path.resolve for absolute paths in Node.js - Cheat Sheet & Quick Revision

Recall & Review

beginner

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

path.resolve() creates an absolute path by combining given path segments. It starts from the right and works left until it finds an absolute path or the root.

beginner

How does path.resolve() handle relative paths?

If no absolute path is found in the arguments, path.resolve() uses the current working directory as the base to create an absolute path.

intermediate

What is the difference between path.resolve() and path.join()?

path.resolve() returns an absolute path, resolving '..' and '.' segments and starting from the root or current directory. path.join() just concatenates paths and normalizes them but may return a relative path.

intermediate

Example: What is the output of path.resolve('foo', '/bar', 'baz')?

The output is /bar/baz. Because /bar is an absolute path, path.resolve() ignores foo and starts from /bar.

beginner

Why is path.resolve() useful in Node.js projects?

It helps create absolute paths safely, avoiding errors from relative paths. This is important when working with files or modules to ensure paths are correct regardless of where the script runs.

What does path.resolve() return if no absolute path is given in arguments?

A An absolute path based on current working directory

B A relative path concatenated from arguments

C An error

D The first argument unchanged

If no absolute path is found, path.resolve() uses the current working directory as the base to return an absolute path.

Which method returns an absolute path in Node.js?

A console.log()

B path.join()

C fs.readFile()

D path.resolve()

path.resolve() returns an absolute path, while path.join() may return a relative path.

Given path.resolve('a', 'b', '/c'), what is the output?

A /a/b/c

B /c

C a/b/c

D a/b

The absolute path /c causes path.resolve() to ignore previous segments.

What does path.resolve() do with '.' and '..' in paths?

A Leaves them as is

B Removes all dots

C Resolves and normalizes them

D Throws an error

path.resolve() processes '.' and '..' to simplify the path.

Why prefer path.resolve() over manual string concatenation for paths?

A It handles different OS path formats and normalizes paths

B It runs faster

C It encrypts paths

D It only works on Windows

path.resolve() ensures paths are correct across operating systems and normalizes them.

Explain how path.resolve() creates an absolute path from given segments.

Think about how it builds the path step by step.

Describe the difference between path.resolve() and path.join() in Node.js.

Focus on the output type and path processing.