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

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

A). object

B). undefined

C). function

D). global

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

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

Which of the following can create a global variable?

A). var

B). let

C). const

D). All of the above

Which statement is true about global variables in JavaScript?

A). They are not accessible inside functions

B). They can be accessed and modified from any part of the code

C). They are constants

D). They can only be read, not modified

What is the global object in a browser environment?

A). window

B). global

C). document

D). this

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 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

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

A). let

B). var

C). const

D). function