Tryit Editor v2.7

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<style>
table, td {
    border: 1px solid black;
}
</style>

<script>
var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "//hm.baidu.com/hm.js?73c27e26f610eb3c9f3feb0c75b03925";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
</script>
</head>
<body>

<p>Click on each td element to alert its position in the table row.</p>

<table>
  <tr>
    <td onclick="myFunction(this)">Click to show cellIndex</td>
    <td onclick="myFunction(this)">Click to show cellIndex</td>
    <td onclick="myFunction(this)">Click to show cellIndex</td>
    <td onclick="myFunction(this)">Click to show cellIndex</td>
  </tr>
</table>

<script>
function myFunction(x) {
    alert("Cell index is: " + x.cellIndex);
}
</script>

</body>
</html>