Salesforce JavaScript Developer Practice Exam

What will be the output when calling getAge with argument 21?

1. "number"

2. "array"

3. "object"

4. "NaN"

The correct answer is: "object"

The function getAge is likely designed to return the type of the argument passed to it. In JavaScript, when you pass the number 21 as an argument to the function, it is recognized as a numeric value. If the function is using the `typeof` operator to check the type of the argument, calling `typeof 21` will return "number". Given that the question is focused on the output derived from calling getAge with the specific argument of 21, it seems there has been a misunderstanding with associating the correct output with the choices. If the intention of the function is to directly assess the type of the argument provided (in this case, a number), one would expect "number" to be the output. The output options also include types such as "array" and "object," which would not correspond with passing a number like 21. An output of "NaN" would typically occur in cases where a non-numeric value is evaluated in a numeric context or if arithmetic operations result in an undefined or unrepresentable quantity, which is not the case here. In summary, the output when calling the function with 21 should directly reflect the type of the argument, which is indeed "number". If the answer was