AVUE实现前端导出Excel

//导出
exportExcel() {
  this.$export.excel({
    title: "商户pos机",
    columns: [
      { label: "pos机编号", prop: "trm_id" },
      { label: "市场经营房号", prop: "stall_no" },
      { label: "商户名称", prop: "merchant_name" },
      { label: "绑定时间", prop: "update_time" }
    ],
    data: this.tableData
  });
},