模态相册
初衷：很多人在初学前端的时候都会问，“如何入门前端？”
同为在前端学习道路上，奋力追赶的一员，本人对于目前网络上所能看到的 “入门级” 的教材并不太满意。学习一门新知识，实例是尤其重要的。在这里本人整理了目前页面上常见功能实现的具体实例。愿能为大家提供一些帮助。
希望能够与大家互相分享，共同进步。
HTML部分
<!-- 图片栏 -->
<div class="row">
<div class="column">
<img src="img1.jpg" class="hover-shadow triggerImg">
</div>
<div class="column">
<img src="img2.jpg" class="hover-shadow triggerImg">
</div>
<div class="column">
<img src="img3.jpg" class="hover-shadow triggerImg">
</div>
<div class="column">
<img src="img4.jpg" class="hover-shadow triggerImg">
</div>
</div>
<!-- 模态框 -->
<div id="myModal" class="modal">
<span class="close cursor" id="closeBtn">×</span>
<!-- 模态内容 -->
<div class="modal-content">
<!-- 模态内容中的照片 -->
<div class="mySlides">
<div class="numbertext">1 / 4</div>
<img src="img1.jpg">
</div>
<div class="mySlides">
<div class="numbertext">2 / 4</div>
<img src="img2.jpg">
</div>
<div class="mySlides">
<div class="numbertext">3 / 4</div>
<img src="img3.jpg">
</div>
<div class="mySlides">
<div class="numbertext">4 / 4</div>
<img src="img4.jpg">
</div>
<!-- 后翻页 -->
<a class="prev">❮</a>
<!-- 前翻页 -->
<a class="next">❯</a>
<!-- 图片标题 -->
<div class="caption-container">
<p id="caption"></p>
</div>
<!-- 列出待选图片（包括正在显示的图片） -->
<div class="column">
<img class="demo" src="img1.jpg" alt="图片1">
</div>
<div class="column">
<img class="demo" src="img2.jpg" alt="图片2">
</div>
<div class="column">
<img class="demo" src="img3.jpg" alt="图片3">
</div>
<div class="column">
<img class="demo" src="img4.jpg" alt="图片4">
</div>
</div>
</div>CSS 部分
/*初始化*/
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
.row > .column {
padding: 0 8px;
}
/*清除浮动*/
.row:after {
content: "";
display: table;
clear: both;
}
.column {
float: left;
width: 25%;
}
.column img {
width: 100%;
cursor: pointer;
}
/*模态框*/
.modal {
display: none;
position: fixed;
z-index: 1;
padding-top: 100px;
left: 0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
background-color: rgba(0,0,0,0.9);
}
/*模态内容*/
.modal-content {
position: relative;
background-color: #fefefe;
margin: 0 auto;
padding: 0;
width: 90%;
max-width: 1200px;
animation: zoomShow 0.5s; /*添加动画*/
}
@keyframes zoomShow {
from {transform: scale(0)}
to {transform: scale(1)}
}
/*关闭按钮*/
.close {
color: white;
position: absolute;
top: 10px;
right: 25px;
font-size: 35px;
font-weight: bold;
}
.close:hover {
color: #999;
text-decoration: none;
cursor: pointer;
}
/*模态图片*/
.mySlides {
display: none;
background-color: rgba(0,0,0,0.9);
animation: fadeShow 0.5s; /*添加动画*/
}
@keyframes fadeShow {
from {opacity: 0}
to {opacity: 1}
}
.mySlides img {
width: 100%;
}
/*前翻后翻*/
.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;
}
.next {
right: 0;
border-radius: 3px 0 0 3px;
}
.prev:hover,
.next:hover {
background-color: rgba(0, 0, 0, 0.8);
}
/*定位数字*/
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
/*图片标题*/
.caption-container {
text-align: center;
background-color: rgba(0,0,0,0.9);
padding: 5px 16px 10px;
color: white;
}
img.demo {
opacity: 0.6;
}
.active,
.demo:hover {
opacity: 1;
}
img.hover-shadow {
transition: 0.3s
}
img.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)
}JavaScript 部分
(function() {
/*打开模态框*/
function openModal() {
var myModal = document.getElementById('myModal');
myModal.style.display = "block";
}
/*关闭模态框*/
function closeModal() {
var myModal = document.getElementById('myModal');
myModal.style.display = "none";
}
/*切换模态图*/
function changeSlide(num) {
var currentSlide,
slides = document.getElementsByClassName("mySlides");
for (index = 0; index < slides.length; index++) {
if(slides[index].style.display == "block") {
currentSlide = index + 1;
}
}
showSlide(currentSlide += num);
}
/*显现模态图*/
function showSlide(num) {
var index,
slides = document.getElementsByClassName("mySlides"),
dots = document.getElementsByClassName("demo"),
captionText = document.getElementById("caption");
if (num > slides.length) {
num = 1
}
if (num < 1) {
num = slides.length
}
for (index = 0; index < slides.length; index++) {
slides[index].style.display = "none";
}
for (index = 0; index < dots.length; index++) {
dots[index].classList.remove("active");
}
slides[num - 1].style.display = "block";
dots[num - 1].classList.add("active");
captionText.innerHTML = dots[num - 1].alt;
}
/*点击模态内容以外，自动关闭*/
function clickOutside() {
var myModal = document.getElementById('myModal');
window.onclick = function(event) {
if(event.target == myModal) {
closeModal();
}
}
}
/*绑定事件监听*/
function addEvent() {
var index,
triggerImgs = document.getElementsByClassName("triggerImg"),
dots = document.getElementsByClassName("demo"),
closeBtn = document.getElementById("closeBtn"),
prevBtn = document.getElementsByClassName("prev")[0],
nextBtn = document.getElementsByClassName("next")[0];
for(index = 0; index < triggerImgs.length; index++) {
(function(index) {
triggerImgs[index].onclick = function() {
openModal();
showSlide(index + 1);
}
})(index);
}
for(index = 0; index < dots.length; index++) {
(function(index) {
dots[index].onclick = function() {
showSlide(index + 1);
}
})(index);
}
prevBtn.onclick = function() {
changeSlide(-1);
}
nextBtn.onclick = function() {
changeSlide(1);
}
closeBtn.onclick = function() {
closeModal();
}
}
/*初始化*/
function init() {
addEvent();
clickOutside();
}
/*调用*/
init();
})();好啦，现在所有的代码都写完啦！
赶快打开浏览器，看看效果吧！
在这里，只是给大家提供一种思路，参考。
具体的实现，每个人都可以有不同的方法。
请大家赶快发挥想象，把你最想实现的功能，在电脑敲出来吧！
