js写入cookie和读取cookie
2013-12-21 17:52:04   来源：   浏览： 次

//写入cookie
function writeCookie(name, value, hours)

{

var expire = "";

if(hours != null)

{

    expire = new Date((new Date()).getTime() + hours * 3600000);

    expire = "; expires=" + expire.toGMTString();

}

document.cookie = name + "=" + escape(value) + expire;

}

//读取cookie
function readCookie(name)

{

var cookieValue = "";

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;

      cookieValue = unescape(document.cookie.substring(offset, end))

    }

}

return cookieValue;

}