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
How do you declare a block-scoped variable in 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
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 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
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 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
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 function-scoped variable using ES6?
A). var
B). let
C). const
D). function