1：解决软键盘弹出顶走navbar
https://blog.csdn.net/m0_46978096/article/details/107175858

2：uni-nav-bar 自定义导航栏
https://ext.dcloud.net.cn/plugin?id=52

3：popup 弹出层
https://ext.dcloud.net.cn/plugin?id=329

4：uniapp 网页地址
https://hellouniapp.dcloud.net.cn/pages/extUI/icons/icons

5：uniapp socket 插件 
https://ext.dcloud.net.cn/plugin?id=1461

6：uniapp 使用iconfont字体图标
https://www.cnblogs.com/xguoz/p/10245641.html

7：夜神模拟器安装配置
https://ask.dcloud.net.cn/article/1024

8：vue class style 样式绑定
https://cn.vuejs.org/v2/guide/class-and-style.html

9：设置弹出的软键盘 & 输入框底部边距
class="uni-input" cursor-spacing="10"

<input
  class="uni-input"
  type="text"
  v-model="UserMessage"
  :cursor="cursorPosition"
  confirm-type="send"
  @confirm="SendMessage('text')"
  @touchend.stop="touchendPrevent"
  @focus="FocusEvent"
  @blur="BlurEvent"
  :cursor-spacing="10"
  placeholder="请输入内容"
/>


10: socket.io 相关

官网：https://socket.io

import { createServer } from "http";
import { Server } from "socket.io";

const httpServer = createServer();
const io = new Server(httpServer);

io.on("connection", (socket) => {
  
});

httpServer.listen(3000);

事件大全：https://socket.io/docs/v4/emit-cheatsheet/
io.on("connection", (socket) => {

  // basic emit
  socket.emit(/* ... */);

  // to all clients in the current namespace except the sender
  socket.broadcast.emit(/* ... */);

  // to all clients in room1 except the sender
  socket.to("room1").emit(/* ... */);

  // to all clients in room1 and/or room2 except the sender
  socket.to(["room1", "room2"]).emit(/* ... */);

  // to all clients in room1
  io.in("room1").emit(/* ... */);

  // to all clients in room1 and/or room2 except those in room3
  io.to(["room1", "room2"]).except("room3").emit(/* ... */);

  // to all clients in namespace "myNamespace"
  io.of("myNamespace").emit(/* ... */);

  // to all clients in room1 in namespace "myNamespace"
  io.of("myNamespace").to("room1").emit(/* ... */);

  // to individual socketid (private message)
  io.to(socketId).emit(/* ... */);

  // to all clients on this node (when using multiple nodes)
  io.local.emit(/* ... */);

  // to all connected clients
  io.emit(/* ... */);

  // WARNING: `socket.to(socket.id).emit()` will NOT work, as it will send to everyone in the room
  // named `socket.id` but the sender. Please use the classic `socket.emit()` instead.

  // with acknowledgement
  socket.emit("question", (answer) => {
    // ...
  });

  // without compression
  socket.compress(false).emit(/* ... */);

  // a message that might be dropped if the low-level transport is not writable
  socket.volatile.emit(/* ... */);
});



11：获取键盘高度
更新：https://uniapp.dcloud.io/component/input
新版已经补充了键盘高度，在弹出键盘时@focus，有event.detail = { value, height }，height 为键盘高度。

关闭键盘
uni.hideKeyboard()

12：消息界面局部滚动
https://blog.csdn.net/weixin_30267785/article/details/101268343

13：监听app关闭事件
https://blog.csdn.net/weixin_44599931/article/details/109056923