Answer & Solution
Answer: Option A
Solution:
NaN stands for 'Not a Number' and represents an invalid or unrepresentable value resulting from arithmetic operations.
Q
What does NaN represent in JavaScript?
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What is the outcome of typeof undefined in JavaScript?
A). String
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C). Null
D). Number
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A). Number
B). Boolean
C). Object
D). String
Which operator checks if an object is an instance of a specific object type in JavaScript?
A). instanceof
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A). Infinity
B). 0
C). NaN
D). 1
What will let x = null; console.log(typeof x); output in JavaScript?
A). Object
B). Null
C). Undefined
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Which of the following is not a valid data type in JavaScript?
A). Array
B). Symbol
C). Map
D). Tuple
Which data type represents a block of reusable code in JavaScript?
A). String
B). Object
C). Function
D). Number
Which data type represents an intentional absence of any value in JavaScript?
A). Null
B). Undefined
C). String
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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