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

How is the Symbol data type different from other primitive data types in JavaScript?

A). Symbols can be used as object keys

B). Symbols can be compared directly

C). Symbols can be used in mathematical operations

D). Symbols can be concatenated with strings

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

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 true return in JavaScript?

A). number

B). string

C). boolean

D). undefined

What is the result of the expression typeof undefined in JavaScript?

A). number

B). string

C). undefined

D). boolean

Which primitive data type represents textual data?

A). Number

B). String

C). Boolean

D). Undefined

What does the expression typeof null return in JavaScript?

A). number

B). string

C). object

D). boolean

Which primitive data type represents unique identifiers introduced in ECMAScript 6?

A). Number

B). Symbol

C). Boolean

D). Undefined

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 Boolean data type represent in JavaScript?

A). Textual data

B). Numeric data

C). Logical values

D). Absence of value