photoswiper插件如何使用

Photoswiper是一个基于JavaScript的图像和视频库，它可以在移动和桌面设备上创建响应式的、自适应的图像和视频库。以下是使用Photoswiper插件的步骤：

1.下载Photoswiper插件，通过以下链接下载最新版本的Photoswiper：https://github.com/dimsemenov/PhotoSwipe

2.将文件解压缩到您的Web服务器上，确保您的项目文件夹包含以下文件：

- photoswipe.css
- photoswipe.js
- photoswipe-ui-default.css
- photoswipe-ui-default.js

3.在项目中引用Photoswiper插件，将以下代码添加到您的HTML文件中：

<link rel="stylesheet" href="photoswipe.css">
<link rel="stylesheet" href="photoswipe-ui-default.css">
<script src="photoswipe.js"></script>
<script src="photoswipe-ui-default.js"></script>

4.为您的图像和视频创建相应的HTML标记，例如：

<div class="my-gallery" itemscope itemtype="http://schema.org/ImageGallery">
<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="large-image.jpg" itemprop="contentUrl" data-size="1200x800">
<img src="small-image.jpg" itemprop="thumbnail" alt="Image description" />
</a>
<figcaption itemprop="caption description">Image caption goes here...</figcaption>
</figure>
</div>

5.初始化Photoswiper插件，在您的JavaScript文件中添加以下代码：

var initPhotoSwipeFromDOM = function(gallerySelector) {
var parseThumbnailElements = function(el) {
var thumbElements = el.childNodes,
numNodes = thumbElements.length,
items = [],
figureEl,
linkEl,
size,
item;
for(var i = 0; i < numNodes; i++) {
figureEl = thumbElements[i];
if(figureEl.nodeType !== 1) {
continue;
}
linkEl = figureEl.children[0];
size = linkEl.getAttribute('data-size').split('x');
item = {
src: linkEl.getAttribute('href'),
w: parseInt(size[0], 10),
h: parseInt(size[1], 10)
};
if(figureEl.children.length > 1) {
item.title = figureEl.children[1].innerHTML;
}
if(linkEl.children.length > 0) {
item.msrc = linkEl.children[0].getAttribute('src');
}
item.el = figureEl;
items.push(item);
}
return items;
};
var closest = function closest(el, fn) {
return el && ( fn(el) ? el : closest(el.parentNode, fn) );
};
var onThumbnailsClick = function(e) {
e = e || window.event;
e.preventDefault ? e.preventDefault() : e.returnValue = false;
var eTarget = e.target || e.srcElement;
var clickedListItem = closest(eTarget, function(el) {
return (el.tagName && el.tagName.toUpperCase() === 'FIGURE');
});
if(!clickedListItem) {
return;
}
var clickedGallery = clickedListItem.parentNode,
childNodes = clickedListItem.parentNode.childNodes,
numChildNodes = childNodes.length,
nodeIndex = 0,
index;
for (var i = 0; i < numChildNodes; i++) {
if(childNodes[i].nodeType !== 1) {
continue;
}
if(childNodes[i] === clickedListItem) {
index = nodeIndex;
break;
}
nodeIndex++;
}
if(index >= 0) {
openPhotoSwipe( index, clickedGallery );
}
return false;
};
var photoswipeParseHash = function() {
var hash = window.location.hash.substring(1),
params = {};
if(hash.length < 5) {
return params;
}
var vars = hash.split('&');
for (var i = 0; i < vars.length; i++) {
if(!vars[i]) {
continue;
}
var pair = vars[i].split('=');
if(pair.length < 2) {
continue;
}
params[pair[0]] = pair[1];
}
if(params.gid) {
params.gid = parseInt(params.gid, 10);
}
return params;
};
var openPhotoSwipe = function(index, galleryElement, disableAnimation, fromURL) {
var pswpElement = document.querySelectorAll('.pswp')[0],
gallery,
options,
items;
items = parseThumbnailElements(galleryElement);
options = {
galleryUID: galleryElement.getAttribute('data-pswp-uid'),
getThumbBoundsFn: function(index) {
var thumbnail = items[index].el.getElementsByTagName('img')[0],
pageYScroll = window.pageYOffset || document.documentElement.scrollTop,
rect = thumbnail.getBoundingClientRect();
return {x:rect.left, y:rect.top + pageYScroll, w:rect.width};
}
};
if(fromURL) {
if(options.galleryPIDs) {
for(var j = 0; j < items.length; j++) {
if(items[j].pid == index) {
options.index = j;
break;
}
}
} else {
options.index = parseInt(index, 10) - 1;
}
} else {
options.index = parseInt(index, 10);
}
if( isNaN(options.index) ) {
return;
}
if(disableAnimation) {
options.showAnimationDuration = 0;
}
gallery = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, items, options);
gallery.init();
};
var galleryElements = document.querySelectorAll( gallerySelector );
for(var i = 0, l = galleryElements.length; i < l; i++) {
galleryElements[i].setAttribute('data-pswp-uid', i+1);
galleryElements[i].onclick = onThumbnailsClick;
}
var hashData = photoswipeParseHash();
if(hashData.pid && hashData.gid) {
openPhotoSwipe( hashData.pid , galleryElements[ hashData.gid - 1 ], true, true );
}
};
initPhotoSwipeFromDOM('.my-gallery');

6.保存您的文件并在浏览器中打开它，您应该能够通过单击图像和视频来启动Photoswiper插件。

注意：Photoswiper插件需要JQuery库的支持，因此请确保您已经在您的项目中引用了JQuery库。