Salesforce certsexpert download Full Version Javascript-developer-i Exam by Brayden q22 vce pdf

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Exam Name:	Salesforce Certified JavaScript Developer JS-Dev-101
Exam Code:	JavaScript-Developer-I Dumps
Vendor:	Salesforce	Certification:	Salesforce Developer
Questions:	217 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:

dan,name

dan,firstname ( ) + dan, lastName ( )

dan, firstName = dan.lastName

dan,name ( )

Discussion

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:

windows,addEventListener('load', personalizeWebsiteContent);

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

windows,addEventListener('onload', personalizeWebsiteContent);

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:

Server.catch ((server) => {

console.log(‘ERROR’, error);

});

Server.error ((server) => {

console.log(‘ERROR’, error);

});

Server.on (‘error’, (error) => {

console.log(‘ERROR’, error);

});

Try{

server.start();

} catch(error) {

console.log(‘ERROR’, error);

}

Discussion

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Question 31

developer uses the code below to format a date.

Questions 31