Answer & Solution
Answer: Option A
Solution:
The typeof operator returns 'number' for NaN (Not-a-Number) values.
Q
What will typeof NaN return?
Related Questions on Average
What is the output of typeof function() {}?
A). function
B). object
C). undefined
D). number
How do you declare a variable with an undefined value?
A). let x;
B). let x = '';
C). let x = 0;
D). let x = null;
Which symbol is used to denote a string template literal?
A). ''
B).
C). ``
D). {}
What will typeof [1, 2, 3] return?
A). array
B). object
C). number
D). list
What is the result of typeof undefined?
A). undefined
B). null
C). object
D). number
What is the result of null == undefined?
A). 1
B). 0
C). Error
D). NaN
What is the data type of an array in JavaScript?
A). Array
B). Object
C). Collection
D). List
Which of the following is not a primitive data type in JavaScript?
A). String
B). Number
C). Object
D). Boolean
What is the output of typeof null?
A). null
B). undefined
C). object
D). number
What is the result of typeof Symbol('id')?
A). symbol
B). object
C). string
D). undefined