W3School TIY
编辑您的代码：
<html> <head> <script type="text/javascript"> function alignCell() { document.getElementById('td1').align="right" } </script> </head> <body> <table border="1"> <tr> <th>-----名-----</th> <th>-----姓-----</th> </tr> <tr> <td id="td1">John</td> <td>Adams</td> </tr> </table> <form> <input type="button" onclick="alignCell()" value="对齐 'John' 单元格" /> </form> </body> </html>
查看结果: