EaselJS - 上面的对象

Question

我的舞台上有2个物体，我想要一个B物体上方的物体（现在是A上面的B）。

function init() {
    // create stage and point it to the canvas:
    canvas = document.getElementById("testCanvas");
    stage = new createjs.Stage(canvas);

    // enable touch interactions if supported on the current device:
    createjs.Touch.enable(stage);

    // enabled mouse over / out events
    stage.enableMouseOver(10);
    stage.mouseMoveOutside = true; // keep tracking the mouse even when it leaves the canvas

    // load the source image:
    var image = new Image();
    image.src = "ball.png";
    image.onload = handleImageLoad;

    var image2 = new Image();
    image2.src = "open-box.png";
    image2.onload = destination;
}

• var image = A
• var image2 = B