[Vue]el-upload 上傳CSV檔案範例

<el-upload class="upload-excel"
            ref="upload"
            action="string"
            accept=".csv"
            :limit="1"
            :http-request="submitFile"
            :file-list="fileList"
        >
          <el-button>上傳檔案</el-button>
</el-upload>
<!-- accept可換成其他檔案類型 -->

let fileList = ref([]) 
function submitFile(fileObj) {
      let formData = new FormData();
      formData.set("file", fileObj.file)
      axios.post('/link', formData, {
        headers: {
          'Content-Type': 'multipart/form-data'
        },
      })
}
 return{
    fileList,
    submitFile
  }