Question 1

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 }}

Options :

A : price: 0;

B : this.price = 0;

C : var price = 0;

D : let price = 0;

Answer: B

Question 2

What expression will return true if 1. let shape1 = {x: 10, y: 20} and 1. let shape2 = {x: 10, y: 20} have the same property values?

Options :

A : shape1.x == shape2.y

B : (shape1.x == shape2.x) && (shape1.y == shape2.y)

C : shape1 == shape2

D : Object.keys(shape1) === Object.keys(shape2)

Answer: B

Question 3

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

Question 4

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 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

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