JS Practice — Built-in Objects

String.prototype.search() — position of digit

📖 Usage Example

'hello world'.search(/world/)   // → 6
'hello'.search(/d/)           // → -1
'abc123'.search(/[0-9]/)       // → 3

Use search() to find the index of the first regex match in a string, returning -1 if not found.

String.prototype.search() — Finding Digits

Use .search() to locate digits in a string.

Challenge: Implement digitPosition(str) that returns the position of the first digit, or -1 if none.

digitPosition('price: 5') // → 7
digitPosition('no digits') // → -1

💡 Hints (1)