Which of the following demonstrates lexical scoping?
A). Closure
B). Hoisting
C). Global scope
D). Local scope
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
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 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
How do you declare a block-scoped variable in 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
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