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JavaScript Data Types Quiz

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Questions and Answers

Which one is not a data type?

Boolean

Function (correct)

String

Integer

Which one of these is not a primitive data type?

Boolean

Array (correct)

String

Number

Which one of these is not a valid data type in JavaScript?

Void (correct)

Undefined

Null

NaN

Which of the following is a valid access modifier in Java?

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Which data type is used to store whole numbers in Java?

int Signup and view all the answers

Which of the following is a reference data type in Java?

String Signup and view all the answers

Study Notes

Data Types in JavaScript and Java

NULL is not a primitive data type in JavaScript.
NULL is not a valid data type in JavaScript.
Private is a valid access modifier in Java.
int is the data type used to store whole numbers in Java.
Array is a reference data type in Java.

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Description

Test your knowledge of data types in JavaScript by identifying which option is not a valid data type.