GET route handling in Express - Mini Project: Build & Apply

Express GET Route Handling

📖 Scenario: You are building a simple web server that responds to user requests. You want to create a route that listens for GET requests on a specific path and sends back a friendly message.

🎯 Goal: Create an Express server with a GET route at /hello that responds with the text Hello, Express!.

📋 What You'll Learn

Create an Express app instance called app

Set up a GET route on /hello

Send the response Hello, Express! when the route is accessed

Listen on port 3000

💡 Why This Matters

🌍 Real World

Web servers often need to respond to user requests on different paths. GET routes are the most common way to serve pages or data.

💼 Career

Understanding how to handle GET routes in Express is essential for backend web development jobs using Node.js.

1

Set up Express app

Write code to import Express and create an app instance called app.

Express

# Import express and create app instance
# Your code here

Need a hint?

Use require('express') to import Express and then call it to create app.

2

Create GET route

Add a GET route on /hello using app.get that takes req and res as parameters.

Express

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

// Add GET route for /hello
# Your code here

Need a hint?

Use app.get('/hello', (req, res) => { ... }) to create the route.

3

Send response text

Inside the GET route callback, use res.send to send the text Hello, Express!.

Express

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

app.get('/hello', (req, res) => {
    // Send response text
    # Your code here
});

Need a hint?

Use res.send('Hello, Express!') inside the route callback.

4

Start server on port 3000

Add code to make the app listen on port 3000 using app.listen.

Express

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

app.get('/hello', (req, res) => {
    res.send('Hello, Express!');
});

// Start server on port 3000
# Your code here

Need a hint?

Use app.listen(3000) to start the server on port 3000.