Q
What does the onload event handler ensure in HTML5 canvas?

Answer & Solution

Answer: Option B
Solution:
The onload event handler ensures that the image is fully loaded before drawing it on the canvas.
Related Questions on Average

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 method is used to load an image in HTML5 canvas?

A). loadImage()

B). createImage()

C). Image()

D). new Image()

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

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 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)

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 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 scale an image using drawImage?

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

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

C). drawImage(img, 100, 100, img.width / 2, img.height / 2)

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

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