Modern JavaScript from the Beginning - Second Edition - Drum Machine Project

This video tutorial guides viewers through creating a simple drum machine using the audio API and JavaScript. It covers setting up HTML and CSS, mapping keyboard keys to sounds, integrating audio elements, and handling keydown events to play sounds and animate keys. The project demonstrates how to use data attributes for key mapping and includes final testing to ensure functionality.

What is the main purpose of the drum machine project introduced in the video?

• To learn about the audio API

• To practice CSS styling

• To create a visual animation

• To build a calculator

Which HTML element is used to represent a key in the drum machine interface?

• Span

• Button

• Input

• Div

What is the purpose of adding a data-key attribute to the HTML elements?

• To store user data

• To add animations

• To link the elements with specific key codes

• To style the elements

Which key code is associated with the letter 'A' in the project?

• 65

• 70

• 68

• 83

What event is used to trigger the play sound function in the JavaScript code?

• click

• keyup

• keydown

• mouseover

What does the play sound function do when a key is pressed?

• Sends an alert message

• Changes the background color

• Plays the corresponding audio file

• Logs the key code to the console

How is the visual feedback implemented when a key is pressed?

• By hiding the key

• By changing the text color

• By adding a class that scales the key

• By displaying an alert