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Day 38 of Learning MERN Stack

Ali Hamza 2026年06月17日 17:54 3 次阅读 来源:Dev.to

Hello Dev Community! 👋 It is officially Day 38 of my unbroken streak toward mastering the MERN stack! Yesterday, I learned how to extract query strings from the URL bar. Today, I took a massive step forward into full-stack backend architecture by diving into Prashant Sir's (Complete Coding) roadmap to master HTTP Request Methods . Up until now, our server treated every incoming request the same way. Today, I learned how to make the backend execute completely different actions based on the "intent" (HTTP Verb) of the user! 🧠 Key Learnings From Node.js Lecture 6 (HTTP Verbs) An endpoint is no longer static when you map request methods against it. Here is the technical breakdown of what I locked down today: 1. Cracking req.method I discovered that the incoming Request object holds a crucial property called req.method . This tells the server exactly what action the client wants to perform. 2. The Big Four Core Methods GET: Used when the user simply wants to read or fetch data from the server (e.g., viewing a product page). POST: Used when the user wants to securely send or create new data on the server (e.g., submitting a signup form). PUT/PATCH: Used to update existing data records. DELETE: Used to wipe a specific data entry from the server storage. javascript const http = require("http"); const server = http.createServer((req, res) => { if (req.url === "/api/data") { if (req.method === "GET") { res.writeHead(200, { "Content-Type": "text/plain" }); res.end("Fetching and reading secure database records..."); } else if (req.method === "POST") { res.writeHead(201, { "Content-Type": "text/plain" }); res.end("Securely creating and injecting new data into the server!"); } } else { res.end("Standard Route"); } }); server.listen(8000);

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