在NodeJS中将两个数组合并为一个

时间:2018-01-17 08:11:36

标签: arrays node.js exceljs

我想用ExcelJS创建包含2个数据数组的Excel文件。

我可以创建Excel文件:

var Excel = require('exceljs');
var workbook = new Excel.Workbook();
var sheet = workbook.addWorksheet('My Sheet', {properties:{tabColor:{argb:'FFC0000'}}});

我可以添加列标题:

sheet.columns = [{key:"date", header:"Date"}, {key: "quantity", header: "Quantity"}]

我为这些列添加了2个数组:

array_date = [2018-01-04, 2018-01-06, 2018-01-08, 2018-01-09]
array_quantity = [25, 32, 54, 48]

我想将这两个数组合并为一个这样的数组:

var merged = [{date:"2018-01-04", quantity:25} 
          , {date:"2018-01-06", quantity:32}  
          , {date:"2018-01-08", quantity:42} 
          , {date:"2018-01-09", quantity:48}];

如果我可以合并,我可以为每个数据添加行:

for(i in merged){
  sheet.addRow(merged[i]);
}

然后我可以创建Excel文件:

workbook.xlsx.writeFile("some.xlsx").then(function() {
console.log("xls file is written.");
});

如何将两个数组合并为一个如果订购它们?另外,我想知道这是在NodeJS中创建excel文件的最佳方法吗?

2 个答案:

答案 0 :(得分:5)

您可以使用

创建新数组
var array_date = ["2018-01-04", "2018-01-06", "2018-01-08", "2018-01-09"];
var array_quantity = [25, 32, 54, 48];

var merged = array_date.map((date, i) => ({
    date,
    quantity: array_quantity[i],
}));

答案 1 :(得分:1)

array_date = [2018-01-04, 2018-01-06, 2018-01-08, 2018-01-09]
array_quantity = [25, 32, 54, 48]

var merged=[];

for(var i=0;i<array_date.length;i++){
  merged.push({date:array_date[i], quantity:array_quantity[i]});
}

console.log(merged);