What is the data type of the value NaN in JavaScript?
A). Null
B). String
C). Number
D). Boolean
Which data type is used to represent a unique identifier in JavaScript?
A). Identifier
B). Key
C). Object
D). Symbol
What is the data type of the value Infinity in JavaScript?
A). Number
B). String
C). Boolean
D). Null
What will be the output of typeof NaN in JavaScript?
A). String
B). Number
C). NaN
D). Undefined
Which of the following is not a valid JavaScript data type?
A). Integer
B). Object
C). Symbol
D). NaN
What will be the output of typeof {} in JavaScript?
A). Object
B). Null
C). Undefined
D). Boolean
What is the data type of the value null in JavaScript?
A). Object
B). String
C). Null
D). Undefined
Which of the following is not a valid JavaScript variable name according to naming conventions?
A). myVariable
B). _myVariable
C). 2ndVariable
D). MyVariable
What is the data type of the value 'null' (as a string) in JavaScript?
A). Object
B). String
C). Null
D). Undefined
Which data type is used to represent the absence of a value in JavaScript?
A). Null
B). Undefined
C). NaN
D). Boolean