Can a global variable be accessed inside a function?

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

A). let

B). var

C). const

D). function

Which of the following can create a global variable?

A). var

B). let

C). const

D). All of the above

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

A). 1

B). 0

C). undefined

D). null

What is the global object in a browser environment?

A). window

B). global

C). document

D). this

Can global variables lead to name collisions in large codebases?

A). Yes

B). No

C). Only if not managed properly

D). Only in strict mode

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

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

A). object

B). undefined

C). function

D). global

Which of the following methods can help in avoiding global variables?

A). Using functions to encapsulate code

B). Using objects to namespace code

C). Using ES6 modules

D). All of the above

What is the output of console.log(globalVar); if globalVar = 'Hello'; is assigned inside a function without using var, let, or const?

A). Hello

B). undefined

C). error

D). null