Ajax File Upload
Ajax File Upload is a web development technique that allows files to be uploaded from a client to a server asynchronously without requiring a full page reload. It leverages JavaScript (typically with XMLHttpRequest or Fetch API) to send file data in the background, often using FormData objects to handle multipart/form-data encoding. This provides a smoother user experience by enabling progress tracking, immediate feedback, and dynamic UI updates during the upload process.
Developers should use Ajax File Upload when building modern web applications that require seamless file uploads, such as in social media platforms for images/videos, document management systems, or cloud storage services. It's essential for improving user interaction by avoiding disruptive page refreshes, supporting large file uploads with progress indicators, and enabling real-time validation or previews of uploaded content.