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 will be logged to the console after executing the code above?
A). ['red', 'blue', 'green', 'yellow']
B). ['red', 'blue', 'green']
C). ['yellow']
D). Error
What will be the output of the code above?
A). 30
B). 31
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
How can you declare a constant named PI with a value of 3.14 in JavaScript using const?
A). const PI = 3.14;
B). PI = 3.14;
C). let PI = 3.14;
D). var PI = 3.14;
What is the primary advantage of using block scope in JavaScript?
A). Reducing code size
B). Preventing variable hoisting
C). Avoiding global variables
D). Improving performance
Which of the following statements about const is true?
A). Variables declared with const can be reassigned
B). const variables have function scope
C). const variables cannot be used in loops
D). const variables are block-scoped
What will be the output of the code above?
A). 30
B). 31
C). TypeError
D). Undefined
What does the const keyword signify in JavaScript?
A). Constant variable
B). Mutable variable
C). Global variable
D). Block-scoped variable
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