js读写COOKIE实现记住帐号或密码的代码(js读写COOKIE)

<title>
<a style="color:#f60; text-decoration:underline;" title="js" href="https://m.php.cn/zt/15802.html" target="_blank">js</a> COOKIE 记住帐号或密码</title>
<script language="javascript" type="text/javascript"> 
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(); 
} 
//&#28857;&#20987;&#30331;&#24405;&#26102;&#35302;&#21457;&#23458;&#25143;&#31471;&#20107;&#20214; 
function SetPwdAndChk() 
{ 
//&#21462;&#29992;&#25143;&#21517; 
var usr = document.getElementById('txtUserName').value; 
alert(usr); 
//&#23558;&#26368;&#21518;&#19968;&#20010;&#29992;&#25143;&#20449;&#24687;&#20889;&#20837;&#21040;Cookie 
SetLastUser(usr); 
//&#22914;&#26524;&#35760;&#20303;&#23494;&#30721;&#36873;&#39033;&#34987;&#36873;&#20013; 
if(document.getElementById('chkRememberPwd').checked == true) 
{ 
//&#21462;&#23494;&#30721;&#20540; 
var pwd = document.getElementById('txtPassword').value; 
alert(pwd); 
var expdate = new Date(); 
expdate.setTime(expdate.getTime() + 14 * (24 * 60 * 60 * 1000)); 
//&#23558;&#29992;&#25143;&#21517;&#21644;&#23494;&#30721;&#20889;&#20837;&#21040;Cookie 
SetCookie(usr,pwd, expdate); 
} 
else 
{ 
//&#22914;&#26524;&#27809;&#26377;&#36873;&#20013;&#35760;&#20303;&#23494;&#30721;,&#21017;&#31435;&#21363;&#36807;&#26399; 
ResetCookie(); 
} 
} 
function SetLastUser(usr) 
{ 
var id = "49BAC005-7D5B-4231-8CEA-16939BEACD67"; 
var expdate = new Date(); 
//&#24403;&#21069;&#26102;&#38388;&#21152;&#19978;&#20004;&#21608;&#30340;&#26102;&#38388; 
expdate.setTime(expdate.getTime() + 14 * (24 * 60 * 60 * 1000)); 
SetCookie(id, usr, expdate); 
} 
//&#29992;&#25143;&#21517;&#22833;&#21435;&#28966;&#28857;&#26102;&#35843;&#29992;&#35813;&#26041;&#27861; 
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 = ""; 
} 
} 
//&#21462;Cookie&#30340;&#20540; 
function GetCookie (name) 
{ 
var arg = name + "="; 
var alen = arg.length; 
var clen = document.<a style="color:#f60; text-decoration:underline;" title= "cookie"href="https://m.php.cn/zt/16004.html" target="_blank">cookie.length; 
var i = 0; 
while (i < clen) 
{ 
var j = i + alen; 
//alert(j); 
if (document.cookie.substring(i, j) == arg) 
return getCookieVal (j); 
i = document.cookie.indexOf(" ", i) + 1; 
if (i == 0) break; 
} 
return null; 
} 
var isPostBack = "<%= IsPostBack %>"; 
function getCookieVal (offset) 
{ 
var endstr = document.cookie.indexOf (";", offset); 
if (endstr == -1) 
endstr = document.cookie.length; 
return unescape(document.cookie.substring(offset, endstr)); 
} 
//&#20889;&#20837;&#21040;Cookie 
function SetCookie(name, value, expires) 
{ 
var argv = SetCookie.arguments; 
//&#26412;&#20363;&#20013;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); 
} 
</script><form id="form1"> 
<div> 
用户名:<input type="text" id="txtUserName" onblur="GetPwdAndChk()"><input type="password" id="txtPassword"> 
密码：<input type="checkbox" id="chkRememberPwd">记住密码 
<input type="button" onclick="SetPwdAndChk()" value="进入">
</div> 
</form> 
 
 
<br><input onclick="runEx('runcode33198')" type="button" value="运行代码"><input onclick="doCopy('runcode33198')" type="button" value="复制代码"><input onclick="doSave(runcode33198)" type="button" value="保存代码">[Ctrl+A 全选 注:<a href="http://www.jb51.net/article/23421.htm" title="查看具体详情" target="_blank">如需引入外部Js需刷新才能执行</a>]<br>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。

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js读写COOKIE实现记住帐号或密码的代码(js读写COOKIE)_javascript技巧