What is the difference between let and var in terms of function scope?

Which keyword is used to declare a function-scoped variable?

A). var

B). let

C). const

D). function

What is hoisting in JavaScript?

A). Moving variables to the top of their function or global scope

B). Making variables undefined

C). Creating new variables

D). None of the above

How do you declare a block-scoped variable in ES6?

A). var

B). let

C). const

D). function

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

A). var

B). let

C). const

D). function

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 lexical scoping in JavaScript?

A). Variables scoped to the entire codebase

B). Variables scoped to their functions

C). Variables scoped based on their position in the code

D). Variables scoped based on their names

What is the output of console.log(outerVar); outside of outerFunction if var outerVar = 'Outer'; is defined inside outerFunction?

A). Outer

B). undefined

C). Error

D). null

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

Which of the following demonstrates lexical scoping?

A). Closure

B). Hoisting

C). Global scope

D). Local 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