插件：https://github.com/SheetJS/sheetjs

修改处：json导出表格时会把所有字段都导出，如果自定义的header不全，也会导出，修改完就不导出多余的了。h[d=h.length]=t  改为  return true ，就是xlsx.js里的sheet_add_json函数里的 hdr[C=hdr.length] = k

用处：这个插件其实还可以从数组导出、从页面里的table中导出

demo：

<script src="/static/js/sheetjs/xlsx.core.min.js"></script>

http.post('/admin/Order/getOrderList',{page: 0, search:that.search},function (res) {
    let rows=res.data.rows;
    // 定义标题字段及顺序
    const header = ["id", "order_num","nickname","kindname","total_coins","due_time","pay_status_str","create_time"];
    // 定义标题字段显示名称
    const headerStr=["id","订单号","昵称","类别","积分","有效期止","付款状态","创建时间"];
    let headerDisplay={};
    headerStr.forEach(function(value,index){
        headerDisplay[header[index]]=value;
    });
    // const headerDisplay = {id:"id", order_num:"订单号", nickname:"昵称", kindname:"类别", total_coins:"积分", due_time:"有效期止", pay_status_str:"付款状态",create_time:"创建时间"};

    const newData = [headerDisplay, ...rows];
    const worksheet = XLSX.utils.json_to_sheet(newData, {header:header, skipHeader:true});
    var workbook = XLSX.utils.book_new();
    XLSX.utils.book_append_sheet(workbook, worksheet, "sheet1");
    XLSX.writeFile(workbook, "订单列表.xlsx");
    that.loading.table=false;
})