Answer & Solution
Answer: Option A
Solution:
typeof function(){} returns 'function'.
Q
What is the output of typeof function(){} in JavaScript?
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What does typeof new Date() evaluate to in JavaScript?
A). date
B). object
C). string
D). null
How does JavaScript evaluate Boolean(0)?
A). 1
B). 0
C). null
D). undefined
What is the result of typeof NaN in JavaScript?
A). number
B). NaN
C). undefined
D). string
What will be the output of typeof null in JavaScript?
A). object
B). null
C). undefined
D). string
What will be the output of typeof {} in JavaScript?
A). object
B). array
C). null
D). undefined
What does typeof true evaluate to in JavaScript?
A). boolean
B). number
C). string
D). undefined
What will be the output of [] instanceof Array in JavaScript?
A). 1
B). 0
C). null
D). undefined
How does the instanceof operator behave with primitive values in JavaScript?
A). Throws an error
B). Returns true for all primitive values
C). Returns false for all primitive values
D). Primitive values cannot be used with instanceof
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 typeof window.evaluate evaluate to in JavaScript?
A). function
B). object
C). string
D). undefined