Modern JavaScript from the Beginning - Second Edition - Canvas Element and API

The video tutorial introduces the Canvas API, a part of HTML5, used for drawing graphics via JavaScript. It covers creating a canvas element in HTML, setting up a 2D context with JavaScript, and drawing shapes, lines, and text. The tutorial also demonstrates how to incorporate images into the canvas. The video aims to familiarize viewers with canvas methods and properties, setting the stage for creating animations using requestAnimationFrame in future lessons.

What is the primary purpose of the Canvas API in web development?

• To draw graphics dynamically using JavaScript

• To style web pages with CSS

• To create static HTML elements

• To manage server-side databases

Which HTML tag is used to create a canvas element?

What method is used to create a 2D context for drawing on a canvas?

• createContext('2d')

• getContext('2d')

• get2DContext()

• create2DContext()

Which method is used to draw a filled rectangle on the canvas?

• paintRect()

• createRect()

• fillRect()

• drawRect()

What is the purpose of the arc method in the Canvas API?

• To draw text

• To draw circles

• To draw rectangles

• To draw lines

How can you change the color of a shape's border in the Canvas API?

• Using lineColor

• Using strokeStyle

• Using borderColor

• Using fillStyle

Which method is used to start a new path for drawing lines?

• beginPath()

• startPath()

• newPath()

• initPath()

What method is used to draw text on the canvas?

• writeText()

• text()

• fillText()

• drawText()

What should you do before drawing an image on the canvas to avoid issues?

• Set the image source to null

• Wait for the image to load

• Resize the image

• Convert the image to a different format

Which event listener is used to ensure an image is loaded before drawing it on the canvas?

• load

• onReady

• onLoad

• imageLoad