Answer & Solution
Answer: Option A
Solution:
typeof null returns 'object', which is a historical bug in JavaScript.
Q
What will be the output of typeof null in JavaScript?
Related Questions on Average
What does typeof true evaluate to in JavaScript?
A). boolean
B). number
C). string
D). undefined
How does JavaScript evaluate Boolean(0)?
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
What is the result of typeof NaN in JavaScript?
A). number
B). NaN
C). undefined
D). string
What is the result of Boolean('false') in JavaScript?
A). 1
B). 0
C). NaN
D). null
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 Math evaluate to in JavaScript?
A). math
B). object
C). number
D). undefined
How does the typeof operator handle arrays in JavaScript?
A). array
B). object
C). undefined
D). null
What will be the output of [] instanceof Array in JavaScript?
A). 1
B). 0
C). null
D). undefined
How does JavaScript evaluate typeof /^regex$/ in JavaScript?
A). regexp
B). object
C). string
D). null