html 注册表单判断语句怎么加
如题啊.毕业论文需要请高手指导判断1-用户名不能为空,2-密码要一致才能注册3-邮箱要有@符号万分感谢!<formaction="userlogin.asp"method...
如题啊.毕业论文需要 请高手指导
判断
1-用户名不能为空 ,
2-密码要一致才能注册
3-邮箱要有@符号
万分感谢!
<form action="userlogin.asp" method="post" name="form1">
<table width="48%" height="334" border="0" align="center" cellspacing="0">
<tr bordercolor="#FFCC00" bgcolor="#FFFFFF">
<td height="56" colspan="2"><img src="pic/log1.png" width="151" height="52" /></td>
</tr>
<tr bordercolor="#FFCC00" bgcolor="#FFFFFF">
<td width="76" height="52"><div align="center"></div></td>
<td width="402"><p class="style6 STYLE2">用户注册
</td>
</tr>
<tr bordercolor="#FFCC00" bgcolor="#FFFFFF">
<td> </td>
<td><table width="380" border="1" cellspacing="0">
<tr>
<td width="374" height="208"><p align="center" class="style8">填写注册信息</p>
<p align="center" class="style10">用户名:
<input name="username" type="text" size="20" />
</p>
<p align="center" class="style15">支持大小写字母、数字或符号</p>
<p align="center" class="style10">密 码:
<input name="password1" type="password" size="20" />
</p>
<p align="center" class="style15">密码支持A-Z,a-z,0-9等字符</p>
<p align="center" class="style10">确认密码:
<input name="password2" type="password" size="20" />
</p>
<p align="center" class="style15">密码与确认密码输入一致</p>
<p align="center" class="style10">E-mail:
<input name="email" type="text" size="20" />
</p>
<p align="center" class="style15">您的电子邮箱</p>
<p align="center" class="style15"> <input type="submit" name="Submit" value="提交" />
<input type="reset" name="Submit2" value="重置" />
</p></td>
</tr>
</table>
</td>
</tr>
<tr bordercolor="#FFCC00">
<td colspan="2"><div align="center"></div> 展开
判断
1-用户名不能为空 ,
2-密码要一致才能注册
3-邮箱要有@符号
万分感谢!
<form action="userlogin.asp" method="post" name="form1">
<table width="48%" height="334" border="0" align="center" cellspacing="0">
<tr bordercolor="#FFCC00" bgcolor="#FFFFFF">
<td height="56" colspan="2"><img src="pic/log1.png" width="151" height="52" /></td>
</tr>
<tr bordercolor="#FFCC00" bgcolor="#FFFFFF">
<td width="76" height="52"><div align="center"></div></td>
<td width="402"><p class="style6 STYLE2">用户注册
</td>
</tr>
<tr bordercolor="#FFCC00" bgcolor="#FFFFFF">
<td> </td>
<td><table width="380" border="1" cellspacing="0">
<tr>
<td width="374" height="208"><p align="center" class="style8">填写注册信息</p>
<p align="center" class="style10">用户名:
<input name="username" type="text" size="20" />
</p>
<p align="center" class="style15">支持大小写字母、数字或符号</p>
<p align="center" class="style10">密 码:
<input name="password1" type="password" size="20" />
</p>
<p align="center" class="style15">密码支持A-Z,a-z,0-9等字符</p>
<p align="center" class="style10">确认密码:
<input name="password2" type="password" size="20" />
</p>
<p align="center" class="style15">密码与确认密码输入一致</p>
<p align="center" class="style10">E-mail:
<input name="email" type="text" size="20" />
</p>
<p align="center" class="style15">您的电子邮箱</p>
<p align="center" class="style15"> <input type="submit" name="Submit" value="提交" />
<input type="reset" name="Submit2" value="重置" />
</p></td>
</tr>
</table>
</td>
</tr>
<tr bordercolor="#FFCC00">
<td colspan="2"><div align="center"></div> 展开
展开全部
javascript来验证吧,下面的代码内容比较简单,但是方法基本上相同。具体的还是你自己来写吧
<html>
<head>
<script language="javascript">
function checkpwd()
{
var p0=document.form1.opwd.value;
var p1=document.form1.npwd1.value;
var p2=document.form1.npwd2.value;
if(p1!=p2)
{
alert("新密码两次输入不一致");
return false;
}
if(p2==p0)
{
alert("新密码和旧密码不能完全相同");
return false;
}
}
</script>
</head>
<body>
<div>
<form name="form1">
<p>旧密码:<input type="text" id="opwd" /></p>
<p>新密码:<input type="text" id="npwd1" /></p>
<p>新密码:<input type="text" id="npwd2" onchange="checkpwd()" /></p>
</form>
</div>
</body>
</html>
<html>
<head>
<script language="javascript">
function checkpwd()
{
var p0=document.form1.opwd.value;
var p1=document.form1.npwd1.value;
var p2=document.form1.npwd2.value;
if(p1!=p2)
{
alert("新密码两次输入不一致");
return false;
}
if(p2==p0)
{
alert("新密码和旧密码不能完全相同");
return false;
}
}
</script>
</head>
<body>
<div>
<form name="form1">
<p>旧密码:<input type="text" id="opwd" /></p>
<p>新密码:<input type="text" id="npwd1" /></p>
<p>新密码:<input type="text" id="npwd2" onchange="checkpwd()" /></p>
</form>
</div>
</body>
</html>
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