JS Practice — Built-in Objects

String.prototype.repeat() — zero count

📖 Usage Example

'ab'.repeat(3)    // → 'ababab'
'-'.repeat(5)     // → '-----'
'x'.repeat(0)    // → ''

Use repeat() to create a new string with the original repeated a specified number of times.

String.prototype.repeat() — Zero Count

Calling .repeat(0) always returns an empty string regardless of the original string.

Challenge: Implement isRepeatEmpty(str) that returns true if repeating str zero times gives an empty string.

isRepeatEmpty('hello') // → true
isRepeatEmpty('')      // → true

💡 Hints (1)