JS设置/读取cookies

/** * 设置cookies */function setCookie(c_name,value,expiredays){    var exdate=new Date()    exdate.setDate(exdate.getDate()+expiredays)    document.cookie=c_name+ "=" +escape(value)+    ((expiredays==null) ? "" : ";expires="+exdate.toGMTString())}/** * 获取cookies */function getCookie(c_name){    if (document.cookie.length>0)    {        c_start=document.cookie.indexOf(c_name + "=")        if (c_start!=-1)        {            c_start=c_start + c_name.length+1            c_end=document.cookie.indexOf(";",c_start)            if (c_end==-1) c_end=document.cookie.length            return unescape(document.cookie.substring(c_start,c_end))        }    }    return "";}

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