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 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

How do you display an entire image on the canvas using drawImage?

A). drawImage(img, 0, 0)

B). drawImage(img, 100, 100)

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

D). drawImage(img, img.width, img.height)

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 height of the image to be drawn on the canvas?

A). img.height

B). height

C). img.height / 2

D). height / 2

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)

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 does the height attribute of an image element specify in HTML?

A). Height of the image

B). Source of the image

C). Type of the image

D). Width of the image

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)

Which parameter of the drawImage method specifies the image source?

A). img

B). src

C). imageSource

D). source