源代码:
<!DOCTYPE html> <html> <head> <script> function leftAlign() { document.getElementById('header').align="left"; } </script> </head> <body> <table width="100%" border="1"> <tr id="header"> <th>Firstname</th> <th>Lastname</th> </tr> <tr> <td>Peter</td> <td>Griffin</td> </tr> </table> <br> <input type="button" onclick="leftAlign()" value="Left-align table row" /> <p><b>Note:</b> This example does not work in Internet Explorer.</p> </body> </html>
运行结果：