Node.js => Socket.io Kommunikation

"Hallo Welt!" mit Socketnachrichten.

Installieren Sie Knotenmodule

npm install express
npm install socket.io

Node.js Server

const express = require('express'); 
const app = express();
const server = app.listen(3000,console.log("Socket.io Hello World server started!"));
const io = require('socket.io')(server);

io.on('connection', (socket) => {
    //console.log("Client connected!");
    socket.on('message-from-client-to-server', (msg) => {
        console.log(msg);
    })
    socket.emit('message-from-server-to-client', 'Hello World!');
});

Browser-Client

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Hello World with Socket.io</title>
  </head>
  <body>
    <script src="https://cdn.socket.io/socket.io-1.4.5.js"></script>
    <script>
      var socket = io("http://localhost:3000");
      socket.on("message-from-server-to-client", function(msg) {
          document.getElementById('message').innerHTML = msg;
      });
      socket.emit('message-from-client-to-server', 'Hello World!');
    </script>
    <p>Socket.io Hello World client started!</p>
    <p id="message"></p>
  </body>
</html>

Modified text is an extract of the original Stack Overflow Documentation

Lizenziert unter CC BY-SA 3.0

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Node.js
Socket.io Kommunikation

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"Hallo Welt!" mit Socketnachrichten.