path.extname for file extensions in Node.js - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the 'path' module in Node.js.

Node.js

const path = require('[1]');

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

Afs

Bhttp

Cpath

Durl

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'fs' instead of 'path' to import the module.

Forgetting to use quotes around the module name.

The path module is a built-in Node.js module used for handling file paths. You import it using require('path').

2fill in blank

medium

Complete the code to get the file extension from the filename.

Node.js

const ext = path.[1]('example.txt');

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

Abasename

Bextname

Cdirname

Djoin

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'basename' which returns the filename, not the extension.

Using 'dirname' which returns the directory path.

The extname method returns the extension of a file path, including the dot.

3fill in blank

hard

Fix the error in the code to correctly get the extension of 'archive.tar.gz'.

Node.js

const extension = path.[1]('archive.tar.gz');

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

Aextname

Bbasename

Cparse

Dformat

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'basename' which returns the full filename.

Using 'parse' or 'format' which are for different purposes.

The extname method returns the extension including the last dot and characters after it. For 'archive.tar.gz', it returns '.gz'.

4fill in blank

hard

Fill both blanks to get the extension of a file path stored in variable 'filePath'.

Node.js

const ext = path.[1]([2]);

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

Aextname

BfilePath

Cbasename

Ddirname

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'basename' instead of 'extname' for the method.

Using a string literal instead of the variable name.

Use path.extname(filePath) to get the extension of the file path stored in filePath.

5fill in blank

hard

Fill all three blanks to extract the extension and check if it equals '.js'.

Node.js

const ext = path.[1](filename);
if (ext === [2]) {
  console.log('This is a JavaScript file.');
}

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

Aextname

B'.js'

C'.txt'

Dbasename

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'basename' instead of 'extname'.

Comparing to '.txt' instead of '.js'.

Use path.extname(filename) to get the extension, then compare it to the string '.js' to check if the file is a JavaScript file.