JS Practice — Built-in Objects

String.prototype.localeCompare() — sort array of strings

📖 Usage Example

'apple'.localeCompare('banana')   // → negative
'banana'.localeCompare('apple')   // → positive
'abc'.localeCompare('abc')        // → 0

Use localeCompare() to compare strings in a locale-aware way, returning negative, zero, or positive.

String.prototype.localeCompare() — Sorting

Using .localeCompare as the comparator for .sort() produces locale-aware alphabetical order.

Challenge: Implement sortStrings(arr) that returns a new sorted array using .localeCompare.

sortStrings(['banana', 'apple', 'cherry']) // → ['apple', 'banana', 'cherry']

💡 Hints (1)

• Use `[...arr].sort((a, b) => a.localeCompare(b))` to avoid mutating the input.