<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<table id="myTable">
<tr>
<td>Row 1, Col 1</td>
<td>Row 1, Col 2</td>
</tr>
<tr>
<td>Row 2, Col 1</td>
<td>Row 2, Col 2</td>
</tr>
</table>
<script>
var i,
table = document.getElementById('myTable'),
rows = table.getElementsByTagName('tr'),
cells;
// Iterate over each row
for (i = 0; i < rows.length; i++) {
// For each row, get the list of cells
cells = rows[i].getElementsByTagName('td');
// Iterate over the list of cells
for (j = 0; j < cells.length; j++) {
// Assign a new value to each cell
// For this example, I'm just prepending [i, j] (where i = row and j = col)
cells[j].innerHTML = "[" + i + ", " + j + "] " + cells[j].innerHTML;
}
}
</script>
</body>
</html>
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