element-plus中el-upload组件限制上传文件类型

 Element Plus 中，el-upload 组件可以通过设置 accept 属性来限制上传文件的格式

1.限制上传图片文件

<el-upload
  accept="image/*"
  action="/upload"
  :on-success="handleSuccess"
>
  <el-button slot="trigger" size="small" type="primary">点击上传</el-button>
</el-upload>

2.限制上传 Excel 文件

<el-upload
  accept=".xls,.xlsx"
  action="/upload"
  :on-success="handleSuccess"
>
  <el-button slot="trigger" size="small" type="primary">点击上传</el-button>
</el-upload>