element-plus/packages/upload/doc/basic.vue

<template>
  <el-upload
    class="upload-demo"
    action="https://jsonplaceholder.typicode.com/posts/"
    :on-preview="handlePreview"
    :on-remove="handleRemove"
    :before-remove="beforeRemove"
    :multiple="multiple"
    :limit="3"
    :on-exceed="handleExceed"
    :file-list="fileList"
  >
    <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)
    },
    handleExceed(files, fileList) {
      this.$message.warning(`The limit is 3, you selected ${files.length} files this time, add up to ${files.length + fileList.length} totally`)
    },
    beforeRemove(file, fileList) {
      console.log(`Cancel the transfert of ${ file.name } ?`)
      console.log(fileList)
    },
  },
}
</script>