JSFiddle - React, Tailwind, and code Playground

JavaScript

var piecesArray = [];
function initPieces(){
  for (var i = 0; i<8; i++) {
    var piece = new Image();

    piece.tempX = i*50 + 5;
    piece.x = i*50 + 5;
    piece.y = 5;

   // piece.src = "images/piece.png";

    piecesArray.push(piece);

      alert(i + ": x = " + piecesArray[i].x + "   tempX = " + piecesArray[i].tempX);
  }
}
initPieces();