Question 1

What will be the output of the following code?

const a = { x: 1 };

const b = { y: 2 };

const c = { ...a, b, z: 3 };

console.log(c);

Options :

A : { x: 1, y: 2, z: 3}

B : { y: 2 }

C : {x: 1, b: { y: 2 }, z: 3}

D : undefined

Answer: C

Question 2

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

let x = 10;

function add5(num) {

num += 5;

return num;

}

x = add5(x);

Options :

A : None of the Above

B : 10

C : 15

D : 5

Answer: C

Question 3

The shape object can be converted to JSON format using the built-in command:

Options :

A : JSON.parse(shape);

B : JSON.stringify(shape);

C : JSON(shape);

D : shape.toJSON();

Answer: B

Question 4

What will appear on the console after executing the following code?

let car = { model: "Tesla", year: 2022 };

let vehicle = {...car, color: "red"};

car.year = 2021;

console.log(`${vehicle.model} ${vehicle.year} ${vehicle.color}`);

Options :

A : Tesla 2021 red

B : Tesla 2022 red

C : Tesla 2021 blue

D : Tesla 2022 black

Answer: B

Question 5

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