javascript table delete row

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<html>
<head>
<script type="text/javascript">
function deleteRow(i){
    document.getElementById('myTable').deleteRow(i)
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
  <td>Row 1</td>
  <td><input type="button" value="Delete" onclick="deleteRow(this.parentNode.parentNode.rowIndex)" /></td>
</tr>
<tr>
  <td>Row 2</td>
  <td><input type="button" value="Delete" onclick="deleteRow(this.parentNode.parentNode.rowIndex)" /></td>
</tr>
<tr>
  <td>Row 3</td>
  <td><input type="button" value="Delete" onclick="deleteRow(this.parentNode.parentNode.rowIndex)" /></td>
</tr>
</table>
</body></html>

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