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 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

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

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

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)

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

A). loadImage()

B). createImage()

C). Image()

D). new Image()

How do you draw an image at coordinates (200, 200) on the canvas with dimensions 300x200 pixels using drawImage?

A). drawImage(img, 200, 200, 300, 200)

B). drawImage(img, 0, 0, 300, 200)

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

D). drawImage(img, 100, 100, 300, 200)

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 (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 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