closeWin() {
      console.log('关闭')
      if (navigator.userAgent.indexOf("MSIE") > 0) {
        if (navigator.userAgent.indexOf("MSIE 6.0") > 0) {
          window.opener = null;
          window.close();
        } else {
          window.open("", '_top');
          window.top.close();
        }
      } else if (navigator.userAgent.indexOf("Firefox") > 0) {
        window.location.href = 'about: blank'; //火狐默认状态非window.open的页面window.close是无效的
      } else {
        window.opener = null;
        window.open('', '_self', '');
        window.close();
        window.location.href = "about:blank";
        window.close();
      }
    },