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 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
In Node.js, what is the global object called?
A). window
B). global
C). document
D). process
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 of the following methods can help in avoiding global variables?
A). Using functions to encapsulate code
B). Using objects to namespace code
C). Using ES6 modules
D). All of the above
What is the output of typeof window in a browser environment?
A). object
B). undefined
C). function
D). global
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
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
What keyword is used to ensure a variable is block-scoped?
A). var
B). global
C). let
D). window