JavaScript Variables MCQ Questions & Answers

Javascript (JS) Variables MCQs : This section focuses on the "Javascript Variables". These Multiple Choice Questions (MCQs) should be practiced to improve the Javascript skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

1. JavaScript allows you to work with __________ primitive data types.

A. 1
B. 2
C. 3
D. 4

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2. JavaScript also defines _______ trivial data types.

A. 1
B. 2
C. 3
D. 4

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3. Variables are declared with the _______ keyword.

A. this
B. int
C. var
D. new

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4. Storing a value in a variable is called ?

A. variable declaration
B. variable destroyed
C. variable store
D. variable initialization

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5. JavaScript is untyped language.

A. Yes
B. No
C. Can be yes or no
D. Can not say

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6. A ___________ has global scope which means it can be defined anywhere in your JavaScript code.

A. local variable
B. global variable
C. simple variable
D. complex variable

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7. Which of the following true about JavaScript variable?

A. JavaScript variable names are case-sensitive
B. JavaScript variable names should not start with a numeral
C. You should not use any of the JavaScript reserved keywords as a variable name.
D. All of the above

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8. Which of the following are javaScript reserved words?

A. enum
B. long
C. finally
D. All of the above

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9. byte is reserved word in Javascript?

A. Yes
B. No
C. Can be yes or no
D. Can not say

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10. 123test is an valid variable name?

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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