<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript" src="jquery-1.11.0.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#addline").click(function(){
var $tr=$("<tr></tr>");
var $td=$("<td></td>");
for(var i=0;i<4;i++){
$td.clone().html(i).appendTo($tr);
}
$("table tr:last").after($tr);
})
$("#removeline").click(function(){
$("table tr:last").remove();
})
$("#elptyAll").click(function(){
$("table").elpty();
})
})
</script>
</head>
<body>
<table border="1" width="500">
<tr>
<td>11</td>
<td>12</td>
<td>13</td>
<td>14</td>
</tr>
<tr>
<td>21</td>
<td>22</td>
<td>23</td>
<td>24</td>
</tr>
<tr>
<td>31</td>
<td>32</td>
<td>33</td>
<td>34</td>
</tr>
<tr>
<td>41</td>
<td>42</td>
<td>43</td>
<td>44</td>
</tr>
<tr>
<td>51</td>
<td>52</td>
<td>53</td>
<td>54</td>
</tr>
</table>
<input type="button" value="增加一行" id="addline"/>
<input type="button" value="删除一行" id="removeline"/>
<input type="button" value="清空" id="elptyAll" />
</body>
</html>
