Which of the following can be used to prevent accidental modification of global variables?

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

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

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

A). window

B). global

C). document

D). process

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

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

A). Hello

B). undefined

C). error

D). null

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

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

A). object

B). undefined

C). function

D). global

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

A). let

B). var

C). const

D). function

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

A). 1

B). 0

C). undefined

D). null