JavaScript Quizz Batch 2

What is the correct syntax to output "Hello My Name is Amy" in JavaScript?

• println("Hello My Name is Amy")

• echo("Hello My Name is Amy");

• console.log("Hello My Name is Amy")

• printf("Hello My Name is Amy")

What does the typeof operator return for?

• Array

• Object

• String

• Boolean

Which of these is a correct way to declare a constant in JavaScript?

• const PI = 3.14

• let PI = 3.14

• var PI = 3.14

• const PI = 3,14

What will the following code output?

• true

• false

• undefined

• NaN

Which one is the correct code to make the string ALL CAPS?

• message = message.toLowerCase()

• message = message.toUppercase()

• message = message.toupperCase()

• message = message.toUpperCase()

Which is the following is a correct arrow function syntax?

• function hello ( ) => {

  console.log(`Hello`)

  }

• const hello = ( ) => {

  console.log(`Hello`)

  }

• hello ( ) => {

  console.log(`Hello`)

  }

• hello => console.log('Hello')

How do you create an array in JavaScript?

• let arr = "1, 2, 3"

• let arr = "[1, 2, 3]"

• const arr = "[1, 2, 3]"

• const arr = [1, 2, 3]

What is the output of console.log(typeof NaN); ?

• number

• NaN

• undefined

• object

Which keyword is used to create a function in JavaScript?

• function

• Function

• class

• object

How can you check if a variable x is an array?

• x instanceof Array

• x == "array"

• typeof x === "array"

• x.isArray()