js cookie操作

//cookie操作3个方法 
 
 
 

   //设置cookie 
 
 
 

   function setCookie(name, value) { 
 
 
 

       var argv = setCookie.arguments; 
 
 
 

       var argc = setCookie.arguments.length; 
 
 
 

       var expires = (argc > 2) ? argv[2] : null; 
 
 
 

       if (expires != null) { 
 
 
 

           var LargeExpDate = new Date(); 
 
 
 

           LargeExpDate.setTime(LargeExpDate.getTime() + (expires * 1000 * 3600 * 24)); 
 
 
 

       } 
 
 
 

       document.cookie = name + "=" + escape(value) + ((expires == null) ? "" : ("; expires=" + LargeExpDate.toGMTString())); 
 
 
 

   } 
 
 
 

   //获取cookie 
 
 
 

   function getCookie(Name) { 
 
 
 

       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 
 
 
 

               return unescape(document.cookie.substring(offset, end)) 
 
 
 

           } 
 
 
 

           else return "" 
 
 
 

       } 
 
 
 

   } 
 
 
 

   //删除cookie 
 
 
 

   function deleteCookie(name) { 
 
 
 

       var expdate = new Date(); 
 
 
 

       expdate.setTime(expdate.getTime() - (86400 * 1000 * 1)); 
 
 
 

       setCookie(name, "", expdate); 
 
 
 

   }