JS Practice — Built-in Objects

Array.prototype.join() — build a file path

📖 Usage Example

const parts = ['usr', 'local', 'bin']
parts.join('/')  // → 'usr/local/bin'

Use join('/') to construct file paths from an array of path segments.

Array.prototype.join() — building paths

Joining path segments with '/' is a classic use case for join().

Challenge: Implement buildPath(parts) that joins path segments with '/'.

buildPath(['usr', 'local', 'bin']) // → 'usr/local/bin'
buildPath(['src', 'index.ts'])     // → 'src/index.ts'

💡 Hints (2)