js如何保存、获取、删除cookie

 

好久没搞js了，现在加强一下。下面是如何保存、获取、删除cookie的方法。

 

 

 function setcookie(name,value,time)//设置cookie,name:cookie名,value:cookie值,time:保存时间单位天 { var date=new Date(); if(time>0) date.setTime(date.getTime()+24*60*60*1000*time);//javascript是以毫秒为单位的 document.cookie=name+"="+escape(value)+";expires="+date.toGMTString()+";secure"; } function getcookie(name)//获取cookie,name:cookie名 { var value=""; if(name!=""&&name!=null) { var Name=name+"="; if(document.cookie.length>0) { offset = document.cookie.indexOf(Name); offset += Name.length; end = document.cookie.indexOf(";", offset); if (offset != -1); end=document.cookie.length; value=unescape(document.cookie.substring(offset,end)); } } return value; } function delcookie(name)//删除cookie,name:cookie名 { var time = new Date(); //当前时间 time.setTime(time.getTime() - 1); var val=getcookie(name); if(val!=null&&val!="") document.cookie= name + "="+val+";expires="+time.toGMTStrin