The server-side resource is passed the FormData which contains the file In this example that server-side resource is named upload.php When notified that the JavaScript file upload was successful, send ...

What is JSON (JavaScript Object Notation)? JSON (JavaScript Object Notation) is a text-based, human-readable data interchange format used to exchange data between web clients and web servers. The ...

For example, YAML uses indentation for hierarchy, forgoing the braces. Although YML is sometimes used as a data exchange format, its biggest use case is in configuration files.