Free JavaScript-Developer-I Exam Dumps

Question 26

A developer has the function, shown below, that is called when a page loads.
JavaScript-Developer-I dumps exhibit
Where can the developer see the log statement after loading the page in the browser?

Correct Answer:C

Question 27

Refer to the code below:
const event = new CustomEvent(
//Missing Code
);
obj.dispatchEvent(event);
A developer needs to dispatch a custom event called update to send information about recordId.
Which two options could a developer insert at the placeholder in line 02 to achieve this? Choose 2 answers

Correct Answer:AD

Question 28

Refer to the following code:
JavaScript-Developer-I dumps exhibit
What is returned by the function call on line 13?

Correct Answer:A

Question 29

Which function should a developer use to repeatedly execute code at a fixed interval ?

Correct Answer:A

Question 30

A developer is setting up a new Node.js server with a client library that is built using events and callbacks. The library:
* Will establish aweb socket connection and handle receipt of messages to the server
* Will be imported with require, and made available with a variable called we.
The developer also wants to add error logging if a connection fails.
Given this info, which code segment shows the correct way to set up a client with two events that listen at execution time?

Correct Answer:C