Javascript Basics (Khan Academy)

What is at the end of a line of code?

• #
• ;
• )
• >

What command draws a rectangle?

• rec (10, 20, 100, 200);
• rect (10, 20, 100, 200)
• rect (10, 20, 100, 200);
• ellipse (10, 20, 40, 40)

The x and y parameters for ellipses and rectangles control the shape's

• position

• size

• radius

• color

The x and y parameters of an ellipse control the position of the shape's

• centerpoint

• top left corner

• top right corner

• radius

The x and y parameters of a rectangle control the position of the shape's

• centerpoint

• top left corner

• top right corner

• radius

The point (0, 0) on the Khan Academy JS canvas is located at the

• top right corner

• top left corner

• bottom right corner

• bottom left corner

What command draws a perfect circle?

• ellipse (80, 60, 100, 105);
• ellipse(80, 60, 100, 100);
• circle (80, 60, 80, 60):
• ellipse (80, 60, 105, 100);

The (x, y, w, h) in a command are called "parameters".

• True

• False

The 'X' parameter

• moves the object left and right

• moves the objectup and down

• changes with width

• changes the height

The 'Y' parameter

• moves the object left and right

• moves the object up and down

• makes the object wider or thinner

• makes the object taller or smaller