Question 1

A developer creates a class that represents a blog post based on the requirement that aPost should have a body author and view count.The Code shown Below:Class Post {// Insert code hereThis.body =bodyThis.author = author;this.viewCount = viewCount;}}Which statement should be inserted in the placeholder on line 02 to allow for a variable to be setto a new instanceof a Post with the three attributes correctly populated?

Options :

A : super (body, author, viewCount) {

B : Function Post (body, author, viewCount) {

C : constructor (body, author, viewCount) {

D : constructor() {

Answer: C

Question 2

Which javascript methods can be used to serialize an object into a string and deserializea JSON string into an object, respectively?

Options :

A : JSON.stringify and JSON.parse

B : JSON.serialize and JSON.deserialize

C : JSON.encode and JSON.decode

D : JSON.parse and JSON.deserialize

Answer: A

Question 3

Given two expressions var1 and var2. What are two valid ways to return the logical ANDof the two expressions and ensure it is data type Boolean ?Choose 2 answers:

Options :

A : Boolean(var1 && var2)

B : var1 && var2

C : var1.toBoolean() && var2toBoolean()

D : Boolean(var1) && Boolean(var2)

Answer: A,D

Question 4

Refer to the following array:Let arr = [1, 2, 3, 4, 5];Which three options result in x evaluating as [1, 2]?Choose 3 answer

Options :

A : let x = arr. slice (2);

B : let x = arr. slice (0, 2);

C : let x arr.filter((a) => (return a <= 2 });

D : let x = arr.filter ((a) => 2 }) ;

E : let x =arr.splice(0, 2);

Answer: A,B,C

Question 5

Refer to the code below:Which value can a developer expect when referencing country,capital,cityString?

Options :

A : 'London'

B : undefined

C : An error

D : 'NaN'

Answer: D

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