Modern JavaScript from the Beginning - Second Edition - Web Animations API - Ball Project

This tutorial covers the transition from CSS-based animations to JavaScript using the Web Animations API. It starts with an overview of the initial setup using CSS and HTML, then moves on to implementing the same animation using JavaScript. The tutorial explains how to create animation objects and options, and how to add controls such as play, pause, reverse, speed up, and slow down. The video provides a comprehensive guide to using the Web Animations API for creating and controlling animations programmatically.

What is the initial method used to animate the SVG ball before switching to JavaScript?

• CSS

• JavaScript

• SVG

• HTML

Which API is used to replace CSS animations with JavaScript?

• DOM API

• Web Animations API

• Fetch API

• Canvas API

What is the purpose of creating an array in the JavaScript animation setup?

• To store HTML elements

• To define animation properties

• To list CSS styles

• To manage event listeners

Which method is used to start the animation in JavaScript?

• start()

• begin()

• init()

• animate()

What is the default duration set for the animation in milliseconds?

• 2000

• 1000

• 4000

• 3000

How can you pause the animation using JavaScript?

• By removing the animation element

• By setting the duration to zero

• By using the pause() method

• By calling the stop() method

What happens when the reverse method is called on an animation?

• The animation resets to the beginning

• The animation stops

• The animation plays in reverse indefinitely

• The animation reverses for the same duration it played forward

Which property is adjusted to change the speed of the animation?

• transform

• iterations

• duration

• playbackRate

What is the effect of setting the playback rate to 0.5?

• The animation plays twice as fast

• The animation plays at half speed

• The animation reverses

• The animation stops

What additional feature is suggested for extra credit?

• Adding more colors

• Adding sound effects

• Changing the ball's shape

• Displaying the current speed