onbeforeunload， 浏览器关闭和刷新提示

// 关闭浏览器提示
function closeWindowTip(path) {
  window.onbeforeunload = null;
  // eslint-disable-next-line func-names
  window.onbeforeunload = function (e) {
    const thisPath = window.location.href;
    const endPath = thisPath.split('#')[1].split('?')[0];
    if (path === endPath) {
      e = e || window.event;
      // 兼容IE8和Firefox 4之前的版本
      if (e) {
        e.returnValue = '';
      }
      // Chrome, Safari, Firefox 4+, Opera 12+ , IE 9+
      return '';
    }
    window.onbeforeunload = null;
    return '';
  };
}

returnValue 填写了内容也不生效