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

Which parameter of the drawImage method specifies the target position on the canvas?

A). x, y

B). tx, ty

C). position

D). targetPosition

How do you display an image with dimensions 200x150 pixels on the canvas using drawImage?

A). drawImage(img, 0, 0, 200, 150)

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

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

D). drawImage(img, 100, 100, 200, 150)

Which parameter of the drawImage method specifies the image source?

A). img

B). src

C). imageSource

D). source

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)

How do you draw an image at coordinates (100, 100) on the canvas using drawImage?

A). drawImage(img, 100, 100)

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

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

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

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)

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 is the purpose of the new Image() method in HTML5 canvas?

A). To create a new canvas

B). To create a new image

C). To create a new context

D). To create a new element

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