Can a global variable be accessed inside a function?

What keyword is used to ensure a variable is block-scoped?

A). var

B). global

C). let

D). window

How do you declare a global variable inside a function?

A). Using var

B). Using let

C). Using const

D). Assigning to window

What is the output of typeof window in a browser environment?

A). object

B). undefined

C). function

D). global

What is the output of console.log(globalThis === window); in a browser environment?

A). 1

B). 0

C). undefined

D). null

What is the output of console.log(window.globalLet); if let globalLet = 'Hello'; is declared in the global scope?

A). Hello

B). undefined

C). error

D). null

How can you access a global variable inside a function if it has the same name as a local variable?

A). By using the window object

B). By using the global object

C). By using a different name for the global variable

D). By using the this keyword

Which keyword is used to declare a variable in the global scope?

A). let

B). var

C). const

D). function

What happens if you declare a variable without var, let, or const inside a function?

A). It becomes a global variable

B). It becomes a local variable

C). It throws an error

D). It becomes a constant

How can you avoid global scope pollution?

A). By using local variables

B). By using IIFE (Immediately Invoked Function Expressions)

C). By using modules

D). All of the above

Which of the following can create a global variable?

A). var

B). let

C). const

D). All of the above