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

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

A). let

B). var

C). const

D). function

In Node.js, what is the global object called?

A). window

B). global

C). document

D). process

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 will be the output of console.log(window.myVar); if var myVar = 'Hello'; is declared outside any function?

A). Hello

B). undefined

C). error

D). null

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 a global variable be accessed inside a function?

A). Yes

B). No

C). Only if passed as a parameter

D). Only if defined with var

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 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

How do you declare a global variable inside a function?

A). Using var

B). Using let

C). Using const

D). Assigning to window