<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 == "12345") {
alert('密码正确!');
break;
}
testV += -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>