前端下载excel

   handleDownload() {
      this.downloadLoading = true
      import('@/utils/excel').then((excel) => {
        const tHeader = ['产品', '设备编码', '设备名称', '设备状态', '最近在线时间', '离线时长', '数据上报频率']
        const filterVal = ['productName', 'deviceNo', 'deviceName', 'deviceDataStatus', 'reportLatelyTime', 'offlineDuration', 'reportRate']
        const list = this.list
        const data = this.formatJson(filterVal, list)
        excel.export_json_to_excel({
          header: tHeader,
          data,
          filename: this.filename,
          autoWidth: this.autoWidth,
          bookType: this.bookType,
        })
        this.downloadLoading = false
      })
    },