Base EaselJS Fiddle
Sets up a canvas, stage, and tick
HTML
<canvas id="canvas" width="800" height="600"></canvas>
JavaScript
var stage = new createjs.Stage("canvas");
var shape = new createjs.Shape(new createjs.Graphics().f("#f00").dc(0,0,100)).set({x:100,y:100});
stage.addChild(shape);
stage.update();
shape.addEventListener("click", function(){
//Shape will now disappear quickly. I would like it to fade out, by tweening its alpha or opacity or something. Any help would be greatly appreciated!
stage.removeChild(shape);
stage.update();
});