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PORetrieving Incorrect Table Coordinates
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  1. PORetrieving Incorrect Table Coordinates
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    copied!<p>I created a checkers board using tables. I want to retrieve the x and y coordinates of a cell. However, the <code>this.parentNode.rowIndex</code> keeps giving me -1. I've spent countless hours looking for the error. Can anyone find it for me?</p> <pre><code>var board = [[1, 0, 1, 0, 1, 0, 1, 0], [0, 1, 0, 1, 0, 1, 0, 1], [1, 0, 1, 0, 1, 0, 1, 0], [0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0], [0, -1, 0, -1, 0, -1, 0, -1], [-1, 0, -1, 0, -1, 0, -1, 0], [0, -1, 0, -1, 0, -1, 0, -1]]; var gray = -1; //distinguishing players var red = 1; function makeBoard() { //create a table var tbl = document.createElement("table"); //create a &lt;tr&gt; for each row for (var i = 0; i &lt; 8; i++) { var tr = document.createElement("tr"); //create a &lt;td&gt; for each column for (var j = 0; j &lt; 8; j++) { var td = document.createElement("td"); //setting the attributes of a square td.setAttribute("width", "50"); td.setAttribute("height", "50"); if ((i % 2 == 0 &amp;&amp; j % 2 != 0) || (i % 2 !=0 &amp;&amp; j % 2 == 0)) { td.style.backgroundColor = "black"; } else if (board[i][j] == red) { td.style.backgroundColor = "red"; } else if (board[i][j] == gray) { td.style.backgroundColor = "gray"; } td.onclick = function() { alert(this.cellIndex + ", " + this.parentNode.rowIndex); //RETRIEVING WRONG COORDINATES } tr.appendChild(td); } tbl.appendChild(tr); } tbl.setAttribute("border", "10"); return tbl; } </code></pre> <p>If you feel that something is missing, please let me know.</p>
 

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