path.parse and path.format in Node.js - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does path.parse() do in Node.js?

path.parse() takes a file path string and breaks it into an object with parts like root, dir, base, ext, and name. It helps you understand or use each part separately.

beginner

What are the main properties returned by path.parse()?

The main properties are:

• root: The root of the path (like '/' or 'C:\\')
• dir: The directory path without the file
• base: The file name with extension
• ext: The file extension (like '.txt')
• name: The file name without extension

beginner

What does path.format() do in Node.js?

path.format() takes an object with path parts (like dir, base, name, ext) and combines them into a full path string. It's like putting puzzle pieces back together.

intermediate

How do path.parse() and path.format() work together?

You can use path.parse() to split a path into parts, change or inspect those parts, then use path.format() to build a new path string from the parts. It's like breaking a sentence into words, changing a word, then joining it back.

beginner

If you have { dir: '/home/user', base: 'file.txt' }, what will path.format() return?

It will return the string '/home/user/file.txt'. It joins the directory and the base file name into a full path.

Which method breaks a file path into parts like root, dir, base, ext, and name?

A path.parse()

B path.format()

C path.join()

D path.resolve()

path.parse() splits a path string into its parts.

Which method combines parts of a path object into a full path string?

A path.parse()

B path.format()

C path.basename()

D path.dirname()

path.format() builds a path string from an object with path parts.

What property in the object returned by path.parse() contains the file extension?

A name

B base

C ext

D dir

The ext property holds the file extension, like '.txt'.

If you want to change the file name but keep the directory, which method helps you split the path first?

A path.format()

B path.extname()

C path.join()

D path.parse()

path.parse() splits the path so you can change parts like the file name.

Given { root: '/', dir: '/home/user', base: 'file.txt', ext: '.txt', name: 'file' }, what will path.format() return?

A /home/user/file.txt

B /file.txt

C /home/user/file

D file.txt

path.format() combines the parts into the full path string.

Explain how you can use path.parse() and path.format() together to rename a file in a path.

Think about breaking the path, changing the file name, then joining it back.

Describe the difference between the base and name properties in the object returned by path.parse().

One includes the extension, the other does not.