Optional Chaining
Optional Chaining
Nested object reads fail when an intermediate value is null or undefined. Optional chaining stops the read at that point and produces undefined instead of throwing an error.
This is common with profile data, API responses, and configuration objects that may be incomplete.
Your task: Write getCity(user) so it returns the user's city when user.profile.address.city exists. Return "Unknown" when any part of that path is missing.
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Optional Chaining
Nested object reads fail when an intermediate value is null or undefined. Optional chaining stops the read at that point and produces undefined instead of throwing an error.
This is common with profile data, API responses, and configuration objects that may be incomplete.
Your task: Write getCity(user) so it returns the user's city when user.profile.address.city exists. Return "Unknown" when any part of that path is missing.