What is the output of typeof Symbol('id') in JavaScript?

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 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

How does the typeof operator handle arrays in JavaScript?

A). array

B). object

C). undefined

D). null

What does typeof new Date() evaluate to in JavaScript?

A). date

B). object

C). string

D). null

What does typeof window.evaluate evaluate to in JavaScript?

A). function

B). object

C). string

D). undefined

What will be the output of typeof {} in JavaScript?

A). object

B). array

C). null

D). undefined

How does JavaScript evaluate Boolean(0)?

A). 1

B). 0

C). null

D). undefined

What is the result of typeof undefined in JavaScript?

A). undefined

B). string

C). null

D). object

What does Number('123') return in JavaScript?

A). 123

B). '123'

C). NaN

D). 1