『el-upload 上传组件の使用』

1、点击上传

<template>
  <el-upload
    class="upload-demo"
    action="https://jsonplaceholder.typicode.com/posts/"
    :on-preview="handlePreview"
    :on-remove="handleRemove"
    :before-remove="beforeRemove"
    multiple
    :limit="3"
    :on-exceed="handleExceed"
    :file-list="fileList"
  >
    <el-button size="small" type="primary">点击上传</el-button>
    <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
  </el-upload>
</template>

<script>
export default {
  data() {
    return {
      fileList: [
        { name: 'food.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100' }
      ]
    }
  },
  methods: {
    // 移除前的提示
    beforeRemove(file, fileList) {
      console.log('beforeRemove')
      return this.$confirm(`确定移除 ${file.name}？`)
    },
    // 文件列表移除文件时
    handleRemove(file, fileList) {
      console.log('handleRemove', file, fileList)
    },
    // 点击文件列表中已上传的文件
    handlePreview(file) {
      console.log('handlePreview', file)
    },
    // 超出限制的行为
    handleExceed(files, fileList) {
      console.log('handleExceed')
      this.$message.warning(`当前限制选择 3 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`)
    }

  }
}
</script>