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 result of null === undefined?
A). 1
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C). Error
D). NaN
Which symbol is used to denote a string template literal?
A). ''
B).
C). ``
D). {}
Which function can convert a number to a string in JavaScript?
A). toString()
B). parseInt()
C). String()
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Which method can be used to convert a string to a number in JavaScript?
A). parseInt()
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Which of the following is not a primitive data type in JavaScript?
A). String
B). Number
C). Object
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A). symbol
B). object
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D). undefined
How do you declare a variable with an undefined value?
A). let x;
B). let x = '';
C). let x = 0;
D). let x = null;
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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
What is the data type of true in JavaScript?
A). String
B). Boolean
C). Number
D). Object