网页添加访问密码

在前加入如下代码

<SCRIPT language=JavaScript> 
function password() { 
var testV = 1; 
var pass1 = prompt('请输入密码:',''); 
while (testV < 3) { 
if (!pass1) 
history.go(-1); 
if (pass1 == "这里输入你想设置的密码") { 
alert('密码正确!'); 
break; 
tV+=-1; 
var pass1 = prompt('密码错误!请重新输入:'); 
} 
if (pass1!="password" & testV ==3) 
history.go(-1); 
return " ";
} 
document.write(password()); 
</SCRIPT>