如何用js向cookie中保存数据，取数据。

Question

如题所述

Answer 1

可以使用jquery.cookie.js扩展包，先到网络上下载好
使用方法：
前后html省略
<script src="/js/jquery.cookie.js"></script>
<script>
//设置cookie
//test为键名，1为键值，第三个参数是失效时间
$.cookie("test", "1", { expires: 7 }); // 存储一个带7天期限的 cookie
//读取cookie
$.cookie("test");
//删除cookie
$.cookie("test", "1", { expires: -1 }); //设置过期时间为负就失效了
</script>

Answer 2

用js向cookie中保存数据、获取数据的方法如下：
function GetCookieVal(offset)
//获得Cookie解码后的值
{
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}

//---------------------------
function SetCookie(name, value)
//设定Cookie值
{
var expdate = new Date();
var argv = SetCookie.arguments;
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;
if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 ));
document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString()))
+((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
+((secure == true) ? "; secure" : "");
}

//---------------------------------
function DelCookie(name)
//删除Cookie
{
var exp = new Date();
exp.setTime (exp.getTime() - 1);
var cval = GetCookie (name);
document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString();
}

//------------------------------------
function GetCookie(name)
//获得Cookie的原始值
{
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen)
{
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return GetCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}

SetCookie("username1",99);
alert(GetCookie("username1"));本回答被网友采纳

Answer 3

http://hi.baidu.com/yeelov/blog/item/3795b83859effcc6d462251b.html本回答被网友采纳

Answer 4

可以采用AJAX进行尝试。不知道你用什么开发语言。请标明语言后进行追问。