Answer & Solution
Answer: Option B
Solution:
Global variables can be accessed and modified from any part of the code.
Q
Which statement is true about global variables in JavaScript?
Related Questions on Average
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 do you declare a global variable inside a function?
A). Using var
B). Using let
C). Using const
D). Assigning to window
What keyword is used to ensure a variable is block-scoped?
A). var
B). global
C). let
D). window
What is the output of typeof window in a browser environment?
A). object
B). undefined
C). function
D). global
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 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
What is the global object in a browser environment?
A). window
B). global
C). document
D). this
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
Which keyword is used to declare a variable in the global scope?
A). let
B). var
C). const
D). function