Modern Web Design with HTML5, CSS3, and JavaScript - HTML5 Canvas Drawing with JavaScript

This video tutorial explains how to set up and manipulate a canvas element using JavaScript. It covers creating a canvas element, selecting it with JavaScript, and using the getContext method to draw on it. The tutorial demonstrates setting fill styles, drawing rectangles, and adjusting canvas attributes like height, width, and background color. It also shows how to position shapes on the canvas using coordinates, providing examples of drawing a rectangle in the center, bottom right, and top left corners.

What is the purpose of placing script tags just below the canvas element in HTML?

• To prevent JavaScript errors

• To make the canvas visible on the page

• To allow the canvas to load into the DOM before manipulation

• To ensure the canvas is styled correctly

Which method is used to obtain a drawing context on a canvas?

• getContext

• drawContext

• getCanvas

• setContext

What does setting a fill style on a canvas context allow you to do?

• Add text to the canvas

• Rotate the canvas

• Specify the color for drawing shapes

• Change the canvas size

What is the default size of a canvas element if not specified?

• 500 by 500 pixels

• 400 by 400 pixels

• 200 by 200 pixels

• 300 by 150 pixels

How can you change the background color of a canvas using JavaScript?

• By setting the canvas's fill style

• By using the setBackground method

• By updating the style property of the canvas

• By changing the canvas's context

What parameters are required to draw a rectangle on a canvas?

• X and Y coordinates, color, and size

• Color, width, and height

• X and Y coordinates, width, and height

• Width, height, and border

How would you position a rectangle in the top left corner of a canvas?

• Set the fill style to transparent

• Set the X and Y values to 100

• Set the X and Y values to 0

• Set the width and height to 0