简介
官网地址： https://photoswipe.com/
一款可以可以放大图片的插件。操作简单
引入依赖包
npm install photoswipe
使用
const PhotoSwipe = require('photoswipe')
const PhotoSwipeUI_Default = require('photoswipe/dist/photoswipe-ui-default')
require('photoswipe/dist/photoswipe.css')
require('photoswipe/dist/default-skin/default-skin.css')
引入相关样式和api
<!-- Root element of PhotoSwipe. Must have class pswp. -->
<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
<!-- Background of PhotoSwipe.
It's a separate element as animating opacity is faster than rgba(). -->
<div class="pswp__bg"></div>
<!-- Slides wrapper with overflow:hidden. -->
<div class="pswp__scroll-wrap">
<!-- Container that holds slides.
PhotoSwipe keeps only 3 of them in the DOM to save memory.
Don't modify these 3 pswp__item elements, data is added later on. -->
<div class="pswp__container">
<div class="pswp__item"></div>
<div class="pswp__item"></div>
<div class="pswp__item"></div>
</div>
<!-- Default (PhotoSwipeUI_Default) interface on top of sliding area. Can be changed. -->
<div class="pswp__ui pswp__ui--hidden">
<div class="pswp__top-bar">
<!-- Controls are self-explanatory. Order can be changed. -->
<div class="pswp__counter"></div>
<button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
<button class="pswp__button pswp__button--share" title="Share"></button>
<button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>
<button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>
<!-- Preloader demo https://codepen.io/dimsemenov/pen/yyBWoR -->
<!-- element will get class pswp__preloader--active when preloader is running -->
<div class="pswp__preloader">
<div class="pswp__preloader__icn">
<div class="pswp__preloader__cut">
<div class="pswp__preloader__donut"></div>
</div>
</div>
</div>
</div>
<div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
<div class="pswp__share-tooltip"></div>
</div>
<button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
</button>
<button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
</button>
<div class="pswp__caption">
<div class="pswp__caption__center"></div>
</div>
</div>
</div>
</div>
引入相关dom节点，只需要再你需要的页面引入即可，不会影响页面的结构
在js操作中获取图片的dom节点，给图片添加点击事件。
var pswpElement = document.querySelectorAll('.pswp')[0]; //上面添加的dom节点
var items = [
{
src: 'https://placekitten.com/600/400',//获取图片的src
w: 600, // 原始大小
h: 400
},
{
src: 'https://placekitten.com/1200/900',
w: 1200, // 放大后的大小
h: 900
}
];
// define options (if needed)
var options = {
// optionName: 'option value'
// for example:
index: 0 // start at first slide
};
// Initializes and opens PhotoSwipe
var gallery = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, items, options);
gallery.init();
官网demo地址：https://photoswipe.com/documentation/getting-started.html
当我们获取到的是图片数组时，在vue中不能直接遍历dom，需要转换一下。
let img = pswpElement.getElementsByTagName('img')
let arr1 = [].slice.call(img) //转化获取的dom节点数组
arr1.forEach((item) => {
item.addEventListener('click', e => {
this.openPhotoSwipe(e) //调用上面的js函数 传入节点获取src
})
})
多张图的时候使用方法
引入下面的函数，并传入dom节点
mounted () {
this.$nextTick(() => {
// document.getElementById('contentScroll').addEventListener('mousewheel', (event) => {
// event.stopPropagation()
// })
this.initPhotoSwipeFromDOM('.my-gallery')
})
},
......
initPhotoSwipeFromDOM (gallerySelector) {
// parse slide data (url, title, size ...) from DOM elements
// (children of gallerySelector)
var parseThumbnailElements = function (el) {
var thumbElements = el.childNodes
var numNodes = thumbElements.length
var items = []
var figureEl
var linkEl
var size
var item
for (var i = 0; i < numNodes; i++) {
figureEl = thumbElements[i] // <figure> element
// include only element nodes
if (figureEl.nodeType !== 1) {
continue
}
linkEl = figureEl.children[0] // <a> element
size = linkEl.getAttribute('data-size').split('x')
// create slide object
item = {
src: linkEl.getAttribute('href'),
w: parseInt(size[0], 10),
h: parseInt(size[1], 10)
}
if (figureEl.children.length > 1) {
// <figcaption> content
item.title = figureEl.children[1].innerHTML
}
if (linkEl.children.length > 0) {
// <img> thumbnail element, retrieving thumbnail url
item.msrc = linkEl.children[0].getAttribute('src')
}
item.el = figureEl // save link to element for getThumbBoundsFn
items.push(item)
}
return items
}
// find nearest parent element
var closest = function closest (el, fn) {
return el && (fn(el) ? el : closest(el.parentNode, fn))
}
// triggers when user clicks on thumbnail
var onThumbnailsClick = function (e) {
e = e || window.event
e.preventDefault ? e.preventDefault() : e.returnValue = false
var eTarget = e.target || e.srcElement
// find root element of slide
var clickedListItem = closest(eTarget, function (el) {
return (el.tagName && el.tagName.toUpperCase() === 'FIGURE')
})
if (!clickedListItem) {
return
}
// find index of clicked item by looping through all child nodes
// alternatively, you may define index via data- attribute
var clickedGallery = clickedListItem.parentNode
var childNodes = clickedListItem.parentNode.childNodes
var numChildNodes = childNodes.length
var nodeIndex = 0
var 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) {
// open PhotoSwipe if valid index found
openPhotoSwipe(index, clickedGallery)
}
return false
}
// parse picture index and gallery index from URL (#&pid=1&gid=2)
var photoswipeParseHash = function () {
var hash = window.location.hash.substring(1)
var 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
}
html j结构
<div class="more-img my-gallery" v-else>
<figure itemprop="associatedMedia" itemscope v-for="(item,index) in imgListData" :key="index">
<a :href="item.image_big" itemprop="contentUrl" data-size="100%x100%">
<img :src="item.image_small" itemprop="thumbnail" alt="Image description" />
</a>
</figure>
</div>
网友评论