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

Answer & Solution

Answer: Option A
Solution:
Number('123') converts the string '123' to a number 123.
Related Questions on Average

What is the result of typeof NaN in JavaScript?

A). number

B). NaN

C). undefined

D). string

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

A). date

B). object

C). string

D). null

How does JavaScript evaluate typeof 'Hello'?

A). string

B). object

C). undefined

D). null

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

What is the result of Boolean('false') in JavaScript?

A). 1

B). 0

C). NaN

D). null

What does typeof window.evaluate evaluate to in JavaScript?

A). function

B). object

C). string

D). undefined

What does the typeof operator return for an undefined variable?

A). undefined

B). number

C). boolean

D). string

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

A). symbol

B). object

C). string

D). null

How does the typeof operator handle arrays in JavaScript?

A). array

B). object

C). undefined

D). null