Express installation and setup - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import Express in your Node.js file.

Express

const express = require([1]);

Drag options to blanks, or click blank then click option'

A"express"

B"node"

C"http"

D"fs"

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the quotes around the package name.

Using a wrong package name like 'http' or 'fs'.

You need to require the express package by its name as a string to use it in your file.

2fill in blank

medium

Complete the code to create an Express app instance.

Express

const app = [1]();

Drag options to blanks, or click blank then click option'

Aapp

Bhttp

Crequire

Dexpress

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to call 'http()' instead of 'express()'.

Using 'app()' before defining it.

Calling express() creates a new Express application.

3fill in blank

hard

Fix the error in the code to start the server on port 3000.

Express

app.listen([1], () => {
  console.log('Server running on port 3000');
});

Drag options to blanks, or click blank then click option'

A3000

Bapp

C"3000"

Dexpress

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the port as a string instead of a number.

Passing the app or express instead of a port number.

The port number should be a number, not a string, when passed to listen.

4fill in blank

hard

Fill both blanks to create a GET route for the home page that sends 'Hello World!'.

Express

app.[1]('[2]', (req, res) => {
  res.send('Hello World!');
});

Drag options to blanks, or click blank then click option'

Aget

Bpost

C/

D/home

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'post' instead of 'get' for a simple page load.

Using '/home' instead of '/' for the main page.

The get method defines a GET route, and '/' is the root path for the home page.

5fill in blank

hard

Fill all three blanks to import Express, create an app, and start the server on port 5000.

Express

const [1] = require('[2]');
const app = [3]();
app.listen(5000, () => {
  console.log('Server started on port 5000');
});

Drag options to blanks, or click blank then click option'

Aexpress

Dhttp

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'http' instead of 'express' for import.

Calling 'http()' instead of 'express()'.

You import the 'express' package, assign it to a variable named 'express', then call it to create the app.