Q
What does the clearRect method do in Canvas?

Answer & Solution

Answer: Option B
Solution:
The clearRect method in Canvas is used to clear a specified rectangular area, allowing for dynamic content changes.
Related Questions on Average

What happens if a browser does not support the <canvas> element?

A). A. The Canvas is displayed with default settings

B). B. An error is shown

C). C. The Canvas is rendered as an image

D). D. It falls back to alternative content

How does Canvas handle transparency in drawings?

A). A. Through opacity settings

B). B. By using blending modes

C). C. Transparent pixels are not supported

D). D. Through CSS styles

Which of the following is true about Canvas compared to SVG?

A). A. Canvas is resolution-independent

B). B. Canvas is vector-based

C). C. Canvas is more suitable for static graphics

D). D. Canvas provides DOM access to drawn elements

What does the fillRect method do in Canvas?

A). A. Draws a rectangle with a fill color

B). B. Clears the Canvas

C). C. Draws a circle

D). D. Draws a line

How can you access a Canvas element in JavaScript?

A). A. Using getElementById

B). B. Using getElementsByClassName

C). C. Using getElementsByTagName

D). D. All of the above

Which event is commonly used to trigger drawing operations on a Canvas element?

A). A. click event

B). B. load event

C). C. hover event

D). D. submit event

How can you draw a circle on a Canvas element using JavaScript?

A). A. Using drawCircle method

B). B. Using drawArc method

C). C. Circles cannot be drawn directly

D). D. Using arc method

Which rendering context is commonly used for 2D graphics in Canvas?

A). A. 3d

B). B. webgl

C). C. 2d

D). D. canvas

Which property sets the fill color for drawing operations in Canvas?

A). A. fillStyle

B). B. strokeStyle

C). C. lineWidth

D). D. globalAlpha

Which property sets the line style (width and style) for drawing operations in Canvas?

A). A. lineWidth

B). B. lineStyle

C). C. strokeStyle

D). D. borderStyle