Express application structure - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Express module.

Express

const express = require([1]);

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

A"http"

B"express"

C"fs"

D"path"

Attempts:

3 left

💡 Hint

Common Mistakes

Using other module names like 'http' or 'fs' instead of 'express'.

Forgetting the quotes around the module name.

The Express module is imported using require("express"). This allows you to create an Express app.

2fill in blank

medium

Complete the code to create an Express application instance.

Express

const app = [1]();

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

Ahttp

Bserver

Crouter

Dexpress

Attempts:

3 left

💡 Hint

Common Mistakes

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

Using 'router()' which is for routing, not app creation.

You create an Express app by calling the express() function.

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

B"3000"

Capp

Dexpress

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the port as a string like '3000' instead of number 3000.

Passing the app or express variable instead of a port number.

The port number should be a number, not a string. So use 3000 without quotes.

4fill in blank

hard

Fill both blanks to define a GET route for the root URL 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 GET route.

Using '/home' instead of '/' for the root URL.

The get method defines a GET route. The root URL is '/'.

5fill in blank

hard

Fill all three blanks to import Express, create an app, and start the server on port 4000.

Express

const [1] = require('[2]');
const app = [3]();
app.listen(4000, () => {
  console.log('Server started on port 4000');
});

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

Aexpress

Chttp

Dexpressjs

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'http' or 'expressjs' instead of 'express' as module name.

Using different variable names for import and app creation.

You import Express with require('express'), assign it to express, then call express() to create the app.