4dkankan-components/docs/examples-bk/upload/basic.vue

<template>
    <el-upload
        v-model:file-list="fileList"
        class="upload-demo"
        action="https://run.mocky.io/v3/9d059bf9-4660-45f2-925d-ce80ad6c4d15"
        multiple
        :on-preview="handlePreview"
        :on-remove="handleRemove"
        :before-remove="beforeRemove"
        :limit="3"
        :on-exceed="handleExceed"
    >
        <el-button type="primary">Click to upload</el-button>
        <template #tip>
            <div class="el-upload__tip">jpg/png files with a size less than 500KB.</div>
        </template>
    </el-upload>
</template>
<script lang="ts" setup>
import { ref } from 'vue'
import { ElMessage, ElMessageBox } from 'element-plus'

import type { UploadProps, UploadUserFile } from 'element-plus'

const fileList = ref<UploadUserFile[]>([
    {
        name: 'element-plus-logo.svg',
        url: 'https://element-plus.org/images/element-plus-logo.svg',
    },
    {
        name: 'element-plus-logo2.svg',
        url: 'https://element-plus.org/images/element-plus-logo.svg',
    },
])

const handleRemove: UploadProps['onRemove'] = (file, uploadFiles) => {
    console.log(file, uploadFiles)
}

const handlePreview: UploadProps['onPreview'] = uploadFile => {
    console.log(uploadFile)
}

const handleExceed: UploadProps['onExceed'] = (files, uploadFiles) => {
    ElMessage.warning(`The limit is 3, you selected ${files.length} files this time, add up to ${files.length + uploadFiles.length} totally`)
}

const beforeRemove: UploadProps['beforeRemove'] = (uploadFile, uploadFiles) => {
    return ElMessageBox.confirm(`Cancel the transfert of ${uploadFile.name} ?`).then(
        () => true,
        () => false
    )
}
</script>