Answer & Solution
Answer: Option C
Solution:
The instanceof operator returns false for all primitive values because they are not objects.
Q
How does the instanceof operator behave with primitive values in JavaScript?
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What does typeof Math evaluate to in JavaScript?
A). math
B). object
C). number
D). undefined
What is the result of Boolean('false') in JavaScript?
A). 1
B). 0
C). NaN
D). null
What will be the output of typeof null in JavaScript?
A). object
B). null
C). undefined
D). string
What is the output of typeof function(){} in JavaScript?
A). function
B). object
C). undefined
D). null
What is the output of typeof Symbol('id') in JavaScript?
A). symbol
B). object
C). string
D). null
What will be the output of typeof {} in JavaScript?
A). object
B). array
C). null
D). undefined
How does the instanceof operator work in JavaScript?
A). Checks if an object has a specific prototype in its prototype chain.
B). Checks if two variables are of the same type.
C). Checks if a variable is null.
D). Checks if a variable is undefined.
What does Number('123') return in JavaScript?
A). 123
B). '123'
C). NaN
D). 1
How does the typeof operator handle arrays in JavaScript?
A). array
B). object
C). undefined
D). null
How does JavaScript evaluate Boolean(0)?
A). 1
B). 0
C). null
D). undefined