Grid layout loop.

GridLayout.js

 for(var col:number = 0; col < this.NUM_COLUMNS; col++) {
    for(var row:number = 0; row < this.NUM_ROWS; row++) {
        console.log("col", col, "row", row);
    }
}

GridLayout.ts

var numGamePiece:number = this.NUM_COLUMNS * this.NUM_ROWS;
var item:createjs.DisplayObject;
for (var i:number = 0; i < numGamePiece; i++)
{
    item = ImageFactory.getRandomGamePiece();
    item.x = (i % this.NUM_COLUMNS) * (this.gamePieceWidth + this.H_SPACE);
    item.y = Math.floor(i / this.NUM_COLUMNS) * (this.gamePieceHeight + this.V_SPACE);

    item.scaleX = item.scaleY = scaleX;

    this._gamePiecesList.push(item);
    contianer.addChild(item);
}