What will be the output of the code above?
A). 10
B). 20
C). Error
D). Undefined
What will be the output of the code above?
A). 30
B). 31
C). TypeError
D). Undefined
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 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 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
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 does the const keyword signify in JavaScript?
A). Constant variable
B). Mutable variable
C). Global variable
D). Block-scoped variable
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