What is the data type of the value 'null' (with quotes) in JavaScript?
A). String
B). Number
C). Null
D). Undefined
What is the data type of the value 42 in JavaScript?
A). String
B). Boolean
C). Number
D). Null
Which data type represents an intentional absence of any value in JavaScript?
A). Null
B). Undefined
C). String
D). Number
What is the outcome of typeof [1, 2, 3] in JavaScript?
A). String
B). Number
C). Array
D). Object
Which data type represents unique and immutable values in JavaScript introduced in ES6?
A). Symbol
B). Object
C). Array
D). Function
Which data type represents a block of reusable code in JavaScript?
A). String
B). Object
C). Function
D). Number
Which of the following is a primitive data type in JavaScript?
A). Object
B). Array
C). Function
D). Boolean
Which of these is a complex or reference data type in JavaScript?
A). Number
B). Boolean
C). Object
D). String
Which of the following is not a valid data type in JavaScript?
A). Array
B). Symbol
C). Map
D). Tuple
What will be the result of typeof 'hello' in JavaScript?
A). String
B). Number
C). Undefined
D). Function