Question 1

A developer is working on an ecommerce website where the delivery date is dynamicallycalculated based on the current day. The code line below is responsible for this calculation.Const deliveryDate = new Date ();Due to changes in the business requirements, the delivery date must now be today'sdate + 9 days.Which code meets this new requirement?

Options :

A : deliveryDate.setDate(( new Date ( )).getDate () +9);

B : deliveryDate.setDate( Date.current () + 9);

C : deliveryDate.date = new Date(+9) ;

D : deliveryDate.date = Date.current () + 9;

Answer: A

Question 2

A developer is creating a simple webpage with a button. When a user clicks this buttonfor the first time, a message is displayed.The developer wrote the JavaScript code below, but something is missing. Themessage gets displayed every time a user clicks the button, instead of just the first time.01 function listen(event) {02 alert ( 'Hey! I am John Doe') ;03 button.addEventListener ('click', listen);Which two code lines make this code work as required?Choose 2 answers

Options :

A : On line 02, use event.first to test if it is the first execution.

B : On line 04, use event.stopPropagation ( ),

C : On line 04, use button.removeEventListener(' click'' , listen);

D : On line 06, add an option called once to button.addEventListener().

Answer: C,D

Question 3

A developer creates a simple webpage with an input field. When a user enters text inthe input field and clicks the button, the actual value of the field must be displayed in theconsole.Here is the HTML file content:< input type ='' text'' value=''Hello'' name =''input'' >< button type =''button'' >Display < /button >The developer wrote the javascript code below:Const button = document.querySelector('button');button.addEvenListener('click', () => (Const input = document.querySelector('input');console.log(input.getAttribute('value'));When the user clicks the button, the output is always ''Hello''.What needs to be done make this code work as expected?

Options :

A : Replace line 04 with console.log(input .value);

B : Replace line 03 with const input = document.getElementByName('input');

C : Replace line 02 with button.addEventListener(''onclick'', function() {

D : Replace line 02 with button.addCallback(''click'', function() {

Answer: A

Question 4

What is the result of the code block?

Options :

A : The console logs only 'flag'.

B : The console logs 'flag' and another flag.

C : An error is thrown.

D : The console logs 'flag' and then an error is thrown.

Answer: D

Question 5

Which three actions can be using the JavaScript browser console?Choose 3 answers:

Options :

A : View and change DOM the page.

B : Display a report showing the performance of a page.

C : Run code that is not related to page.

D : view , change, and debug the JavaScript code of the page.

E : View and change security cookies.

Answer: A,C,D