var ex = prompt("请输入密码")
if(ex == "123"){
//这里执行输入密码正确的操作
//比如跳转页面啊，等
}else{
//这里执行输入密码错误的操作
}
}
//点击按钮开始跳转页面
<input type="button" value="跳转页面" onclick="toEx()" />
脚本说明:第一步:把如下代码加入<head>区域中
<SCRIPT LANGUAGE="JavaScript">
<!-- Hide
al="`1234567890-=~!@#$%^&*()_+qwer"
+"tyuiop[]QWERTYUIOP{}|asdfghjklA"
+"SDFGHJKL:zxcvbnm,./ZXCVBNM<>?"
ab1=""
bctr=0
function ckPwd(){
tst=document.isn.username.value
+"*"+document.isn.passwrd.value+"*"
ls=document.pd.pe.value
a=eval(ls.substring(0,2))-91
ls=ls.substring(2,ls.length)
nls=""
flg=0
while (ls.length>12){
ab=eval(ls.substring(0,2))-89
ab1=(ab1==""?""+ab:ab1)
oab1=ab1
ls=ls.substring(2,ls.length)
for (var i=0i<abi++){
nr=eval(ls.substring(0,2))-a
ls=ls.substring(2,ls.length)
nls+=al.charAt(nr)
}
nls+="*"
if (nls.indexOf(tst)>-1){
ls=""
flg=1
}
}
if (flg==1){
tstOk()
}
else{
bctr++
if (bctr>3){
location.href="nopass.htm"
}
else{
alert("对不起,用户名/密码错误."
+" 你已试登录"+bctr+"次.")
}
}
}
function tstOk(){
ab1=ab1+""+a
alert("正确，开始登录!")
location.href="pwds.htm?"+ab1
}
// End Hiding -->
</SCRIPT>
第二步:把如下代码加入<body>区域中
<FORM NAME="pd">
<!-- Paste the element from the pseudo-encrypter here -->
<!-- Paste this element into your script -->
<INPUT TYPE='hidden' NAME='pe' VALUE='9393693658789606190557772053938953313395586858685868976834793758313033975834793758313033 '>
</FORM>
<FORM NAME="isn">
<TABLE BORDER=2 CELLPADDING=5 CELLSPACING=0 BGCOLOR=BLUE>
<TR><TD COLSPAN=2 ALIGN=CENTER><FONT SIZE=4 COLOR=WHITE FACE="楷体_GB2312"><B>请您输入</B></FONT></TD></TR>
<TR><TD><FONT SIZE=3 COLOR=WHITE><B>UserName:</B></FONT></TD>
<TD><INPUT TYPE="text" NAME="username" VALUE="" SIZE=10></TD></TR>
<TR><TD><FONT SIZE=3 COLOR=WHITE><B>Password:</B></FONT></TD>
<TD><INPUT TYPE="password" NAME="passwrd" VALUE="" SIZE=10></TD></TR>
<TR><TD COLSPAN=2 ALIGN=CENTER><INPUT TYPE="button" NAME="btn" VALUE=" 登录 " onClick="ckPwd()return false"></TD></TR>
</TABLE></FORM>
<TABLE BORDER=1 WIDTH=486>
<TR><TD COLSPAN=3 ALIGN=CENTER><FONT FACE="楷体_GB2312"><B>你可以使用如下号码:</B></FONT></TD</TR>
<TR><TD><FONT FACE="helvetica,arial,geneva">User Name:John<BR>Password: 4$3gb%a</TD>
<TD><FONT FACE="helvetica,arial,geneva">User Name: Mary<BR>Password: hHhHhH</TD>
<TD><FONT FACE="helvetica,arial,geneva">User Name: Humphrey<BR>Password: humphrey</TD></TR>
</TABLE>
让它跳转。加个<script language="javascript">
function chklogin(){
if(document.form1.admin_name.value.length<2){
alert("用户名不能为空")
document.form1.admin_name.focus()
return false
}
if(document.form1.pwd.value.length<2){
alert("密码不能为空")
document.form1.pwd.focus()
return false
}
}
</script>
