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

Which of the following can create a global variable?

A). var

B). let

C). const

D). All of the above

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

A). Encapsulation

B). Namespace

C). Strict mode

D). Block scoping

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

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 is the output of typeof window in a browser environment?

A). object

B). undefined

C). function

D). global

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

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

A). window

B). global

C). document

D). process

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