cookie的封装

function  setCookie(name,value,iDay){

if(iDay){

      varoDate=newDate();

      oDate.setDate(oDate.getDate()+iDay);

      document.cookie=name+'='+value+';path=/;expires='+oDate;

}else{

      document.cookie=name+'='+value+';path=/;';

}

};

function   getCookie(name){

     var  arr=document.cookie.split('; ');

     for(vari=0;i

          var  arr2=arr[i].split('=');

           //arr2[0]

          if(arr2[0]==name){

                 returnarr2[1];

            }

}

        return'';

}

function   removeCookie(name){

         setCookie(name,'任意值',-10);

}