前端存储cookie操作

CV

      /**
       * 设置cookie
       **/
      function setCookie(name, value, day) {
        if(typeof day == 'number'){
          let date = new Date();
          date.setDate(date.getDate() + day);
          document.cookie = name + '=' + value + ';expires=' + date;          
        }
      };

      /**
       * 获取cookie
       **/
      function getCookie(name) {
          let reg = RegExp(name + '=([^;]+)');
          let arr = document.cookie.match(reg);
          if (arr) {
              return arr[1];
          } else {
              return '';
          }
      };

      /**
       * 删除cookie
       **/
      function delCookie(name) {
          setCookie(name, null, -1);
      };