Exercism-JS/amusement-park/HINTS.md

Hints

1. Create a new visitor

• Revisit the concept "Objects" to find out how to create an object with certain keys and values.

2. Revoke the ticket

• Use the assignment operator = to set the ticketId property of the visitor object to null.
• Return the visitor object afterwards.

3. Determine the ticket status

• Revisit the concept "Conditionals" to find out how conditionally return different values from the function.
• Use the bracket notation to access the value of the given ticketId in the object.
• Use the strict equality operator === to check for null or undefined.

4. Improve the ticket status response

• Retrieve the value for a given ticketId with bracket notation like in the previous task.
• No if-statement is needed to solve this task.
• Use the nullish coalescing operator ?? instead.

5. Determine the version of terms and conditions

• Revisit the concept "Objects" for how to access nested values and start with writing down the expression for retrieving the version.
• Then use the optional chaining operator to handle the case of the missing gtc object.
• No if-statement is needed to solve this task.