<script type="text/javascript">
var i=r.parentNode.parentNode.rowIndex
document.getElementById('myTable').deleteRow(i)
<table id="myTable" border="1">
<td><input type="button" value="删除" onclick="deleteRow(this)"></td>
<td><input type="button" value="删除" onclick="deleteRow(this)"></td>
<td><input type="button" value="删除" onclick="deleteRow(this)"></td>