Answer & Solution
Answer: Option A
Solution:
Block scope refers to the visibility and accessibility of variables within a specific block of code, such as within curly braces.
Q
What is block scope in JavaScript?
Related Questions on Average
How do you declare a block-scoped variable in ES6?
A). var
B). let
C). const
D). function
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 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 purpose of function scope in JavaScript?
A). To limit the visibility of variables
B). To make variables global
C). To create constants
D). To execute functions
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 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
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 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
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