Q
What is the purpose of the Null data type in JavaScript?

Answer & Solution

Answer: Option B
Solution:
The Null data type is used in JavaScript to explicitly indicate that a variable does not have a value or to reset a variable's value to null. It's distinct from undefined, which represents variables that have not been assigned a value.
Related Questions on Average

Which of the following statements accurately describes the Boolean data type in JavaScript?

A). It represents textual data

B). It represents numeric data

C). It represents logical values

D). It represents an absence of value

What does the expression typeof null return in JavaScript?

A). number

B). string

C). object

D). boolean

What does the expression typeof true return in JavaScript?

A). number

B). string

C). boolean

D). undefined

Which data type represents variables that have been explicitly set to have no value?

A). Number

B). Undefined

C). String

D). Null

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A). Textual data

B). Numeric data

C). Logical values

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Which primitive data type represents variables that have been explicitly set to represent no value?

A). Number

B). String

C). Undefined

D). Null

What does the expression typeof '123' return in JavaScript?

A). number

B). string

C). undefined

D). boolean

What is the result of the expression typeof 'Hello' in JavaScript?

A). number

B). string

C). undefined

D). boolean

What does the expression typeof 42 return in JavaScript?

A). number

B). string

C). undefined

D). boolean

Which of the following statements accurately describes the Boolean data type in JavaScript?

A). It represents textual data

B). It represents numeric data

C). It represents logical values

D). It represents an absence of value