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.

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 ...

How to open a JSON file in Windows 11/10 A JSON file is a file that keeps basic data configurations and objects in JavaScript Object Notation (JSON) format, which is a universal data interchange ...

What are JSON, XML, and YAML? Text-file formats that can be used to store structured data that can be handy for embedded and Web applications. Most developers will be familiar with XML (Extensible ...

The ECMAScript 2025 specification, now final, standardizes new JavaScript capabilities including JSON modules, regex capabilities, Set methods, and sync iterator helper methods.