JavaScript and Graphics Questions and Answers Latest Version 100% Pass

JavaScript and Graphics Questions and Answers Latest Version 100% Pass What does the `Context('2d')` method do in JavaScript graphics? It returns a drawing context that allows you to draw 2D graphics on the canvas. How can you clear an entire HTML5 canvas? Use `Rect(0, 0, , t)`. Which JavaScript method is used to animate graphics on a canvas? `requestAnimationFrame(callback)`. How do you change the stroke color of a shape in the canvas? Set `eStyle` to the desired color. What does `Rect(50, 50, 100, 100)` do? It draws a filled rectangle at (50,50) with a width and height of 100 pixels. 2 How do you draw a circle using the canvas API? Use `(x, y, radius, 0, Math.PI * 2)`. What function starts a new path for drawing in canvas? `Path()`. How can you draw a straight line on a canvas? Use `To(x, y)` and `To(x, y)`, then call `e()`. What JavaScript object represents an HTML canvas element? The `HTMLCanvasElement` object. How can you write text on a canvas? Use `Text('Hello', x, y)`. What property is used to set the width of lines in canvas drawings? `Width`. 3 How can you create a gradient fill on a canvas? Use `eLinearGradient()` or `eRadialGradient()`. What event should you listen for to detect when the mouse moves over a canvas? `mousemove`. How do you check if a point is inside a rectangle drawn on a canvas? Compare the point’s coordinates with the rectangle’s boundaries. What JavaScript function is commonly used to create smooth animations? `requestAnimationFrame()`. What does `e(Math.PI / 4)` do? It rotates the canvas by 45 degrees.