Which data type represents positive infinity in JavaScript?
A). Infinity
B). Number
C). NaN
D). Null
What is the outcome of typeof [1, 2, 3] in JavaScript?
A). String
B). Number
C). Array
D). Object
Which operator checks if an object is an instance of a specific object type in JavaScript?
A). instanceof
B). typeof
C). isInstanceof
D). isTypeOf
Which data type represents unique and immutable values in JavaScript introduced in ES6?
A). Symbol
B). Object
C). Array
D). Function
What will let x = null; console.log(typeof x); output in JavaScript?
A). Object
B). Null
C). Undefined
D). Number
Which of the following is a primitive data type in JavaScript?
A). Object
B). Array
C). Function
D). Boolean
What is the data type of the value true in JavaScript?
A). Number
B). String
C). Boolean
D). Undefined
What is the data type of the value undefined in JavaScript?
A). Number
B). Boolean
C). String
D). Undefined
Which data type represents an intentional absence of any value in JavaScript?
A). Null
B). Undefined
C). String
D). Number
What will be the result of typeof 'hello' in JavaScript?
A). String
B). Number
C). Undefined
D). Function