<body >
<input id="delrow" type="button" value="删除表格最后一行" onclick="delrow();"/>
<input id="delcell" type="button" value="删除最后一行最后一格" onclick="delcell();"/><br />
删除第<input id="row" type="text" size="2" />行,
第<input id="cel" type="text" size="2" />列
<input id="chg" type="button" value="删除" onclick="change()"/>
<table id="test" border="1" style="width:500px ;">
<caption> java</caption>
<tr>
<td>1</td>
<td>2</td>
</tr>
<tr>
<td>3</td>
<td>4</td>
</tr>
<tr>
<td>5</td>
<td>6</td>
</tr>
</table>
<script>
var tab = document.getElementById("test");
var delrow = function(){
if (tab.rows.length >0){
tab.deleteRow(tab.rows.length-1);
}
}
var delcell = function(){
var rowList = tab.rows;
var lastRow = rowList.item(rowList.length-1);
if (lastRow.cells.length >0){
lastRow.deleteCell(lastRow.cells.length -1);
}
}
var change = function(){
var tb = document.getElementById("test");
var row = document.getElementById('row').value;
row = parseInt(row);
if (isNaN(row)){
alert("请输入行整数");
return false;
}
var cel = document.getElementById('cel').value;
cel = parseInt(cel);
if (isNaN(cel)){
alert("请输入列整数");
return false;
}
if (row > tb.rows.length || cel> tb.rows[row-1].cells.length){
alert("要删除的不在");
return false;
}
tb.rows[row-1].deleteCell(cel-1);
}
</script>
</body>
