JS Practice — Built-in Objects

String.prototype.replace() — regex pattern

📖 Usage Example

'foo bar foo'.replace('foo', 'baz')    // → 'baz bar foo'
'hello'.replace(/[aeiou]/g, '*')       // → 'h*ll*'

Use replace() to replace the first occurrence of a pattern; use a /g regex to replace all occurrences.

String.prototype.replace() — Regex Pattern

Pass a regex as the first argument to match by pattern instead of literal string.

Challenge: Implement removeDigits(str) that removes all digits from a string using a regex with the g flag.

removeDigits('a1b2c3') // → 'abc'
removeDigits('hello')  // → 'hello'

💡 Hints (2)