Answer & Solution
Answer: Option A
Solution:
The typeof undefined returns 'undefined' in JavaScript.
Q
What is the outcome of typeof undefined in JavaScript?
Related Questions on Average
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 not a valid data type in JavaScript?
A). Array
B). Symbol
C). Map
D). Tuple
What is the result of 0 / 0 in JavaScript?
A). Infinity
B). 0
C). NaN
D). 1
Which data type represents positive infinity in JavaScript?
A). Infinity
B). Number
C). NaN
D). Null
Which data type represents an intentional absence of any value in JavaScript?
A). Null
B). Undefined
C). String
D). Number
Which data type represents a block of reusable code in JavaScript?
A). String
B). Object
C). Function
D). Number
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 'null' (with quotes) in JavaScript?
A). String
B). Number
C). Null
D). Undefined
Which of these is a complex or reference data type in JavaScript?
A). Number
B). Boolean
C). Object
D). String
What is the outcome of typeof [1, 2, 3] in JavaScript?
A). String
B). Number
C). Array
D). Object