Q
Which of the following is true about function scope in JavaScript?

Answer & Solution

Answer: Option B
Solution:
Function-scoped variables are accessible only within the functions in which they are defined.
Related Questions on Average

How do you declare a function-scoped variable using ES6?

A). var

B). let

C). const

D). function

Can function-scoped variables be accessed from outside their functions?

A). Yes

B). No

C). Only if they are constants

D). Only if they are defined globally

What is the output of console.log(blockVar); outside of a block if let blockVar = 'Block'; is defined inside a block?

A). Block

B). undefined

C). Error

D). null

What happens to a function-scoped variable outside of its function?

A). It becomes a global variable

B). It becomes a local variable

C). It is accessible only within the function

D). It throws an error

What is the purpose of function scope in JavaScript?

A). To limit the visibility of variables

B). To make variables global

C). To create constants

D). To execute functions

What is block scope in JavaScript?

A). Variables scoped to a block

B). Variables scoped to a function

C). Variables scoped globally

D). Variables scoped locally

What is function scope in JavaScript?

A). Variables defined within a function

B). Variables defined outside a function

C). Variables defined within an object

D). Variables defined globally

How does lexical scoping affect nested functions in JavaScript?

A). Nested functions inherit variables from their outer functions

B). Nested functions have their own separate variables

C). Nested functions cannot access outer function variables

D). Nested functions create global variables

What happens if you declare a variable with the same name in both function and block scopes?

A). It creates two separate variables

B). It causes an error

C). It combines the scopes

D). It prioritizes the function scope

What is the output of console.log(innerVar); outside of exampleFunction if var innerVar = 'Hello'; is defined inside exampleFunction?

A). Hello

B). undefined

C). Error

D). null