path.basename and path.dirname in Node.js - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the base file name from the path.

Node.js

const path = require('path');
const filePath = '/home/user/docs/file.txt';
const baseName = path.[1](filePath);
console.log(baseName);

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

Ajoin

Bbasename

Cextname

Ddirname

Attempts:

3 left

💡 Hint

Common Mistakes

Using path.dirname instead of path.basename returns the folder path, not the file name.

Using path.extname returns only the file extension.

The path.basename function returns the last part of a path, which is the file name.

2fill in blank

medium

Complete the code to get the directory name from the path.

Node.js

const path = require('path');
const filePath = '/home/user/docs/file.txt';
const dirName = path.[1](filePath);
console.log(dirName);

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Abasename

Bextname

Cresolve

Ddirname

Attempts:

3 left

💡 Hint

Common Mistakes

Using path.basename returns the file name, not the directory.

Using path.extname returns the file extension.

The path.dirname function returns the directory part of a path, excluding the file name.

3fill in blank

hard

Fix the error in the code to correctly get the base name of the file.

Node.js

const path = require('path');
const filePath = '/var/log/system.log';
const base = path.[1](filePath, '.log');
console.log(base);

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

Abasename

Bjoin

Cextname

Ddirname

Attempts:

3 left

💡 Hint

Common Mistakes

Using path.dirname returns the directory, not the file name.

Using path.extname returns only the extension, not the file name.

Use path.basename with the second argument to remove the extension from the file name.

4fill in blank

hard

Fill both blanks to create a dictionary with file names as keys and their directories as values.

Node.js

const path = require('path');
const files = ['/a/b/c.txt', '/d/e/f.js', '/g/h/i.md'];
const fileDirs = {};
for (const file of files) {
  fileDirs[path.[1](file)] = path.[2](file);
}
console.log(fileDirs);

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Abasename

Bdirname

Cextname

Djoin

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping basename and dirname causes keys and values to be reversed.

Using extname returns only file extensions, not names or directories.

Use basename to get the file name and dirname to get the directory for each file path.

5fill in blank

hard

Fill the blanks to create an object mapping file extensions to their base names.

Node.js

const path = require('path');
const files = ['/x/y/z.py', '/a/b/c.js', '/m/n/o.py'];
const extMap = {};
for (const file of files) {
  const ext = path.[1](file);
  const base = path.[2](file, ext);
  if (!extMap[ext]) {
    extMap[ext] = [];
  }
  extMap[ext].push(base);
}
console.log(extMap);

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Aextname

Bbasename

Cext

Ddirname

Attempts:

3 left

💡 Hint

Common Mistakes

Using dirname instead of extname returns folder paths, not extensions.

Not passing the extension to basename causes the extension to remain in the base name.

path.extname gets the file extension, path.basename gets the file name without the extension when passed the extension as second argument.