Mastering Express.js: A Deep Dive

Express.js is a widely-used web server application framework for Node.js that enables developers to focus on writing business logic by encapsulating APIs with established processes and standards. The core features include efficient middleware configuration, dynamic HTML rendering, and HTTP request handling. This post walks through implementing middleware registration, route handling, and the next mechanism in a simple LikeExpress class. Leapcell is introduced as a next-gen serverless platform ideal for deploying Express projects with multi-language support and cost-efficient scaling.