如何使键入的聊天消息显示在屏幕上？（socket.io 和 node.js）

Question

I'm working on creating a chat app using socket.io and node.js, the server is connected, and both socket.io and client-side socket.io are connected, yet when I type something on the localhost page and press enter, it doesn't show anything on这页纸。 如何让我的聊天出现在页面上？ 先感谢您。

<index.js>

const express = require('express');
const app = express();
const http = require('http');
const port = process.env.PORT || 3000;
const server = http.createServer(app);
const { Server } = require('socket.io');
const io = new Server(server);

app.use(express.static(__dirname + '/public'));

app.get('/', (req, res) => {
  res.sendFile(__dirname + '/index.html');
});

io.on('connection', (socket) => {
    socket.on('chat message', (msg) => {
        io.emit('message:' + msg);
    });
});

server.listen(port, () => {
    console.log(`Server is running on port: ${port}`);
});

<script.js>

var socket = io();

var messages = document.getElementById('messages');
var form = document.getElementById('form');
var input = document.getElementById('input');

form.addEventListener('submit', function(e) {
    e.preventDefault();
    if (input.value) {
        socket.emit('chat message', input.value);
        input.value = '';
    }
});

socket.on('chat message', function(msg) {
    var item = document.createElement('li');
    item.textContent = msg;
    messages.appendChild(item);
    window.scrollTo(0, document.body.scrollHeight);
});

<index.html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="./style.css">
    <title>Chat App</title>
</head>
<body>
    <ul id="messages"></ul>
    <form id="form" action="">
        <input id="input" autocomplete="off">
        <button>Send</button>
    </form>

    <script src="/socket.io/socket.io.js"></script>
    <script src="./script.js"></script>
</body>
</html>

Answer 1

在你的 index.html 试试这个

<button type="submit">Send</button>

因为你的听众监听提交事件

如何使键入的聊天消息显示在屏幕上？（socket.io 和 node.js）

问题描述

1 个解决方案

解决方案1
0 2021-05-27 22:06:56

如何使键入的聊天消息显示在屏幕上？ （socket.io 和 node.js）

问题描述

1 个解决方案

解决方案1 0 2021-05-27 22:06:56

如何使键入的聊天消息显示在屏幕上？（socket.io 和 node.js）

解决方案1
0 2021-05-27 22:06:56