好用并强大的图片插件:PhotoSwipe.js

插件下载地址:https://pan.baidu.com/s/1kfnX6L54kU_NmQTZdLl94w

密码:zn2b



    
    



var initPhotoSwipeFromDOM = function(gallerySelector) {
        // 解析来自DOM元素幻灯片数据(URL,标题,大小...)
        var parseThumbnailElements = function(el) {
            var thumbElements = el.childNodes,
                numNodes = thumbElements.length,
                items = [],
                figureEl,
                linkEl,
                size,
                item,
                divEl;
            for(var i = 0; i < numNodes; i++) {
                figureEl = thumbElements[i]; // 
element // 仅包括元素节点 if(figureEl.nodeType !== 1) { continue; } divEl = figureEl.children[0]; linkEl = divEl.children[0]; // element var img = new Image(); img.src = linkEl.getAttribute('href'); linkEl.setAttribute('data-size', img.naturalWidth + 'x' + img.naturalHeight); size = linkEl.getAttribute('data-size').split('x'); // 创建幻灯片对象 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) { // 缩略图节点, 检索缩略图网址 item.msrc = linkEl.children[0].getAttribute('src'); } item.el = figureEl; // 保存链接元素 for getThumbBoundsFn items.push(item); } return items; }; // 查找最近的父节点 var closest = function closest(el, fn) { return el && ( fn(el) ? el : closest(el.parentNode, fn) ); }; // 当用户点击缩略图触发 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); // 这里可以定义参数 options = { index: 0, barsSize: { top: 100, bottom: 100 }, //全屏模式关闭 fullscreenEl : false, //点击图片关闭 tapToClose: true, //分享按钮 shareButtons: [ // {id:'wechat', label:'分享微信', url:'#'}, // {id:'weibo', label:'新浪微博', url:'#'}, {id:'download', label:'保存图片', url:'{{raw_image_url}}', download:true} ], galleryUID: galleryElement.getAttribute('data-pswp-uid'), getThumbBoundsFn: function(index) { var thumbnail = items[index].el.getElementsByTagName('img')[0], // find thumbnail 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 ); } };
//图片预览
                initPhotoSwipeFromDOM('.my-gallery');

Git地址:https://github.com/dimsemenov/photoswipe

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