Question 1

What will be the output when the following code is executed:

class Car {

_brand = "";

set brand(value) {

this._brand = value;

}

get brand() {

return this._brand;

}

let car = new Car();

car.brand = "Toyota";

console.log(car.brand)

Options :

A : Toyota

B : undefined Toyota

C : null

D : undefined

Answer: A

Question 2

What will be the value of result after the following code is executed?

var str = "The quick brown fox";

var result = str.replace(/[aeiou]/gi, '*');

Options :

A : "Th* qck brwn fx"

B : "Th* quck brwn fx"

C : "Th qck brwn fx."

D : Th* q**ck br*wn f*x

Answer: D

Question 3

What is the output of the following code?

const add = (a, b) => a + b;

const double = n => add(n, n);

console.log(double(3));

Options :

A : 6

B : 9

C : 12

D : 15

Answer: A

Question 4

What is the output of the following code snippet?

class Shape{};

class Pyramid extends Shape{};

class SquareBasedPyramid extends Pyramid {};

let shape = new SquareBasedPyramid ();

console.log(`${shapeinstance of Shape} ${shape instance of Pyramid } ${shape instance of SquareBasedPyramid }`)

Options :

A : true true true

B : false false true

C : true false true

D : false false false

Answer: A

Question 5

What is the value of property "y" in object "point2" after the following code is executed?

let point = {x: 100, y: 200};

let point2 = {...point};

point2.y = 300;

Options :

A : undefined

B : 100

C : 300

D : 200

Answer: C