JS Practice — Built-in Objects

String.prototype.replaceAll() — no match returns original

📖 Usage Example

'foo bar foo'.replaceAll('foo', 'baz')  // → 'baz bar baz'
'banana'.replaceAll('a', 'o')           // → 'bonono'

Use replaceAll() to replace every occurrence of a search string or regex (with /g flag) with the replacement.

String.prototype.replaceAll() — No Match

If the search value is not found, replaceAll returns the original string unchanged.

Challenge: Implement tryReplaceAll(str, from, to) using replaceAll.

tryReplaceAll('hello', 'xyz', '!!!') // → 'hello'

💡 Hints (1)