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 does the getContext method do in Canvas?

A). A. Gets the element's context

B). B. Gets the 2D rendering context

C). C. Gets the Canvas size

D). D. Gets the Canvas ID

How do you set the dimensions of a Canvas element in HTML?

A). A. Using size attribute

B). B. Using dimensions attribute

C). C. Using width and height attributes

D). D. Using scale attribute

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 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

What is the purpose of the Canvas getContext method?

A). A. To set the Canvas context

B). B. To get the rendering context

C). C. To change the Canvas size

D). D. To clear the Canvas

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

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 method is used to draw an image onto a Canvas element?

A). A. drawImage

B). B. addImage

C). C. createImage

D). D. loadImage

Which method is used to apply transformations like rotation or scaling on Canvas drawings?

A). A. rotate

B). B. scale

C). C. transform

D). D. applyTransform

What is the purpose of the toDataURL method in Canvas?

A). A. To export Canvas data to a server

B). B. To convert Canvas content to an image URL

C). C. To resize the Canvas

D). D. To create a new Canvas