Smartly Prepare Exam with Free Online JSA-41-01 Practice Test

We offer the latest JSA-41-01 practice test designed for free and effective online JSA - Certified Associate JavaScript Programmer certification preparation. It's a simulation of the real JSA-41-01 exam experience, built to help you understand the structure, complexity, and topics you'll face on exam day.

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));

Options :

A : 6

B : 9

C : 12

D : 15

Answer: A

Question 2

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

Options :

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 3

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 4

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

Question 5

In the following code snippet, what line of code should be inserted to declare a method named showInfo that outputs the string "Hi" to the console?

class A {

// insert code here

}

let a = new A();

console.log(a.showInfo());

Options :

A : let showInfo = function() { console.log("Hi"); }

B : showInfo = function() { return "Hi"; }

C : showInfo() { return "Hi"; }

D : function showInfo() { return "Hi"; }

Answer: B