Question

What will happen if a return statement does not have an associated expression?

(a) It returns the value 0

(b) It will throw an exception

(c) It returns the undefined value

(d) It will throw an error

I got this question in examination.

This intriguing question comes from Defining and Invoking Functions in chapter Lexical Structures of JavaScript

Answer 1

Correct choice is (c) It returns the undefined value

For explanation: A function without a return statement will return a default value. If the return statement does not have an associated expression then it returns an undefined value.