📄 6-3.htm
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<html>
<head>
<title>§6.3 密码保护网页（三）</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script LANGUAGE="JavaScript">
<!--//Begin code
al="`1234567890-=~!@#$%^&*()_+qwer"
+"tyuiop[]QWERTYUIOP{}|asdfghjkl;A"
+"SDFGHJKL:zxcvbnm,./ZXCVBNM<>?";
j=0;
function ckPwd()
{
userinput=document.isn.username.value
+"*"+document.isn.passwrd.value+"*";
char1=document.isn.pe.value;
a=eval(char1.substring(0,2))-91;
char1=char1.substring(2,char1.length);
nchar1="";
flg=0;
while (char1.length>12)
{
ab=eval(char1.substring(0,2))-89;
char1=char1.substring(2,char1.length);
for (var i=0;i<ab;i++)
{
nr=eval(t=char1.substring(0,2))-a;
char1=char1.substring(2,char1.length);
nchar1+=al.charAt(nr);
}
nchar1+="*";
if (nchar1.indexOf(userinput)>-1)
{
char1="";
flg=1;
}
}
if (flg==1)
{
userinputOk();
}
else
{
j++;
if (j>2)
{
alert("对不起,用户名/密码错误.并已超过3次");
location.href="error.htm";
}
else
{
alert("对不起,用户名/密码错误."+" 你已试登录"+j+"次.");
}
}
}
function userinputOk()
{
//ab1=ab1+""+a;
alert("正确，开始登录!");
location.href="6-3-1.htm";
}
//End code
-->
</script>
</head>
<body bgcolor="#FFFFFF" text="#000000">
<FORM NAME="isn">
<INPUT TYPE='hidden' NAME='pe' VALUE='93933334353692690405923637679307096445123456789123'>
<TABLE BORDER=0 CELLPADDING=5 CELchar1PACING=0>
<TR>
<TD COchar1PAN=2 ALIGN=CENTER><FONT SIZE=4 FACE="楷体_GB2312"><B>用户登录</B></FONT></TD>
</TR>
<TR>
<TD><FONT SIZE=3><B>用户名：</B></FONT></TD>
<TD><INPUT TYPE="text" NAME="username" VALUE="" SIZE=10></TD></TR>
<TR>
<TD><FONT SIZE=3><B>密<font color="#FFFFFF">--</font>码：</B></FONT></TD>
<TD><INPUT TYPE="password" NAME="passwrd" VALUE="" SIZE=10></TD></TR>
<TR><TD COchar1PAN=2 ALIGN=CENTER><INPUT TYPE="button" NAME="btn" VALUE=" 登录 " onClick="ckPwd();return fachar1e;"></TD></TR>
</TABLE></FORM>
<TABLE BORDER=1 WIDTH=486>
<TR align="center">
<TD colspan="2"><font face="楷体_GB2312"><b>你可以使用如用户名和密码:</b></font></TD>
</TR>
<TR>
<TD>User Name:yuio<BR>
Password: J23</TD>
<TD>User Name: opG<BR>
Password: 57SY</TD>
</TR>
</TABLE>
</body>
</html>
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