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
What will be the output of the code above?
A). 10
B). 20
C). Error
D). Undefined
What is the benefit of using const over var in JavaScript?
A). const variables have function scope
B). const variables are hoisted to the top
C). const variables prevent accidental reassignments
D). const variables can be used anywhere
What happens if you try to declare a const variable without initializing it immediately?
A). SyntaxError
B). ReferenceError
C). TypeError
D). No error, the variable remains undefined
Which keyword is used to declare block-scoped variables in JavaScript?
A). var
B). let
C). const
D). block
What will be the output of the code above?
A). 30
B). 31
C). Error
D). Undefined
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
What is the primary distinction between const and let in JavaScript?
A). const variables are immutable
B). let variables are block-scoped
C). const variables have function scope
D). let variables can be reassigned
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
Which of the following statements is true about block scope in JavaScript?
A). Variables declared with let have global scope
B). Variables declared with let have function scope
C). Variables declared with let are block-scoped
D). Variables declared with let are hoisted
What will be the output of the code above?
A). 30
B). 31
C). TypeError
D). Undefined