="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%;
}

/* 弹窗背景 */
.modal {
display: none;
position: fixed;
z-index: 1;
padding-top: 100px;
left: 0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
background-color: black;
}

/* 弹窗内容 */
.modal-content {
position: relative;
background-color: #fefefe;
margin: auto;
padding: 0;
width: 90%;
max-width: 1200px;
}

/* 关闭按钮 */
.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
}

/* 上一页 & 下一页 按钮 */
.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;
}

/* 定位下一页按钮到右侧 */
.next {
right: 0;
border-radius: 3px 0 0 3px;
}

/* 鼠标移动上去修改背景色为黑色 */
.prev:hover,
.next:hover {
background-color: rgba(0, 0, 0, 0.8);
}

/* 页数(1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}

img {
margin-bottom: -4px;
}

.caption-container {
text-align: center;
background-color: black;
padding: 2px 16px;
color: white;
}

.demo {
opacity: 0.6;
}

.active,
.demo:hover {
opacity: 1;
}

img.hover-shadow {
transition: 0.3s
}

.hover-shadow:hover {
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19)
}
[/mycode3]

JavaScript 代码:

[mycode3 type="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; } [/mycode3]

在线演示