[英]Writing to a new excel sheet in the same file without deleting previous data (nodeJS)
[英]How can I separate data to new sheet in same excel file
如果我在array2D中有数据,我想将每个设备分开到excel文件中的每个工作表。 从我下面的代码这里我需要更改exportToCSV()来解决这个问题。
const rows = [
["DeviceA"]
["Date/Time", "smokeSensor", "fireSensor"],
["190501 00:01", "200", "700"],
["190501 00:02", "300", "750"],
["190502 00:01", "20", "780"],
["190502 00:02", "30", "630"],
[""],
["DeviceB"],
["Date/Time", "smokeSensor", "fireSensor"],
["190501 00:01", "100", "600"],
["190501 00:02", "110", "522"],
["190502 00:01", "120", ""],
["190502 00:02", "130", ""],
];
function exportToCSV(rows) {
let csvContent = ""
rows.forEach(function(rowArray) {
let row = rowArray.join(",")
csvContent += row + "\r\n"
});
var link = document.createElement("a")
document.body.appendChild(link)
// var blob = new Blob([csvContent], {type: "text/csv"});
var blob = new Blob([csvContent], {type: "xls/xlsx"})
var url = window.URL.createObjectURL(blob)
link.setAttribute("href", url)
link.setAttribute("download", "my_data.csv")
link.click() /* Download the data file named "my_data.csv". */
}
CSV不支持在工作表中分离数据。
我创建了一个名为ExcellentExport的JavaScript库,用于将表或数组导出为CSV或Excel。
excel导出支持工作表:
ExcellentExport.convert({ anchor: this, filename: 'data_123.array', format: 'xlsx'}, [
{name: 'Sheet Name Here 1', from: {array: yourArray1}},
{name: 'Sheet 2', from: {array: yourArray2}},
]);
对于CSV解析,您可以使用Papa Parse。 您可以将CSV解析为JSON并执行操作,您可以再次从JSON解析为CSV
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