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 is the benefit of block scope in JavaScript?
A). It reduces variable conflicts
B). It increases global scope
C). It simplifies variable declarations
D). It makes variables inaccessible
How do you declare a function-scoped variable using ES6?
A). var
B). let
C). const
D). function
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(innerVar); outside of exampleFunction if var innerVar = 'Hello'; is defined inside exampleFunction?
A). Hello
B). undefined
C). Error
D). null
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
Which of the following demonstrates lexical scoping?
A). Closure
B). Hoisting
C). Global scope
D). Local scope
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
Which of the following is true about function scope in JavaScript?
A). Variables are accessible globally
B). Variables are accessible only within their functions
C). Variables are accessible within an object
D). Variables are accessible everywhere in the code
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
How do you declare a block-scoped variable in ES6?
A). var
B). let
C). const
D). function