xlsx date js

XLSX Date JS#

If you are working with XLSX files, you might need to manipulate dates in the file using JavaScript. Here are some ways to achieve that:

Using Moment.js#

Moment.js is a popular library used for working with dates and times in JavaScript. You can use Moment.js to parse dates from XLSX files and manipulate them as needed.

const moment = require('moment');

// Parse date from XLSX
const dateStr = '2021-05-25T00:00:00.000Z';
const date = moment(dateStr).toDate();

// Format date
const formattedDate = moment(date).format('DD/MM/YYYY');

Using Date Object#

You can also use the built-in Date object in JavaScript to work with dates from XLSX files. However, you will need to parse the date string manually using methods like substring or split.

// Parse date from XLSX
const dateStr = '2021-05-25T00:00:00.000Z';
const year = dateStr.substring(0, 4);
const month = dateStr.substring(5, 7);
const day = dateStr.substring(8, 10);
const date = new Date(year, month - 1, day);

// Format date
const formattedDate = `${date.getDate()}/${date.getMonth() + 1}/${date.getFullYear()}`;

Using XLSX.js#

If you are using the XLSX.js library to read XLSX files in your JavaScript code, you can use the XLSX.SSF.parse_date_code method to parse date codes from the file and convert them to JavaScript Date objects.

const XLSX = require('xlsx');

// Parse date from XLSX
const dateCode = 44147; // Example date code from file
const date = XLSX.SSF.parse_date_code(dateCode);

// Format date
const formattedDate = `${date.getDate()}/${date.getMonth() + 1}/${date.getFullYear()}`;

Conclusion#

There are multiple ways to work with dates from XLSX files in JavaScript, depending on your preference and the libraries you are using. Whether you choose to use Moment.js, the Date object, or XLSX.js, make sure to parse the date string correctly and format it as needed for your use case.