Tryit Editor v2.7

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<script>
function changeContent(id, row, cell, content) {
    var x = document.getElementById(id).rows[row].cells;
    x[cell].innerHTML = content;
}
</script>

<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>
<table id="myTable" border="1">
<tr>
<td>Row1 cell1</td>
<td>Row1 cell2</td>
</tr>
<tr>
<td>Row2 cell1</td>
<td>Row2 cell2</td>
</tr>
<tr>
<td>Row3 cell1</td>
<td>Row3 cell2</td>
</tr>
</table>

<p>
<input type="button" onclick="changeContent('myTable', 0, 0, 'Hello')" value="Change content">
</p>

</body>
</html>