Q
How do you scale an image using drawImage?

Answer & Solution

Answer: Option A
Solution:
To scale an image, use drawImage(img, 0, 0, img.width / 2, img.height / 2) to scale to half the original size.
Related Questions on Average

What does the onload event handler ensure in HTML5 canvas?

A). The canvas is fully loaded

B). The image is fully loaded

C). The canvas is ready

D). The browser is open

What does the onload event ensure before drawing an image on the canvas?

A). The canvas is ready

B). The image is fully loaded

C). The browser is open

D). The canvas size is set

Which parameter of the drawImage method specifies the image source?

A). img

B). src

C). imageSource

D). source

What does the src attribute of an image element specify in HTML?

A). Source of the image

B). Size of the image

C). Type of the image

D). Width of the image

What is the purpose of the src attribute in an image element in HTML?

A). Specifies the source of the image

B). Specifies the size of the image

C). Specifies the type of the image

D). Specifies the width of the image

Which method is used to load an image in HTML5 canvas?

A). loadImage()

B). createImage()

C). Image()

D). new Image()

What event is used to ensure an image is fully loaded before drawing it on the canvas?

A). onload

B). onready

C). onloaded

D). onimage

Which parameter of the drawImage method specifies the width of the image to be drawn on the canvas?

A). img.width

B). width

C). img.width / 2

D). width / 2

How do you draw a cropped portion of an image using drawImage?

A). drawImage(img, 50, 50, 100, 100, 0, 0, 100, 100)

B). drawImage(img, 0, 0, 100, 100)

C). drawImage(img, 0, 0, img.width, img.height)

D). drawImage(img, 100, 100)

How do you draw an image at coordinates (50, 50) with dimensions 150x100 pixels on the canvas?

A). drawImage(img, 50, 50, 150, 100)

B). drawImage(img, 0, 0, 150, 100)

C). drawImage(img, 0, 0, img.width / 2, img.height / 2)

D). drawImage(img, 100, 100, 150, 100)