JSA-41-01 Practice Online

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);

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 is the output of the following code?

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

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

console.log(double(3));

A : 6

B : 9

C : 12

D : 15

Answer: A

Question 3

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

var num1 = 10;

var num2 = 20;

var result = (num2 === 20) ? "yes" : "no";

A : 10

B : 20

C : "yes"

D : "no"

Answer: C

Question 4

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)

A : Toyota

B : undefined Toyota

C : null

D : undefined

Answer: A

Question 5

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);

A : 10 10 false

B : 10 undefined false

C : 10 10 true

D : undefined 10 false

Answer: C

Name:	JSA - Certified Associate JavaScript Programmer
Exam Code:	JSA-41-01
Certification:	JavaScript
Vendor:	JS Institute
Total Questions:	160
Last Updated:	May 15, 2024

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