JS Practice — Built-in Objects

String.prototype.matchAll() — empty results

📖 Usage Example

const str = 'a1 b2 c3'
const matches = [...str.matchAll(/(w)(d)/g)]
matches.length   // → 3
matches[0][1]    // → 'a'

Use matchAll() with the g flag to iterate over all regex matches and access capture groups in each result.

String.prototype.matchAll() — No Matches

When the pattern does not match anything, the spread array is empty.

Challenge: Implement noDigits(str) that returns true when str contains no digit sequences.

noDigits('hello') // → true
noDigits('hi5')   // → false

💡 Hints (1)