JS Practice — Built-in Objects

String.prototype.match() — no match returns null

📖 Usage Example

'test 123 foo'.match(/d+/)    // → ['123', index: 5, ...]
'test 1 and 2'.match(/d+/g)  // → ['1', '2']

Use match() to search a string against a regex and return the match results, or null if not found.

String.prototype.match() — Null Return

When the regex does not match, .match() returns null.

Challenge: Implement hasMatch(str, pattern) that returns true when the pattern is found.

hasMatch('hello123', /\d+/) // → true
hasMatch('hello', /\d+/)    // → false

💡 Hints (1)