How to delete all rows from Table except First row using JavaScript | Javascript.

<table id="myTable" border="0" cellpadding="0" cellspacing="0">
    <tbody>
        <tr>
            <th></th>
            <th></th>
            <th></th>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td></td>
        </tr>
      
    </tbody>
</table>

<input type="button" id="" value="Delete Rows" onclick="DeleteRows()" />

<script type="text/javascript">
    function DeleteRows() {
        var rowCount = myTable.rows.length;
        for (var i = rowCount - 1; i > 0; i--) {
            myTable.deleteRow(i);
        }
    }
</script>