Node2Know — Express Response Basics

A minimal Express app demonstrating two core response methods:

• res.send() — the generalist (HTML, text, etc.)
• res.json() — the specialist (APIs)

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✅ Prereqs

• Node.js
• npm

Check:

node -v
npm -v

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📦 Install

npm install

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▶️ Run

npm start

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🧪 Try it

1) res.send() (HTML)

Open:

• http://localhost:3000/

You’ll get an HTML response (and your browser will render it).

2) res.json() (API response)

Open:

• http://localhost:3000/data

You’ll get JSON:

{ "status": "loaded", "cargo": ["box1", "box2"] }

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👀 Watch mode

npm run watch

Stop with:

• Ctrl + C

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🧠 Key idea

res.send()

• flexible: can send HTML, text, buffers, etc.
• Express will infer a Content-Type (often text/html for strings)

res.json()

• preferred for APIs
• sets Content-Type: application/json
• stringifies objects automatically

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📁 Project Structure

.
├── app.js
├── package.json
└── README.md

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Repo

• https://github.com/ProfessorSolo/Node2Know-ExpressResponseBasics.git

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License

Node2Know-LEARN-1.0