RARahul Agarwalinrahulagarwal.hashnode.dev·Jul 16 · 27 min readReact Interview Guide─── JAVASCRIPT & FOUNDATIONS ─── Q1: Object Reference Puzzle (Output-Based) Question: What is the output of the following code and why? const obj = { test: "Priyansh" }; const obj2 = obj; obj2.test = 00
RARahul Agarwalinrahulagarwal.hashnode.dev·Jul 11 · 6 min readThe Complete Guide to Cookies & Sessions in Node.jsBy default, the internet is stateless. Every HTTP request is an amnesiac—it has absolutely no memory of previous requests. If you log in on one page and click a link to go to another, the server has a00
RARahul Agarwalinrahulagarwal.hashnode.dev·Jul 4 · 6 min readBuilding a Full-Stack MERN Todo AppBuilding a Todo application is a rite of passage for full-stack developers. But why stop at a basic list when you can build a seamless, real-time experience? In this guide, we will break down a full-s00
RARahul Agarwalinrahulagarwal.hashnode.dev·Jul 3 · 12 min readThe Complete Backend Development Module Revision GuideModule 1: The Core Express Engine We built a local server using Node.js and Express. We learned that the server listens on a specific network entry point called a Port. Key Concept: Requests come fro00
RARahul Agarwalinrahulagarwal.hashnode.dev·Jul 2 · 6 min readModule 1 Practice Track: The HTTP PipelineThe Sandbox Tier: Raw Request-Response Mapping Instead of writing a full app, let's practice how a client (browser/Postman) sends structural instructions to a server. An HTTP transaction is just stru00
