Do functions in JavaScript necessarily return a value ?

Few functions return values by default

Consider the code snippet given belowvar count = [1,,3];What is the observation made?

The omitted value takes ‚Äö√Ñ√∫undefined‚Äö√Ñ√π

Explore topic-wise MCQs in Javascript.

This section includes 52 Mcqs, each offering curated multiple-choice questions to sharpen your Javascript knowledge and support exam preparation. Choose a topic below to get started.

51.	Do functions in JavaScript necessarily return a value ?
A.	It is mandatory
B.	Not necessary
C.	Few functions return values by default
D.	All of the mentioned
Answer» D. All of the mentioned

Discussion

52.	Consider the code snippet given belowvar count = [1,,3];What is the observation made?
A.	The omitted value takes ‚Äö√Ñ√∫undefined‚Äö√Ñ√π
B.	This results in an error
C.	This results in an exception
D.	None of the mentioned
Answer» B. This results in an error

Discussion