基于element ui的图片预览插件
写插件很简单,满足两个条件即可,一、基本的逻辑思路,二、熟悉插件语法要求。本次Vue插件也比较简单,点击“查看图片”用轮播的方式限制用户上传的图片,如图:
项目采用的是vue-element-admin
在‘src/components’下新建‘imgPreview’文件夹,然后在该文件夹下新建‘ImgPreview.vue’,‘index.js’两个文件,代码如下:
ImgPreivew.vue
<template> <el-dialog :visible.sync="isShowImageDialog" @closed="clearImg" > <el-carousel indicator-position="outside" height="600px"> <el-carousel-item v-for="src in imgs"> <img :src="src" style="max-width: 100%;max-height: 100%;display: block; margin: 0 auto;"/> </el-carousel-item> </el-carousel> </el-dialog> </template> <script> export default { name: 'ImgPreview', data() { return { imgs: '', isShowImageDialog: false } }, methods: { clearImg() { this.imgs = null } } } </script> <style scoped> </style>
index.js
import ImgPreviewComponent from './ImgPreview' const ImgPreview = {} ImgPreview.install = Vue => { const ImgConstructor = Vue.extend(ImgPreviewComponent) const instance = new ImgConstructor() instance.$mount(document.createElement('div')) document.body.appendChild(instance.$el) Vue.prototype.$imgPreview = (e) => { instance.target = e.currentTarget instance.imgs = instance.target.getAttribute('data-img').split(',') instance.isShowImageDialog = true } } export default ImgPreview
应用也很简单:
main.js
import imgPreview from '@/components/imgPreview' Vue.use(imgPreview)
comments.vue页面调用
<el-table-column label="评论内容" header-align="center" > <template slot-scope="scope"> <div v-html="scope.row.content"></div> <el-button v-if="scope.row.images.length>0" :data-img="scope.row.images" type="text" size="small" @click="$imgPreview">查看图片</el-button> </template> </el-table-column>
整个插件原理也很简单:所有的数据都放在data-img上,插件获取其中的数据,然后通过element ui的el-carousel组件轮播显示
原文地址:http://www.ftc20.com/wordpress/2019/04/base-element-ui-plugin/