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强大的图片预览组件Viewer.js(强大的图片预览软件)
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1、 Viewer.js简介Viewer.js 是一款强大的图片查看器。我们通过Viewer.js 在页面上添加强大的图片查看功能，同时，这款优秀的插件配置操作起来也非常的方便。
Viewer.js分为2个版本，js版本和jquery版本，下载地址分别为
纯JS版本：https://github.com/fengyuanchen/viewerjs
jQuery 版本：GitHub - fengyuanchen/jquery-viewer: A jQuery plugin wrapper for Viewer.js.、
网上看到有说jquery版本有bug，最后选用啦js版本，demo截图大概如下：
2、Viewer.js支持的功能支持移动设备触摸事件 支持响应式 支持放大/缩小 支持旋转(类似微博的图片旋转) 支持水平/垂直翻转 支持图片移动 支持键盘 支持全屏幻灯片模式(可做屏保) 支持缩略图 支持标题显示 支持多种自定义事件
3、Viewer.js的API名称类型默认值说明inline布尔值false启用 inline 模式button布尔值true显示右上角关闭按钮(jQuery 版本无效)navbar布尔值/整型true显示缩略图导航title布尔值/整型true显示当前图片的标题(现实 alt 属性及图片尺寸)toolbar布尔值/整型true显示工具栏tooltip布尔值true显示缩放百分比movable布尔值true图片是否可移动zoomable布尔值true图片是否可缩放rotatable布尔值true图片是否可旋转scalable布尔值true图片是否可翻转transition布尔值true使用 CSS3 过度fullscreen布尔值true播放时是否全屏keyboard布尔值true是否支持键盘interval整型5000播放间隔，单位为毫秒zoomRatio浮点型0.1鼠标滚动时的缩放比例minZoomRatio浮点型0.01最小缩放比例maxZoomRatio数字100最大缩放比例zIndex数字2015设置图片查看器 modal 模式时的 z-indexzIndexInline数字0设置图片查看器 inline 模式时的 z-indexurl字符串/函数src设置大图片的 urlbuild函数null回调函数，具体查看演示built函数null回调函数，具体查看演示show函数null回调函数，具体查看演示shown函数null回调函数，具体查看演示hide函数null回调函数，具体查看演示hidden函数null回调函数，具体查看演示view函数null回调函数，具体查看演示viewed函数null回调函数，具体查看演示4 使用方法4.1 引入方式js，jquery版本,直接文件引入 Javascript版：
<link rel="stylesheet" href="css/viewer.min.css"><script src="js/viewer.min.js"></script>jQuery版：
<link rel="stylesheet" href="css/viewer.min.css"> <script src="js/jquery.min.js"></script> <script src="js/viewer.min.js"></script>npm，直接install
npm install viewerjs4.2 简单demo这里为我用的是js版本，简单做了一个demo html代码
<!doctype html><html lang="en" ng-app="pharosApp"><head> <meta charset="utf-8"> <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" /> <meta http-equiv="Pragma" content="no-cache" /> <meta http-equiv="Expires" content="0" /> <title>图片预览</title> <link rel="stylesheet" href="viewer.min.css" /> <script src="jquery.min.js"></script> <script type="text/javascript" src="viewer.min.js"></script> <style> #viewer { padding: 2%; } #viewer img { margin: 1%; width: 22.5%; height: 200px; object-fit:fill; } </style> <script> function previewImg() { var viewer = new Viewer(document.getElementById('viewer'), { button: true, inline: false, zoomable: true, title: true, tooltip: true, minZoomRatio: 0.5, maxZoomRatio: 100, movable: true, interval: 2000, navbar: true, loading: true, show: function () { viewer.update(); } }); $("body").on("click", ".viewer-container", function (e) { viewer.hide() }); $("body").on("click", ".viewer-canvas", function (e) { e.stopPropagation(); }); $("body").on("click", ".viewer-footer", function (e) { e.stopPropagation(); }); $("body").on("click", ".viewer-button", function (e) { e.stopPropagation(); }); $("body").on("click", ".viewer-tooltip", function (e) { e.stopPropagation(); }); $("body").on("click", ".viewer-player", function (e) { e.stopPropagation(); }); } </script></head><body> <div id="viewer"> <img src="1.png" /> <img src="2.png" /> <img src="3.png" /> </div></body></html>5.viewer.js源码，js版本viewer.min.css
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data-action="zoom-in"></li><li class="viewer-zoom-out" data-action="zoom-out"></li><li class="viewer-one-to-one" data-action="one-to-one"></li><li class="viewer-reset" data-action="reset"></li><li class="viewer-prev" data-action="prev"></li><li class="viewer-play" data-action="play"></li><li class="viewer-next" data-action="next"></li><li class="viewer-rotate-left" data-action="rotate-left"></li><li class="viewer-rotate-right" data-action="rotate-right"></li><li class="viewer-flip-horizontal" data-action="flip-horizontal"></li><li class="viewer-flip-vertical" data-action="flip-vertical"></li></ul><div class="viewer-navbar"><ul class="viewer-list"></ul></div></div><div class="viewer-tooltip"></div><div class="viewer-button" data-action="mix"></div><div class="viewer-player"></div></div>';var Re=e.Viewer;return O.noConflict=function(){return e.Viewer=Re,O},O.setDefaults=function(e){h(O.DEFAULTS,e)},"function"==typeof define&&define.amd&&define("viewer",[],function(){return O}),t||(e.Viewer=O),O});```上一篇：CV攻城狮入门VIT(vision transformer)之旅——VIT原理详解篇
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