js 操作 cookie

var Cookie={get:function(name){var value='',matchs;if(matchs=document.cookie.match("(?:^| )"+name+"(?:(?:=([^;]*))|;|$)"))value=matchs[1]?unescape(matchs[1]):"";return value},set:function(name,value,expire,domain){expire=expire||30*24*3600*1000;var date=new Date(),cookie="";date.setTime(date.getTime()+expire);cookie=name+"="+escape(value)+";expires="+date.toGMTString()+";path=/;";domain&&(cookie+="domain="+domain+";");document.cookie=cookie},del:function(name,domain){Cookie.set(name,'',-1,domain)}};