JavaScript Quiz

What is the result of true && false || true?

• false

• true

• undefined

• null

What is the output of the following code?

• One

• Two

• Default

• null

What will be logged?

• Hello

• World

• undefined

• null

• 1 2 3

• 0 1 2

• 0 1 2 3

• 0 1

• John

• 25

• undefined

• null

What does the ! (NOT) operator do in JavaScript?

• It converts a true value to false and vice versa

• It performs an arithmetic operation

• It is used for concatenation

• It checks if a variable exists

How do you add an element to the end of an array?

• array.add()

• array.push()

• array.append()

• array.insert()

What is the purpose of the break statement in a switch case?

• To repeat the case execution

• To stop further case execution

• To continue to the next case

• To skip all cases

What will be the result of this expression: 3 > 2 && 2 > 1?

• true

• false

• undefined

• null

• Equal

• Not equal

• undefined

• null