发布于 2016-09-07 12:56:48 | 64 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Javascript教程，程序狗速度看过来！
JavaScript客户端脚本语言
Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。
<%@ page contentType="text/html; charset=gb2312" language="java"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>用户注册</title>
<script language="javascript">
function IsDigit(cCheck)
{
return (('0'<=cCheck) && (cCheck<='9'));
}
function IsAlpha(cCheck)
{
return ((('a'<=cCheck) && (cCheck<='z')) || (('A'<=cCheck) && (cCheck<='Z')))
}
function IsValid()
{
var struserName = reg.UserName.value;
for (nIndex=0; nIndex<struserName.length; nIndex++)
{
cCheck = struserName.charAt(nIndex);
if (!(IsDigit(cCheck) || IsAlpha(cCheck)))
{
return false;
}
}
return true;
}
function chkEmail(str)
{
return str.search(/[\w\-]{1,}@[\w\-]{1,}\.[\w\-]{1,}/)==0?true:false
}
function docheck()
{
if(reg.UserName.value=="")
{
alert("请填写用户名");
return false;
}
else if(!IsValid())
{
alert("用户名只能使用字母和数字");
return false;
}
else if(reg.UserPassword.value=="")
{
alert("请填写密码");
return false;
}
else if(reg.UserPassword.value != reg.CUserPassword.value)
{
alert("两次密码不一致");
return false;
}
else if(reg.NickName.value =="")
{
alert("请填写昵称");
return false;
}
else if(reg.Email.value =="")
{
alert("请填写邮箱");
return false;
}
else if(!chkEmail(reg.Email.value))
{
alert("请填写有效的Email地址");
return false;
}
else
{
return true;
}
}
</script>
<STYLE type=text/css>
td, th {
font-family: Arial, Helvetica, sans-serif;
font-size: 14px;
line-height: 24px;
color: #333333;
}
</STYLE>
</head>
<body>
<h1 align="center">用户注册</h1>
<div align="center">
<form name="reg" action="user_add.jsp" method="post" target="_self" onSubmit="return docheck()">
<table width="90%" border="0">
<tr>
<td width="50%" align="right" height="25"><font face="Arial, Helvetica, sans-serif">请输入要注册的用户名：</font></td>
<td width="50%" align="left" height="25">
<input type="text" name="UserName">
<br>
<font color="red"> 用户名只能由字母和数字组成</font>
</td>
</tr>
<tr>
<td width="50%" align="right" height="25">请输入密码：</td>
<td width="50%" align="left" height="25"> <input type="password" name="UserPassword"></td>
</tr>
<tr>
<td width="50%" align="right" height="25">请输入确认密码：</td>
<td width="50%" align="left" height="25"> <input type="password" name="CUserPassword"></td>
</tr>
<tr>
<td width="50%" align="right" height="25">请输入昵称：</td>
<td width="50%" align="left" height="25"> <input type="text" name="NickName"></td>
</tr>
<tr>
<td width="50%" align="right" height="25">请选择性别：</td>
<td width="50%" align="left" height="25"> <input type="radio" name="Sex" value="0" checked>男 <input type="radio" name="Sex" value="1">女</td>
</tr>
<tr>
<td width="50%" align="right" height="25">请输入Email地址：</td>
<td width="50%" align="left" height="25"> <input type="text" name="Email"></td>
</tr>
</table>
<p>
<input type="submit" name="sub" value="注册">
<input type="reset" name="res" value="重填">
</p>
</form>
</div>
</body>
</html>