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

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(globalVar); if globalVar = 'Hello'; is assigned inside a function without using var, let, or const?

A). Hello

B). undefined

C). error

D). null

What is the purpose of the global object in JavaScript?

A). To store local variables

B). To provide a namespace for global variables and functions

C). To define constants

D). To execute code in strict mode

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

A). Hello

B). undefined

C). error

D). null

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

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

What is the global object in a browser environment?

A). window

B). global

C). document

D). this

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

A). object

B). undefined

C). function

D). global