Express.jsを使ったREST APIの作成

This tutorial explains how to build a basic REST API using Express.js, a Node.js framework. It begins by setting up the environment, requiring Node.js installation and creating a new project using npm. Express.js is then installed as a dependency. A basic Express server is created, handling a welcome message at the root endpoint. The core of the tutorial focuses on building CRUD (Create, Read, Update, Delete) endpoints for managing user data in an in-memory array. These endpoints demonstrate how to retrieve, add, modify, and delete users using HTTP methods (GET, POST, PUT, DELETE). The functionality is tested using curl commands. The tutorial concludes by mentioning that future content will cover database integration. The provided links are presumably related to further resources or examples. The example uses simple in-memory storage; a production system would require a persistent database.