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

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

A). To represent numeric values

B). To represent an intentional absence of value

C). To represent textual data

D). To represent logical values

Which data type is represented by the value null in JavaScript?

A). Numeric data

B). Textual data

C). Absence of value

D). Logical value

What does the expression typeof null return in JavaScript?

A). number

B). string

C). object

D). boolean

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

A). number

B). string

C). undefined

D). boolean

How is the Undefined data type different from the Null data type in JavaScript?

A). Undefined represents an intentional absence of value

B). Null represents variables not initialized

C). Undefined is used for object keys

D). Null is used for mathematical operations

Which primitive data type represents variables that are declared but not initialized?

A). Number

B). String

C). Undefined

D). Null

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

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

A). number

B). string

C). undefined

D). boolean

What does the Boolean data type represent in JavaScript?

A). Textual data

B). Numeric data

C). Logical values

D). Absence of value

What does the expression typeof true return in JavaScript?

A). number

B). string

C). boolean

D). undefined