Javascript-WED201c

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

• "number"

• "undefined"

• "string"

• "object"

Which keyword is used to declare a variable that cannot be reassigned?

• var

• let

• const

• static

What does the === operator check?

• Value only

• Type only

• Value and type

• Reference only

How do you create a function in JavaScript?

• function myFunc() {}

• create myFunc() {}

• func myFunc() {}

• myFunc = function {}

What will console.log(0 == '0'); output?

• true

• false

• undefined

• null

Which method is used to add an element to the end of an array?

• push()

• pop()

• shift()

• unshift()

What is the result of console.log(2 + "2");?

• 4

• "22"

• 22

• NaN

Which of these is NOT a JavaScript data type?

• Boolean

• Number

• Float

• Character

What does the break statement do in a loop?

• Pauses the loop

• Exits the loop entirely

• Skips the current iteration

• Restarts the loop

How do you access the second element of an array arr?

• arr[1]

• arr[2]

• arr[0]

• arr.second