firebase推送消息的使用:

https://www.gstatic.com/firebasejs/9.1.3/firebase-app-compat.js

https://console.firebase.google.com //firebase控制台

https://firebase.google.com/docs/cloud-messaging/js/client?hl=zh-cn  //在web站点推送

https://blog.csdn.net/weixin_42861028/article/details/105510528 //使用

https://firebase.google.cn/docs/cloud-messaging/js/receive?hl=zh-cn#web-namespaced-api //js调用