Answer & Solution
Answer: Option A
Solution:
The instanceof operator checks if an object has a specific prototype in its prototype chain.
Q
How does the instanceof operator work in JavaScript?
Related Questions on Average
What is the result of Boolean('false') in JavaScript?
A). 1
B). 0
C). NaN
D). null
What does typeof true evaluate to in JavaScript?
A). boolean
B). number
C). string
D). undefined
What will be the output of typeof null in JavaScript?
A). object
B). null
C). undefined
D). string
What does Number('123') return in JavaScript?
A). 123
B). '123'
C). NaN
D). 1
What is the result of typeof undefined in JavaScript?
A). undefined
B). string
C). null
D). object
What does the typeof operator return for an undefined variable?
A). undefined
B). number
C). boolean
D). string
What will be the output of typeof {} in JavaScript?
A). object
B). array
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 JavaScript evaluate typeof /^regex$/ in JavaScript?
A). regexp
B). object
C). string
D). null
What does typeof window.evaluate evaluate to in JavaScript?
A). function
B). object
C). string
D). undefined