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  1. medium.com › @me › working-with-xlsx-files-in-javascript-aWorking with XLSX files in JavaScript: A Beginner’s Guide

    23 Ιαν 2023 · XLSX is a popular file format used for storing and exchanging spreadsheet data. It is an extension of the older XLS file format, and is widely used in businesses, organizations, and...

  2. stackoverflow.com › questions › 57111392javascript - Download excel cannot open the file because the file...

    19 Ιουλ 2019 · I'm trying to download an xlsx file with reactJS but i'm receiving this message when i try to open my file after download: "Excel can not open file 'file.xlsx' because the file format or file extension is not valid.

  3. zetcode.com › javascript › exceljsExcelJS - read/write Excel files in JavaScript with exceljs -...

    18 Οκτ 2023 · In this article we show how to work with Excel files in JavaScript with ExcelJS library. ExcelJS is a JavaScript library for reading, manipulating and writing spreadsheet data in XLSX format. $ npm i exceljs. We install ExcelJS with npm i exceljs command. Excel xlsx. In this article we work with xlsx files.

  4. betterprogramming.pub › how-to-validate-an-excel-file-in-javascript-a10fa12c171cHow To Validate an Excel File in JavaScript - Better Programming

    23 Απρ 2021 · In this example, I showed how to validate a file in .xlsx format in a simple way. It is a solution that can be improved a lot, but the objective was to show how easy it can be to validate an Excel-formatted file.

  5. learn.microsoft.com › en-us › officeWork with worksheets using the Excel JavaScript API

    This article provides code samples that show how to perform common tasks with worksheets using the Excel JavaScript API. For the complete list of properties and methods that the Worksheet and WorksheetCollection objects support, see Worksheet Object (JavaScript API for Excel) and WorksheetCollection Object (JavaScript API for Excel). Note.

  6. learn.microsoft.com › en-us › officeWork with workbooks using the Excel JavaScript API

    26 Μαρ 2024 · This article provides code samples that show how to perform common tasks with workbooks using the Excel JavaScript API. For the complete list of properties and methods that the Workbook object supports, see Workbook Object (JavaScript API for Excel) .

  7. learn.microsoft.com › en-us › officeExcel JavaScript object model in Office Add-ins - Office Add-ins

    21 Μαρ 2023 · Learn the key object types in the Excel JavaScript APIs and how to use them to build add-ins for Excel.