强大的图片预览组件Viewer.js

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：

在这里插入图片描述

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 viewerjs

4.2 简单demo

这里为我用的是js版本，简单做了一个demo
html代码

<!doctypehtml><htmllang="en"ng-app="pharosApp"><head><metacharset="utf-8"><metahttp-equiv="Cache-Control"content="no-cache, no-store, must-revalidate"/><metahttp-equiv="Pragma"content="no-cache"/><metahttp-equiv="Expires"content="0"/><title>图片预览</title><linkrel="stylesheet"href="viewer.min.css"/><scriptsrc="jquery.min.js"></script><scripttype="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>functionpreviewImg(){var viewer =newViewer(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><divid="viewer"><imgsrc="1.png"/><imgsrc="2.png"/><imgsrc="3.png"/></div></body></html>

5.viewer.js源码，js版本

viewer.min.css

/*!
 * Viewer.js v0.3.1
 * https://github.com/fengyuanchen/viewerjs
 *
 * Copyright (c) 2015-2016 Fengyuan Chen
 * Released under the MIT license
 *
 * Date: 2016-02-02T11:35:36.273Z
 */.viewer-container,.viewer-navbar{background-color:#000;overflow:hidden}.viewer-canvas,.viewer-container,.viewer-footer,.viewer-player{right:0;bottom:0;left:0}.viewer-button,.viewer-canvas,.viewer-container,.viewer-footer,.viewer-list,.viewer-navbar,.viewer-open,.viewer-title,.viewer-toolbar,.viewer-toolbar>li{overflow:hidden}.viewer-close:before,.viewer-flip-horizontal:before,.viewer-flip-vertical:before,.viewer-fullscreen-exit:before,.viewer-fullscreen:before,.viewer-next:before,.viewer-one-to-one:before,.viewer-play:before,.viewer-prev:before,.viewer-reset:before,.viewer-rotate-left:before,.viewer-rotate-right:before,.viewer-zoom-in:before,.viewer-zoom-out:before{font-size:0;line-height:0;display:block;width:20px;height:20px;color:transparent;background-image:url(data:image/png;base64,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);background-repeat:no-repeat}.viewer-zoom-in:before{content:'Zoom 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0}.viewer-toolbar>li{float:left;width:24px;height:24px;cursor:pointer;border-radius:50%;background-color:#000;background-color:rgba(0,0,0,.5)}.viewer-toolbar>li:hover{background-color:#000;background-color:rgba(0,0,0,.8)}.viewer-toolbar>li:before{margin:2px}.viewer-toolbar>li+li{margin-left:1px}.viewer-toolbar>.viewer-play{width:30px;height:30px;margin-top:-3px;margin-bottom:-3px}.viewer-toolbar>.viewer-play:before{margin:5px}.viewer-tooltip{font-size:12px;line-height:20px;top:50%;left:50%;width:50px;height:20px;margin-top:-10px;margin-left:-25px;text-align:center;color:#fff;border-radius:10px;background-color:#000;background-color:rgba(0,0,0,.8)}.viewer-title{font-size:12px;line-height:1;display:inline-block;max-width:90%;margin:0 5% 5px;white-space:nowrap;text-overflow:ellipsis;opacity:.8;color:#ccc;filter:alpha(opacity=80)}.viewer-title:hover{opacity:1;filter:alpha(opacity=100)}.viewer-button{position:absolute;top:-40px;right:-40px;width:80px;height:80px;cursor:pointer;border-radius:50%;background-color:#000;background-color:rgba(0,0,0,.5)}.viewer-button:before{position:absolute;bottom:15px;left:15px}.viewer-fixed{position:fixed}.viewer-show{display:block}.viewer-hide{display:none}.viewer-invisible{visibility:hidden}.viewer-move{cursor:move;cursor:-webkit-grab;cursor:-moz-grab;cursor:grab}.viewer-fade{opacity:0;filter:alpha(opacity=0)}.viewer-in{opacity:1;filter:alpha(opacity=100)}.viewer-transition{-webkit-transition:all .3s ease-out;-o-transition:all .3s ease-out;transition:all .3s ease-out}@media(max-width:767px){.viewer-hide-xs-down{display:none}}@media(max-width:991px){.viewer-hide-sm-down{display:none}}@media(max-width:1199px){.viewer-hide-md-down{display:none}}

viewer.min.js

/*!
 * Viewer.js v0.3.1
 * https://github.com/fengyuanchen/viewerjs
 *
 * Copyright (c) 2015-2016 Fengyuan Chen
 * Released under the MIT license
 *
 * Date: 2016-02-02T11:35:52.542Z
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a=Ve(e*e+t*t),o=Ve(i*i+n*n);return(o-a)/a}(Se(t.startX-t.startX2),Se(t.startY-t.startY2),Se(t.endX-t.endX2),Se(t.endY-t.endY2)),!1,e),t.startX2=t.endX2,t.startY2=t.endY2;break;case"switch":t.action="switched",Se(i)>Se(n)&&(i>1?t.prev():-1>i&&t.next())}t.startX=t.endX,t.startY=t.endY},isSwitchable:function(){var e=this,t=e.imageData,i=e.viewerData;return t.left>=0&&t.top>=0&&t.width<=i.width&&t.height<=i.height}},O.DEFAULTS={inline:!1,button:!0,navbar:!0,title:!0,toolbar:!0,tooltip:!0,movable:!0,zoomable:!0,rotatable:!0,scalable:!0,transition:!0,fullscreen:!0,keyboard:!0,interval:5e3,minWidth:200,minHeight:100,zoomRatio:.1,minZoomRatio:.01,maxZoomRatio:100,zIndex:2015,zIndexInline:0,url:"src",build:null,built:null,show:null,shown:null,hide:null,hidden:null,view:null,viewed:null},O.TEMPLATE='<div class="viewer-container"><div class="viewer-canvas"></div><div class="viewer-footer"><div class="viewer-title"></div><ul class="viewer-toolbar"><li class="viewer-zoom-in" 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;returnO.noConflict=function(){return e.Viewer=Re,O},O.setDefaults=function(e){h(O.DEFAULTS,e)},"function"==typeof define&&define.amd&&define("viewer",[],function(){returnO}),t||(e.Viewer=O),O});```

标签： javascript 前端 jquery

本文转载自: https://blog.csdn.net/xingmei_ok/article/details/127556464
版权归原作者 五月呀 所有，如有侵权，请联系我们删除。

强大的图片预览组件Viewer.js

1、 Viewer.js简介

2、Viewer.js支持的功能

3、Viewer.js的API

4 使用方法

4.1 引入方式

4.2 简单demo

5.viewer.js源码，js版本

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