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Socket.io is a JavaScript library that enables real-time, bidirectional communication between web clients and servers. It works on every platform, browser, and device, and it's ideal for building chat applications, gaming servers, live notifications, and collaborative tools.<br>
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REAL-TIMECHATWITH NODE.JS&SOCKET.IO https://nareshit.com/courses/advanced-java-online-training
INTRODUCTION Intoday'sdigitalera,real-timecommunicationismoreimportant thanever.Whetherit'sasimplemessagingsystemora collaborativeworkspace,buildingareal-timechatappisa valuableskillforanywebdeveloper.Inthisarticle,we'llwalkyou throughhowtobuildareal-timechatapplicationusingNode.js andSocket.io. https://nareshit.com/courses/advanced-java-online-training
WHATISSOCKET.IO? Socket.ioisaJavaScriptlibrarythatenablesreal-time,bidirectional communicationbetweenwebclientsandservers.Itworksonevery platform,browser,anddevice,andit'sidealforbuildingchat applications,gamingservers,livenotifications,andcollaborativetools. PREREQUISITES Beforewebegin,makesureyouhavethefollowing: Node.jsandnpminstalled BasicknowledgeofJavaScriptandNode.js AtexteditorlikeVSCode
STEP1:INITIALIZETHEPROJECT Startbycreatinganewprojectfolderandinitializing Node.js: mkdirrealtime-chat-app cdrealtime-chat-app npminit-y STEP2:INSTALLDEPENDENCIES You’llneedExpressfortheserverandSocket.iofor WebSocketcommunication:npminstallexpress socket.io https://nareshit.com/courses/advanced-java-online-training
STEP3:CREATETHESERVER Createafilenamedserver.js: constexpress=require('express'); consthttp=require('http'); constsocketIo=require('socket.io'); constapp=express(); constserver=http.createServer(app); constio=socketIo(server); //Servestaticfiles app.use(express.static('public')); io.on('connection',(socket)=>{ console.log('Auserconnected'); socket.on('chatmessage',(msg)=>{ io.emit('chatmessage',msg); }); socket.on('disconnect',()=>{ console.log('Auserdisconnected'); }); }); server.listen(3000,()=>{ console.log('Serverrunningon http://localhost:3000'); });
STEP4:CREATETHEFRONTEND Insideapublicfolder,createanindex.html: <!DOCTYPEhtml> <htmllang="en"> <head> <metacharset="UTF-8"> <title>Real-TimeChatApp</title> <style> body{font-family:Arial;} #messages{list-style:none;padding:0;} li{padding:5px10px;} input{padding:10px;width:300px;} </style> </head> <body> <h2>Real-TimeChatApp</h2> <ulid="messages"></ul> <formid="form"> <inputid="input"autocomplete="off"placeholder="Typeyourmessage..."/><button>Send</button>
</form> <scriptsrc="/socket.io/socket.io.js"></script> <script> constsocket=io(); constform=document.getElementById('form'); constinput=document.getElementById('input'); constmessages=document.getElementById('messages'); form.addEventListener('submit',(e)=>{ e.preventDefault(); if(input.value){ socket.emit('chatmessage',input.value); input.value=''; } }); socket.on('chatmessage',(msg)=>{ constli=document.createElement('li'); li.textContent=msg; messages.appendChild(li); }); </script> </body> </html>
STEP5:RUNYOURCHATAPP Startyourserver: nodeserver.js Visithttp://localhost:3000inyourbrowser.Openmultipletabsorbrowserstotestreal-time communication. KEYFEATURESYOUCANADD Usernamesandloginsystem Privatemessaging Chatroomsorchannels Messagetimestamps Storingmessagesinadatabase(MongoDB,forexample)
CONCLUSION UsingNode.jsandSocket.io,buildingareal-timechatapplicationbecomes straightforwardandefficient.Thisfoundationalknowledgeopensthedoortomore complexfeaturesandcanbeextendedintoscalablereal-timesystemsforvarioususe cases. Whetheryou'rebuildingalivesupportsystemoramultiplayergamelobby,mastering real-timecommunicationisamustformoderndevelopers. https://nareshit.com/courses/advanced-java-online-training
THANKYOU CONTACTUS +918179191999 support@nareshit.com https://nareshit.com/courses/advanced-java-online-training 2ndFloor,DurgaBhavaniPlaza,Ameerpet,Hyderabad,500016.
