Free JS Institute JSA-41-01 Exam Questions

Become JS Institute Certified with updated JSA-41-01 exam questions and correct answers

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Total 160 Questions | Updated On: Oct 25, 2026

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Question 1

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 2

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;

A : undefined

B : 100

C : 300

D : 200

Answer: C

Question 3

What is the correct way to define an object "person" with properties "firstName", "lastName", and "age"?

A : const person = {firstName: 'Jane', lastName: 'Doe', age: 30};

B : const person = new Object('firstName' = 'Jane', 'lastName' = 'Doe', 'age' = 30);

C : const person = {'firstName': 'Jane', 'lastName': 'Doe', 'age': 30};

D : const person('firstName' = 'Jane', 'lastName' = 'Doe', 'age' = 30);

Answer: A

Question 4

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 5

What line of code should be inserted into the Product class definition to add a property price to the class?class Product { constructor(name) { this.name = name; // insert code here }}

A : price: 0;

B : this.price = 0;

C : var price = 0;

D : let price = 0;

Answer: B

Page: 1 / 32

Total 160 Questions | Updated On: Oct 25, 2026

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