jquery table 的添加和删除

<script language="javascript" src="./jquery.js"></script>

<table border="1px #ooo" id="test" name="test" class="test" cellpadding="0" cellspacing="0" width="20%">

<tr id="1"><td width="30%">1</td><td width="30%">2</td><td width="30%">3</td></tr>

<tr id="2"><td width="30%">11</td><td width="30%">22</td><td width="30%">33</td></tr>

</table>

<table border="1px #ooo" id="test1" name="test1" cellpadding="0" cellspacing="0" width="20%">

<tr id="4"><td width="30%">1</td><td width="30%">2</td><td width="30%">3</td></tr>

</table>

<input type="button" name="button" value="add" οnclick="addtr('test');">

<input type="button" name="button" value="del" οnclick="deltr('test');">

<script>

//在id为test的table的最后增加一行

function addtr(id){

tr_id = $("#test>tbody>tr:last").attr("id");

tr_id++;

//alert(tr_id);

str = "<tr id = '"+tr_id+"'><td width='30%'>re1</td><td width='30%'>re2</td><td width='30%'>re3</td></tr>";

$('#'+id).append(str);

}

//删除id为test的table的最后一行

function deltr(id){

tr_id = $("#test>tbody>tr:last").attr("id");

$('#'+tr_id).remove();

}

</script>