YOU Become the API Provider

Coming Soon

1080p • 60FPS

Yesterday you called APIs. Today you CREATE them. We build an Express.js server to handle high scores.

Resources

Phase 1: Intel

Mission Briefing

⏱️ Before You Watch (5 mins)

Today's Secret: Until now, you've been a consumer of APIs (ordering food). Today, you become the chef (making food). You will build the endpoints that your game talks to.

What you should have ready:

Your running server.js (Backend)
Postman (optional) or just your browser

🧠 Quick Concepts

Term	Simple Meaning
Express.js	A framework to make building APIs easy
Route	A specific URL path (e.g., `/api/scores`)
Endpoint	The place where the API does something
req / res	Request (what came in) / Response (what goes out)

🤔 Think About

Before watching, consider:

What does your game need to send to save a score? (Name + Score).
What does your game need to receive to show the leaderboard? (List of Names + Scores).

🎯 By the End

After this episode, you'll:

✅ Create a GET endpoint (to fetch scores)
✅ Create a POST endpoint (to save scores)
✅ Test your own API!

Order up! You're cooking now! 👨‍🍳

Phase 3: Debrief

Mission Report

📝 What We Learned

Express.js: Makes creating a server as easy as 5 lines of code.
GET /scores: A route that returns the list of high scores.
POST /scores: A route that accepts a new score and adds it to the list.
app.listen: Tells the server to start listening for requests.

🔗 Key Code Snippet

const express = require('express');
const app = express();

// The "Chef" serving the list of scores
app.get('/scores', (req, res) => {
  res.json([{ name: "Divyanshu", score: 100 }]);
});

app.listen(3000);