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

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

A). window

B). global

C). document

D). process

How do you declare a global variable inside a function?

A). Using var

B). Using let

C). Using const

D). Assigning to window

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 inside a function with the same name as a global variable?

A). It creates a new local variable

B). It throws an error

C). It modifies the global variable

D). It assigns the global variable to 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

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 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 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 keyword is used to ensure a variable is block-scoped?

A). var

B). global

C). let

D). window