viewerjs+vue3 using typescript
安装包：
npm install v-viewer viewerjs
npm i fontawesome-4.7
npm install @fortawesome/fontawesome-svg-core
npm install @fortawesome/free-solid-svg-icons
npm install @fortawesome/vue-fontawesome@prerelease
npm install @fortawesome/free-regular-svg-icons
npm install @fortawesome/free-brands-svg-icons
npm install viewerjs @types/viewerjs --savemain.ts
/** @creater: geovindu* @since: 2025-06-24 20:03:42* @LastAuthor: geovindu* @lastTime: 2025-10-31 22:06:13* @文件相对于项目的路径: \jsstudy\markmapdemo\src\main.ts* @message: geovindu* @IDE: vscode* @Development: node.js 20, vuejs3.0* @package: * @ISO: windows10* @database: mysql 8.0 sql server 2019 postgresSQL 16 * Copyright (c) 2025 by geovindu email:geovindu@163.com, All Rights Reserved.*/
import './assets/main.css'import { createApp } from 'vue'
import { createPinia } from 'pinia'import App from './App.vue'
import router from './router'
import Viewer from 'viewerjs';
import "fontawesome-4.7/css/font-awesome.css";
import { library } from '@fortawesome/fontawesome-svg-core';
import { faUserSecret } from '@fortawesome/free-solid-svg-icons';
import { FontAwesomeIcon } from '@fortawesome/vue-fontawesome';import 'viewerjs/dist/viewer.css';
Viewer.setDefaults({navbar: true,title: true,toolbar: {prev: true,next: true,},
});const app = createApp(App)
.component('font-awesome-icon', FontAwesomeIcon)
app.use(createPinia())
app.use(router)
app.use(() => Viewer);
app.mount('#app')
<template><div class="about"><h1>This is an about page</h1></div>
<!-- 图片容器 -->
<div ref="viewerContainer" style="margin: 20px;"><imgv-for="src in images":key="src":src="getThumbnail(src)":data-src="src":alt="extractFilename(src)"class="viewer-image"/></div></template>
<script setup lang="ts">
import { ref, onMounted, onUnmounted } from 'vue';
import Viewer from 'viewerjs';
import 'viewerjs/dist/viewer.css';// 🔹 定义类型
type ImageSrc = string;// 🔹 图片列表（类型化）
const images = ref<ImageSrc[]>(['1.png','2.jpg','3.jpg',
]);// 🔹 提取文件名（带类型）
const extractFilename = (url: string): string => {try {const pathname = new URL(url, location.origin).pathname;const filename = pathname.split('/').pop() || 'image';return filename.split('?')[0].split('#')[0]; // 去除查询参数} catch (e) {const match = url.match(/[^/\\?#]+(?=[^/\\]*$)/);return match ? match[0] : 'image';}
};// 🔹 缩略图生成函数
const getThumbnail = (url: string): string => {if (url.includes('picsum.photos')) {return url.replace(/(\d+)\/(\d+)/, '200/150');}return url;
};// 🔹 Viewer 容器引用
const viewerContainer = ref<HTMLDivElement | null>(null);
let viewer: Viewer | null = null;// 🔹 下载处理函数
const handleDownload = (): void => {if (!viewer || !viewer.image) return;const currentImage = viewer.image;const filename = extractFilename(currentImage.src);const tempImage = new Image();tempImage.crossOrigin = 'Anonymous';tempImage.onload = () => {const canvas = document.createElement('canvas');canvas.width = tempImage.width;canvas.height = tempImage.height;const ctx = canvas.getContext('2d');if (!ctx) return;ctx.drawImage(tempImage, 0, 0);const ext = filename.split('.').pop()?.toLowerCase() || 'jpeg';const mimeTypeMap: Record<string, string> = {jpg: 'image/jpeg',jpeg: 'image/jpeg',png: 'image/png',gif: 'image/gif',webp: 'image/webp',bmp: 'image/bmp',};const mimeType = mimeTypeMap[ext] || 'image/jpeg';const dataUrl = canvas.toDataURL(mimeType, 0.95);const a = document.createElement('a');a.href = dataUrl;a.download = filename;document.body.appendChild(a);a.click();document.body.removeChild(a);};tempImage.onerror = () => {const a = document.createElement('a');a.href = currentImage.src;a.download = filename;a.target = '_blank';a.rel = 'noopener noreferrer';document.body.appendChild(a);a.click();document.body.removeChild(a);};tempImage.src = currentImage.src;
};// 🔹 组件生命周期
onMounted(() => {if (viewerContainer.value) {viewer = new Viewer(viewerContainer.value, {url: 'data-src',toolbar: {zoomIn: true,zoomOut: true,oneToOne: true,reset: true,prev: true,next: true,download: {show: true,//size: 'large',click() {handleDownload();},},},navbar: true,title: (image: HTMLImageElement) => extractFilename(image.src),viewed() {console.log('查看:', extractFilename(viewer?.image.src || ''));},});}
});onUnmounted(() => {if (viewer) {viewer.destroy();viewer = null;}
});
</script>
<style>
@media (min-width: 1024px) {.about {min-height: 100vh;display: flex;align-items: center;}
}
</style>
下载，是以图片的名字一样的下载方式
输出：
