Salesforce JavaScript Developer Practice Exam

What will happen if you call checkAge with an object having age as 18?

1. You are an adult!

2. You are still an adult.

3. Hmm.. You don't have an age I guess

The correct answer is: Hmm.. You don't have an age I guess

To understand why the response is C, it’s important to consider how the function checkAge is likely implemented. If checkAge is designed to check the existence of a property named "age" in the object, and if no such property is present or if the function does not properly interpret the age when it is present, it could lead to the result of "Hmm.. You don't have an age I guess." In JavaScript, if you pass an object to a function and the function attempts to access a property that doesn’t exist on that object, it will return undefined or lead to a fallback message. If the function is structured to check explicitly for the property rather than evaluating its value, it might not recognize that age is indeed present and set to 18. In contrast, responses that indicate the user is an adult would imply that the condition for interpreting age has been met correctly, where the age property exists and is evaluated as valid. However, since the provided answer focuses on the non-existence or misinterpretation of the age property, it aligns with what would happen if the function does not correctly identify or check for an age value. Therefore, a function that results in the message about the absence of an age prop indicates potential handling issues or