const alphabet = 'abcdefgh' let squares = document.getElementsByClassName("square") let board = [ [0, 0, 0, 0, 0, 0, 0, 0], [-1, -1, -1, -1, -1, -1, -1, -1], [0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0], [1, 1, 1, 1, 1, 1, 1, 1], [0, 0, 0, 0, 0, 0, 0, 0], ] for (let i = 0; i < 8; i++) { for (let j = 0; j < 8; j++) { let square = document.getElementById(`${alphabet.charAt(j)}${i + 1}`) let piece = document.createElement("p") switch (board[i][j]) { case 1: piece.classList.add("wp") square.append(piece) piece.append("p") break case -1: piece.classList.add("bp") square.append(piece) piece.append("p") break } } } for (let i = 0; i < squares.length; i++) { }