一天一个js（十）cookie操作，写cookie，读取cookie，删除cookie

一天一个js（10）cookie操作，写cookie，读取cookie，删除cookie

//写Cookie参数：CKname是cookie名称(必填),CKvalue是cookie值(必填),duration是过期时间(默认为关闭浏览器),CKpath是可访问cookie的目录(默认为所有页面),CKdomain是可访问cookie的主机名(默认为当前域名下[子域名]);function setCookie(CKname,CKvalue,duration,CKpath,CKdomain){var NewDate = new Date();NewDate.setTime(NewDate.getTime()+duration*24*60*60*1000);document.cookie = CKname+"="+escape(CKvalue)+(duration?";expires="+NewDate.toGMTString():"")+(CKpath?";path="+CKpath:"")+(CKdomain?";domain="+CKdomain:"");};//读取指定名称的cookiefunction getcookie(CKname){var arrCookie = document.cookie.match(new RegExp("(^| )"+CKname+"=([^;]*)(;|$)"));if(arrCookie!=null){return unescape(arrCookie[2]);}else{return null;};};//删除指定名称的cookiefunction deleteCookie(CKname){document.cookie = CKname+"=;expires="+(new Date(0)).toGMTString();};