Answer & Solution
Answer: Option A
Solution:
Lexical scoping allows nested functions to inherit variables from their outer functions, creating closures and preserving scope.
Q
How does lexical scoping affect nested functions in JavaScript?
Related Questions on Average
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 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 do you declare a function-scoped variable using ES6?
A). var
B). let
C). const
D). function
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 can you access a variable declared in an inner block from an outer block?
A). Using the var keyword
B). Using the let keyword
C). Using the const keyword
D). Using the this keyword
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
Which keyword is used to declare a function-scoped variable?
A). var
B). let
C). const
D). function
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 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
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