代码:

const isWeChat = () => {
  const userAgent = navigator.userAgent.toLowerCase();
  return userAgent.includes('micromessenger');
};

判断当前是微信浏览器或者公司app,就显示按钮,否则不显示:

if (isWeChat() || getCookie('appType')) {
  document.getElementsByClassName("share-box")[0].style.display = "block";
}else{
  document.getElementsByClassName("share-box")[0].style.display = "none";
}