Node JS program to fetch bitcoin price and showing it in real time using socker.io

-

 File structure - 





package install - 












Server.js 

const express = require('express');
const app = express();
const ccxt = require('ccxt')
const http = require('http');
const server = http.createServer(app);
const { Server } = require("socket.io");
const { Console } = require('console');
const { BroadcastChannel } = require('worker_threads');
const io = new Server(server);


app.use(express.static('public'));
app.use(express.urlencoded({extended:false}))
app.use(express.json());

app.get('/sa', (req, res) => {
  res.send("sd");

});

io.on('connection', async (fun) => {
    i = 1;
    s = 2000;
    console.log('started')
     console.log(fun.id)
     const exchange = new ccxt.binance()

     // Load the markets
     let  real = 1
     await exchange.loadMarkets()
     fun.on('chat message', async (msg) => {
                 const ticker = await exchange.fetchTicker('BTC/USDT')
             
                // Get the ticker for the BTC/USDT market
                    if(ticker.last < real) {
                        console.log("BTC/USDT PRICE - " + ticker.last + "  " + i + "  price drop")
                    }
                    else if (ticker.last > real ){
                        console.log("BTC/USDT PRICE - " + ticker.last + "  " + i + "  price increase")

                    }
                    real = ticker.last
               
                // Log the last price
                const data = {
                    name: ticker.last,
                    surname:s
                }
               
               
                // console.log("check for dat first" , i)
                // console.log("check ", s)
                i++;    
                s++;
                io.emit('chat message', data);
             
         });
         
         fun.on('endchat_1', function (){
            console.log('ended')
            fun.disconnect(fun.id);
        });
         
         fun.on('chat_2', (msg) => {
            console.log('chat_2')
            for (let i = 0; i < 10000; i++) {
                io.emit('chat_2', msg + "  " + i + " chat_2" );
                // console.log( io.emit('chat_2', msg + "  " + i + " chat_2" ))
            }
        });
     });

 
server.listen(3000, () => {
  console.log('listening on *:3000');
});

index.html file - 

<!DOCTYPE html>
<html>
  <head>
    <title>Socket.IO chat</title>
 
  </head>
  <style>
    body{
      background-color: black;
    }
    h1{
      color: white;
    }
  </style>
  <body>
    <h1>BTC Price</h1>
    <ul id="messages"></ul>
    <ul id="">
        chat_2
        <span id="chat_2">
        </span>
    </ul>
    <form id="form" action="">
      <input id="input" autocomplete="off" /><button>Send</button>
    </form>
  </body>
  <script src="/socket.io/socket.io.js"></script>
  <script>
    var socket = io();
   
   
    var messages = document.getElementById('messages');
    var chat_2 = document.getElementById('chat_2');
    var form = document.getElementById('form');
    var input = document.getElementById('input');
 
    form.addEventListener('submit', function(e) {
      e.preventDefault();
      if (input.value) {
        console.log('er')
        socket.emit('chat message', input.value);
        input.value = '';
      }
    });
    let real = 0;
    const func = () =>{
        socket.emit('chat message', "");
        socket.on('chat message', function(msg) {
          if (msg.name < real) {
            messages.style.color = "red"
            messages.innerHTML =  msg.name;
          }
          else if (msg.name > real) {
            messages.style.color = "green"
            messages.innerHTML =  msg.name;
          }
          real = msg.name
    //   var item = document.createElement('li');
    //   item.textContent = msg;
    //   messages.appendChild(item);
    //   window.scrollTo(0, document.body.scrollHeight);
        // chat_2.innerHTML =  msg.surname;
    // console.log('run')
    });
    }
    const func_2 = async () =>{
        // await socket.emit('endchat_1');
        socket.emit('chat_2', "");
        console.log('chat_2')
        let real = 0;
        socket.on('chat_2', function(msg) {
          if (msg < real) {
            chat_2.innerHTML =  msg;
          }
          else if (msg > real) {
            chat_2.style.color = "green"
            chat_2.innerHTML =  msg;
          }
    });
    }
    setInterval(func,500)
    // func();
    // setInterval(func_2,1000)
  </script>
</html>


Output of the terminal -



















output of the index.html -







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