Question 1

What is the correct output of the following code:

var obj = {

value: 10

};

var foo = function() {

console.log(this.value);

};

var bar = function() {

console.log(this.value);

};

var boundFoo = foo.call(obj);

var boundBar = bar.bind(obj)();

console.log(boundFoo === boundBar);

Options :

A : 10 10 false

B : 10 undefined false

C : 10 10 true

D : undefined 10 false

Answer: C

Question 2

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 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 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 5

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