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Salesforce Updated JavaScript-Developer-I Exam Questions and Answers by brayden

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Salesforce JavaScript-Developer-I Exam Overview :

Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
Exam Code: JavaScript-Developer-I Dumps
Vendor: Salesforce Certification: Salesforce Developer
Questions: 219 Q&A's Shared By: brayden
Question 28

A developer copied a JavaScript object:

Questions 28

How does the developer access dan's forstName,lastName? Choose 2 answers

Options:

A.

dan,name

B.

dan,firstname ( ) + dan, lastName ( )

C.

dan, firstName = dan.lastName

D.

dan,name ( )

Discussion
Aryan
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Jessie Mar 26, 2026
did you use PDF or Engine? Which one is most useful?
Elise
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Cian Mar 19, 2026
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Georgina
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Corey Mar 16, 2026
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Ayesha
They are study materials that are designed to help students prepare for exams and certification tests. They are basically a collection of questions and answers that are likely to appear on the test.
Ayden Mar 4, 2026
That sounds interesting. Why are they useful? Planning this week, hopefully help me. Can you give me PDF if you have ?
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Question 29

A developer at Universal Containers is creating their new landing page based on HTML, CSS, and JavaScript. The website includes multiple external resources that are loaded when the page is opened.

To ensure that visitors have a good experience, a script named personalizeWebsiteContent needs to be executed when the webpage is loaded and there is no need to wait for the resources to be available.

Which statement should be used to call personalizeWebsiteContent based on the above business requirement?

Options:

A.

windows,addEventListener('load', personalizeWebsiteContent);

B.

windows,addEventListener('DOMContent Loaded ', personalizeWebsiteContent);

C.

windows,addEventListener('onload', personalizeWebsiteContent);

D.

windows,addEventListener('onDOMCContentLoaded', personalizeWebsiteContent);

Discussion
Question 30

developer creates a new web server that uses Node.js. It imports a server library that

uses events and callbacks for handling server functionality.

The server library is imported with require and is made available to the code by a

variable named server. The developer wants to log any issues that the server has while booting

up.

Given the code and the information the developer has, which code logs an error at boost

with an event?

Options:

A.

Server.catch ((server) => {

console.log(‘ERROR’, error);

});

B.

Server.error ((server) => {

console.log(‘ERROR’, error);

});

C.

Server.on (‘error’, (error) => {

console.log(‘ERROR’, error);

});

D.

Try{

server.start();

} catch(error) {

console.log(‘ERROR’, error);

}

Discussion
Question 31

developer uses the code below to format a date.

Questions 31

After executing, what is the value of formattedDate?

Options:

A.

May 10, 2020

B.

June 10, 2020

C.

October 05, 2020

D.

November 05, 2020

Discussion
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