Q
Which data type is used to represent the absence of a value in JavaScript?

Answer & Solution

Answer: Option B
Solution:
The Undefined data type in JavaScript is used to represent the absence of a value, typically when a variable has been declared but not yet assigned a value.
Related Questions on Average

What will be the output of typeof NaN in JavaScript?

A). String

B). Number

C). NaN

D). Undefined

Which data type is used to represent a list of elements in JavaScript?

A). List

B). Array

C). Tuple

D). Set

What is the data type of the value null in JavaScript?

A). Object

B). String

C). Null

D). Undefined

What is the data type of the value 'null' (as a string) in JavaScript?

A). Object

B). String

C). Null

D). Undefined

Which of the following data types is used to represent a function in JavaScript?

A). Func

B). Function

C). Method

D). Procedure

What is the data type of the value Infinity in JavaScript?

A). Number

B). String

C). Boolean

D). Null

What data type is used to represent a collection of key-value pairs in JavaScript?

A). Object

B). Array

C). Map

D). Set

Which symbol is used to denote a comment in JavaScript?

A). //

B). --

C). #

D). /* ... */

What is the data type of the value true in JavaScript?

A). Boolean

B). String

C). Number

D). Undefined

What will the data type of the variable name be if it is assigned the value 'John Doe'?

A). Number

B). String

C). Boolean

D). Undefined