Using data from Excel Web with JavaScript; explanations from the new Excel Mashup site The desktop Office apps have been connecting to Office servers for years now, from the original Project ...

Learn how to use JavaScript’s fs library module to create, read, write, and stream common file types in the JavaScript runtimes Node, Deno, and Bun.

How to Read an XLS File Without Excel. XLS files are spreadsheet files created by Microsoft Office Excel. An Excel spreadsheet can contain anything from images and plain text to graphs and tables ...

Do you need to perform an Ajax file upload with pure JavaScript? This example lays out the steps to accomplish an Ajax file upload without the need for a JavaScript library like jQuery or Dojo.

In this quick tutorial, I’ll show you how to upload a file from a web browser, with a Node.js file upload handler on the server-side, and a pure, Ajax based JavaScript process on the client side. Step ...