<!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>