JS Practice — Built-in Objects

String.prototype.localeCompare() — less-than returns negative

📖 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() — Less Than

When str sorts before compareString, the result is negative.

Challenge: Implement comesBefore(a, b) that returns true when a sorts before b.

comesBefore('a', 'b') // → true
comesBefore('b', 'a') // → false

💡 Hints (1)