level 3
天生好手☞
楼主
<!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 language="javascript" type="text/javascript">function validate(form) {var returnValue = ture;var selectedOption = form.selCards.selectedIndex;if (selectedOption==0)returnValue = false{alert("Please select a suit of cards.");}return returnValue;}</script></head>
<body><form name="frmCards" action="" method="get" onsubmit="return validate(this)"><select name="selCards" id="selCards"><option>Select a suit of cards</option><option value="hearts">Hearts</option><option value="diamonds">Diamonds</option><option value="spades">Spades</option><option value="clubs">Clubs</option></select><input type="submit" value="Send selection" /></form></body></html>
2013年06月09日 00点06分
1
<body><form name="frmCards" action="" method="get" onsubmit="return validate(this)"><select name="selCards" id="selCards"><option>Select a suit of cards</option><option value="hearts">Hearts</option><option value="diamonds">Diamonds</option><option value="spades">Spades</option><option value="clubs">Clubs</option></select><input type="submit" value="Send selection" /></form></body></html>
![[呵呵]](/static/emoticons/u5475u5475.png)
![[汗]](/static/emoticons/u6c57.png)
眼真毒