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The node-xlsx package is a powerful tool for parsing and writing Excel files in Node.js. It allows you to read data from Excel files, manipulate it, and write it back to new Excel files. This package supports both .xlsx and .xls formats.
Reading Excel Files
This feature allows you to read data from an Excel file. The `parse` method reads the file and returns an array of worksheets, each containing an array of rows and columns.
const xlsx = require('node-xlsx');
const workSheetsFromFile = xlsx.parse(`${__dirname}/myFile.xlsx`);
console.log(workSheetsFromFile);
Writing Excel Files
This feature allows you to write data to an Excel file. The `build` method creates a buffer from the data, which can then be written to a file using Node's `fs` module.
const xlsx = require('node-xlsx');
const data = [[1, 2, 3], [4, 5, 6]];
const buffer = xlsx.build([{name: 'mySheetName', data: data}]);
require('fs').writeFileSync('myFile.xlsx', buffer);
Manipulating Excel Data
This feature allows you to manipulate data within an Excel file. You can read the file, modify the data, and then write the updated data back to a new file.
const xlsx = require('node-xlsx');
const workSheetsFromFile = xlsx.parse(`${__dirname}/myFile.xlsx`);
workSheetsFromFile[0].data[0][0] = 'New Value';
const buffer = xlsx.build(workSheetsFromFile);
require('fs').writeFileSync('myFile.xlsx', buffer);
The xlsx package is another popular library for reading and writing Excel files in Node.js. It offers a wide range of features and is known for its performance and reliability. Compared to node-xlsx, it has a more extensive API and better documentation.
The exceljs package provides a comprehensive set of features for working with Excel files, including support for styling, formatting, and creating complex worksheets. It is more feature-rich compared to node-xlsx, especially in terms of formatting and styling capabilities.
The sheetjs package, also known as js-xlsx, is a highly versatile library for parsing and writing spreadsheet files. It supports a wide range of formats and offers extensive functionality for data manipulation. It is comparable to node-xlsx but offers more flexibility and support for different file formats.
Excel file parser/builder that relies on js-xlsx.
import xlsx from 'node-xlsx';
// Or var xlsx = require('node-xlsx').default;
// Parse a buffer
const workSheetsFromBuffer = xlsx.parse(fs.readFileSync(`${__dirname}/myFile.xlsx`));
// Parse a file
const workSheetsFromFile = xlsx.parse(`${__dirname}/myFile.xlsx`);
import xlsx from 'node-xlsx';
// Or var xlsx = require('node-xlsx').default;
const data = [[1, 2, 3], [true, false, null, 'sheetjs'], ['foo', 'bar', new Date('2014-02-19T14:30Z'), '0.3'], ['baz', null, 'qux']];
var buffer = xlsx.build([{name: "mySheetName", data: data}]); // Returns a buffer
A1:A4
)import xlsx from 'node-xlsx';
// Or var xlsx = require('node-xlsx').default;
const data = [[1, 2, 3], [true, false, null, 'sheetjs'], ['foo', 'bar', new Date('2014-02-19T14:30Z'), '0.3'], ['baz', null, 'qux']];
const range = {s: {c: 0, r:0 }, e: {c:0, r:3}}; // A1:A4
const option = {'!merges': [ range ]};
var buffer = xlsx.build([{name: "mySheetName", data: data}], option); // Returns a buffer
This library requires at lease nodeJS v4. For legacy versions, you can use this workaround before using the lib.
npm i --save object-assign
Object.prototype.assign = require('object-assign');
Please submit all pull requests the against master branch. If your unit test contains javascript patches or features, you should include relevant unit tests. Thanks!
Script | Description |
---|---|
start | Alias of test:watch |
test | Run mocha unit tests |
test:watch | Run and watch mocha unit tests |
lint | Run eslint static tests |
compile | Compile the library |
compile:watch | Compile and watch the library |
Olivier Louvignes
Copyright (C) 2012-2014 Olivier Louvignes
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Except where noted, this license applies to any and all software programs and associated documentation files created by the Original Author and distributed with the Software:
Inspired by SheetJS gist examples, Copyright (c) SheetJS.
FAQs
NodeJS Excel files parser & builder
The npm package node-xlsx receives a total of 237,408 weekly downloads. As such, node-xlsx popularity was classified as popular.
We found that node-xlsx demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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