What is the result of 0 / 0 in JavaScript?
A). Infinity
B). 0
C). NaN
D). 1
What does NaN represent in JavaScript?
A). Not a Number
B). Infinity
C). Positive Infinity
D). Negative Infinity
Which of the following is not a valid data type in JavaScript?
A). Array
B). Symbol
C). Map
D). Tuple
What is the data type of the value 42 in JavaScript?
A). String
B). Boolean
C). Number
D). Null
Which data type represents unique and immutable values in JavaScript introduced in ES6?
A). Symbol
B). Object
C). Array
D). Function
What is the outcome of typeof undefined in JavaScript?
A). String
B). Undefined
C). Null
D). Number
What is the data type of the value undefined in JavaScript?
A). Number
B). Boolean
C). String
D). Undefined
What is the outcome of typeof [1, 2, 3] in JavaScript?
A). String
B). Number
C). Array
D). Object
What will let x = null; console.log(typeof x); output in JavaScript?
A). Object
B). Null
C). Undefined
D). Number
What is the data type of the value 'null' (with quotes) in JavaScript?
A). String
B). Number
C). Null
D). Undefined