Free Salesforce Javascript Developer I Exam Dumps

MultipleChoice

A 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 boot time with an event?

A)

B)

C)

D)

MultipleChoice

Refer to the following code:

What is returned by the function call on line 13?

MultipleChoice

Which code statement below correctly persists an object in localStorage?

MultipleChoice

The developer wants to test the array shown:

Const arr = Array (5) . fill (0);

Which two test are the most accurate for this array? Choose 2 answers

MultipleChoice

A developer receives a comment from the Tech lead that the code below gives an error.

Which line edit should be made to make this code run?

MultipleChoice

Refer to the following code:

What will the console when the button is clicked?

MultipleChoice

Refer to the code below:

Why does the function bar have access to variable =?

MultipleChoice

Which statement can a developer apply to increment the browser's navigation history without a page refesh?

MultipleChoice

Universal containers (UC) just launched a new landing page, but users complain that the website is slow, A developer found some functions that cause this problem, To verify this, the developer decides to execute everything and log the time each of these suspicious function consumes.

Which function can then developer use to obtain the time spent by every one of the three functions?

MultipleChoice

Refer to the code below:

What is the output after the ode executes successfully?

A.

End

Start

Success