Answer & Solution
Answer: Option A
Solution:
The const keyword in JavaScript signifies a constant variable whose value cannot be changed after initialization, making it immutable.
Q
What does the const keyword signify in JavaScript?
Related Questions on Average
Which of the following statements is true about constants declared using const?
A). They can be reassigned multiple times
B). They are hoisted to the top
C). They are mutable
D). They are immutable
Which of the following is NOT an example of a block in JavaScript?
A). Function body
B). if statement body
C). while loop body
D). Object literal
What will be the output of the code above?
A). 30
B). 31
C). TypeError
D). Undefined
Which statement about JavaScript's const is true?
A). const variables can be redeclared
B). const variables are globally scoped
C). const variables are mutable
D). const variables cannot be reassigned
What happens if you try to reassign a value to a constant declared using const?
A). SyntaxError
B). TypeError
C). ReferenceError
D). No error, value is reassigned
Which keyword is used to declare block-scoped variables in JavaScript?
A). var
B). let
C). const
D). block
What will happen when you try to execute this code?
A). 14 will be logged to the console
B). 14159 will be logged to the console
C). SyntaxError will occur
D). TypeError will occur
What will be logged to the console after executing the code above?
A). ['red', 'blue', 'green', 'yellow']
B). ['red', 'blue', 'green']
C). ['yellow']
D). Error
In JavaScript, const variables are not hoiste What does this mean?
A). They are hoisted to the top of the block
B). They cannot be used before declaration
C). They are accessible in nested scopes
D). They are block-scoped variables
What will be the output of the code above?
A). 30
B). 31
C). Error
D). Undefined