JavaScript Question of the Day March 20, 2025

What does the following program do?

let elem;
let ball;

function main() {
    keyDownMethod(keyDown);
    mouseMoveMethod(select);
    addCircle();
}

function keyDown(e) {
    if (e.key == "g") {
        ball.setColor(Randomizer.nextColor());
    }
}

function select(e) {
    ball = getElementAt(e.getX(), e.getY());
}

function addCircle() {
    let ball = new Circle(40);
    ball.setPosition(getWidth() / 2 - 100, getHeight() / 2);
    add(ball);

    let ball = new Circle(40);
    ball.setPosition(getWidth() / 2 + 100, getHeight() / 2);
    add(ball);
}

main();

1. Correct Answer
   Incorrect Answer
   a

   The program adds two circles to the canvas and changes both of their colors whenever the user presses the key g

2. Correct Answer
   Incorrect Answer
   b

   The program adds two circles to the canvas and changes the color of one of the circles whenever the user presses the key g while hovering over the circle

3. Correct Answer
   Incorrect Answer
   c

   The program adds two circles to the canvas and changes both of their positions in the direction of the mouse cursor whenever the user presses the key g

4. Correct Answer
   Incorrect Answer
   d

   The program adds a circle with a random color whenever the user presses the key g