The Price Checker

Let's write a function getTicketPrice(age) that takes a person's age.

• If the person is 18 or older, the price is $20.

• If the person is younger than 18, the price is $10.

Constraint: You must use the ternary operator to solve this.

Test Cases:

• getTicketPrice(30) should return $20

• getTicketPrice(18) should return $20

• getTicketPrice(10) should return $10

💡 The 'Syntax Nudge'

Your "condition" will be age >= 18. Your "valueIfTrue" will be $20. Your "valueIfFalse" will be $10.

How do you assemble these three parts using the ? : syntax?

The Ternary (? :)

This operator is a "ternary" because it works on three operands. It's our final operator in this bootcamp.

It's just a clean, one-line shortcut for a simple if...else statement.

The if...else way:
let message;

if (age >= 21) {

message = "You may enter.";

} else {

message = "You are too young.";

}

The Ternary way:
let message = (age >= 21) ? "You may enter." : "You are too young.";

The syntax is: (condition) ? valueIfTrue : valueIfFalse