js读写COOKIE实现记住帐号或密码的代码(js读写COOKIE)

js COOKIE 记住帐号或密码

function onLoginLoaded()
{
if(isPostBack == "False")
{
GetLastUser();
}
}
function GetLastUser()
{
var id = "49BAC005-7D5B-4231-8CEA-16939BEACD67";
var usr = GetCookie(id);
if(usr != null)
{
document.getElementById('txtUserName').value = usr;
}
else
{
document.getElementById('txtUserName').value = "001";
}
GetPwdAndChk();
}
//点击登录时触发客户端事件
function SetPwdAndChk()
{
//取用户名
var usr = document.getElementById('txtUserName').value;
alert(usr);
//将最后一个用户信息写入到Cookie
SetLastUser(usr);
//如果记住密码选项被选中
if(document.getElementById('chkRememberPwd').checked == true)
{
//取密码值
var pwd = document.getElementById('txtPassword').value;
alert(pwd);
var expdate = new Date();
expdate.setTime(expdate.getTime() + 14 * (24 * 60 * 60 * 1000));
//将用户名和密码写入到Cookie
SetCookie(usr,pwd, expdate);
}
else
{
//如果没有选中记住密码,则立即过期
ResetCookie();
}
}
function SetLastUser(usr)
{
var id = "49BAC005-7D5B-4231-8CEA-16939BEACD67";
var expdate = new Date();
//当前时间加上两周的时间
expdate.setTime(expdate.getTime() + 14 * (24 * 60 * 60 * 1000));
SetCookie(id, usr, expdate);
}
//用户名失去焦点时调用该方法
function GetPwdAndChk()
{
var usr = document.getElementById('txtUserName').value;
var pwd = GetCookie(usr);
if(pwd != null)
{
document.getElementById('chkRememberPwd').checked = true;
document.getElementById('txtPassword').value = pwd;
}
else
{
document.getElementById('chkRememberPwd').checked = false;
document.getElementById('txtPassword').value = "";
}
}
//取Cookie的值
function GetCookie (name)
{
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i ";
function getCookieVal (offset)
{
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
//写入到Cookie
function SetCookie(name, value, expires)
{
var argv = SetCookie.arguments;
//本例中length = 3
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
document.cookie = name + "=" + escape (value) +
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) +
((domain == null) ? "" : ("; domain=" + domain)) +
((secure == true) ? "; secure" : "");
}
function ResetCookie()
{
var usr = document.getElementById('txtUserName').value;
var expdate = new Date();
SetCookie(usr, null, expdate);
}

用户名:

密码：记住密码

[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

测试方法：加入先输入用户名jb51密码为 www.jb51.net，选择记住密码，然后关闭后，重新打开页面，在用户名里面输入jb51，则密码会自动输入密码。