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 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
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
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 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 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 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 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 difference between let and var in terms of function scope?
A). let is block-scoped, var is function-scoped
B). let is function-scoped, var is block-scoped
C). They are both block-scoped
D). They are both function-scoped