Js操作Cookie的代碼，代碼內有詳細注釋

Js操作Cookie的代碼，下邊的代碼內有詳細注釋，這里就不再多說了，直接上代碼：

/*
*設置與獲取Cookie
*/
var Cookie = {}
//寫入Cookie，key為鍵，value是值
//duration過期時間（天為單位，默認1天）
Cookie.write = function (key, value, duration)
{
Cookie.remove(key);
var d = new Date();
if (duration <= 0)
duration = 1;
d.setTime(d.getTime() + 1000 * 60 * 60 * 24 * duration);
document.cookie = key + "=" + encodeURI(value) + "; expires=" + d.toGMTString() + ";path=/";
};
//移除Cookie,key為鍵
Cookie.remove = function (key)
{
var d = new Date();
if (Cookie.read(key) != "")
{
d.setTime(d.getTime() - (86400 * 1000 * 1));
document.cookie = key + "=;expires=" + d.toGMTString();
}
};
//更多教程：Veryhuo.Com
//讀取Cookie，key是鍵
//不存在返回空字符串""
Cookie.read = function (key)
{
var arr = document.cookie.match(new RegExp("(^| )" + key + "=([^;]*)(;|$)"));
if (arr != null)
return decodeURIComponent(arr[2]);
return "";
};

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