element-plus/docs/examples/upload/file-list-with-thumbnail.vue

<template>
  <el-upload
    class="upload-demo"
    action="https://jsonplaceholder.typicode.com/posts/"
    :on-preview="handlePreview"
    :on-remove="handleRemove"
    :file-list="fileList"
    list-type="picture"
  >
    <el-button size="small" 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">
export default {
  data() {
    return {
      fileList: [
        {
          name: 'food.jpeg',
          url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
        },
        {
          name: 'food2.jpeg',
          url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
        },
      ],
    }
  },
  methods: {
    handleRemove(file, fileList) {
      console.log(file, fileList)
    },
    handlePreview(file) {
      console.log(file)
    },
  },
}
</script>