Js保存信息到缓存中

var linkUrl = $(this).attr("link");
setCookie('linkUrl', linkUrl);
getCookie("linkUrl");
function setCookie(name, value)   {
var argv = setCookie.arguments;
var argc = setCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
if(expires!=null)   {
var LargeExpDate = new Date ();
LargeExpDate.setTime(LargeExpDate.getTime() + (expires*1000*3600*24));
}
document.cookie = name + "=" + escape (value)+((expires == null) ? "" : ("; expires=" +LargeExpDate.toGMTString()));
}
function getCookie(Name)   {
var search = Name + "="
if(document.cookie.length > 0)   {
offset = document.cookie.indexOf(search)
if(offset != -1)   {
offset += search.length
end = document.cookie.indexOf(";", offset)
if(end == -1) end = document.cookie.length
return unescape(document.cookie.substring(offset, end))
}
else return ""
}
}
function deleteCookie(name)
...{
var expdate = new Date();
expdate.setTime(expdate.getTime() - (86400 * 1000 * 1));
setCookie(name, "", expdate);
}