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

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

A). 1

B). 0

C). undefined

D). null

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

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

A). let

B). var

C). const

D). function

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

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

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 do you declare a global variable inside a function?

A). Using var

B). Using let

C). Using const

D). Assigning to window

Which of the following can create a global variable?

A). var

B). let

C). const

D). All of the above