From 83c7ba813f4b396f1ce8ce84ab1a3f421407aef5 Mon Sep 17 00:00:00 2001
From: sanskrati-1234 <sanskratiagrawal306@gmail.com>
Date: Thu, 31 Mar 2022 09:36:12 +0530
Subject: [PATCH] refactor: use ES6 syntax for the client side code

---
 index.html | 74 +++++++++++++++++++++++++++++++++++++++++-------------
 index.js   | 16 ++++++------
 2 files changed, 65 insertions(+), 25 deletions(-)
diff --git a/index.html b/index.html
index 35aebfb1e..7cc38b457 100644
--- a/index.html
+++ b/index.html
@@ -3,16 +3,56 @@
   <head>
     <title>Socket.IO chat</title>
     <style>
-      body { margin: 0; padding-bottom: 3rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
+      body {
+        margin: 0;
+        padding-bottom: 3rem;
+        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
+          Helvetica, Arial, sans-serif;
+      }
 
-      #form { background: rgba(0, 0, 0, 0.15); padding: 0.25rem; position: fixed; bottom: 0; left: 0; right: 0; display: flex; height: 3rem; box-sizing: border-box; backdrop-filter: blur(10px); }
-      #input { border: none; padding: 0 1rem; flex-grow: 1; border-radius: 2rem; margin: 0.25rem; }
-      #input:focus { outline: none; }
-      #form > button { background: #333; border: none; padding: 0 1rem; margin: 0.25rem; border-radius: 3px; outline: none; color: #fff; }
+      #form {
+        background: rgba(0, 0, 0, 0.15);
+        padding: 0.25rem;
+        position: fixed;
+        bottom: 0;
+        left: 0;
+        right: 0;
+        display: flex;
+        height: 3rem;
+        box-sizing: border-box;
+        backdrop-filter: blur(10px);
+      }
+      #input {
+        border: none;
+        padding: 0 1rem;
+        flex-grow: 1;
+        border-radius: 2rem;
+        margin: 0.25rem;
+      }
+      #input:focus {
+        outline: none;
+      }
+      #form > button {
+        background: #333;
+        border: none;
+        padding: 0 1rem;
+        margin: 0.25rem;
+        border-radius: 3px;
+        outline: none;
+        color: #fff;
+      }
 
-      #messages { list-style-type: none; margin: 0; padding: 0; }
-      #messages > li { padding: 0.5rem 1rem; }
-      #messages > li:nth-child(odd) { background: #efefef; }
+      #messages {
+        list-style-type: none;
+        margin: 0;
+        padding: 0;
+      }
+      #messages > li {
+        padding: 0.5rem 1rem;
+      }
+      #messages > li:nth-child(odd) {
+        background: #efefef;
+      }
     </style>
   </head>
   <body>
@@ -23,22 +63,22 @@
     <script src="/socket.io/socket.io.js"></script>
 
     <script>
-      var socket = io();
+      const socket = io();
 
-      var messages = document.getElementById('messages');
-      var form = document.getElementById('form');
-      var input = document.getElementById('input');
+      const messages = document.getElementById("messages");
+      const form = document.getElementById("form");
+      const input = document.getElementById("input");
 
-      form.addEventListener('submit', function(e) {
+      form.addEventListener("submit", (e) => {
         e.preventDefault();
         if (input.value) {
-          socket.emit('chat message', input.value);
-          input.value = '';
+          socket.emit("chat message", input.value);
+          input.value = "";
         }
       });
 
-      socket.on('chat message', function(msg) {
-        var item = document.createElement('li');
+      socket.on("chat message", (msg) => {
+        const item = document.createElement("li");
         item.textContent = msg;
         messages.appendChild(item);
         window.scrollTo(0, document.body.scrollHeight);
diff --git a/index.js b/index.js
index 77be25229..09d614355 100644
--- a/index.js
+++ b/index.js
@@ -1,15 +1,15 @@
-const app = require('express')();
-const http = require('http').Server(app);
-const io = require('socket.io')(http);
+const app = require("express")();
+const http = require("http").Server(app);
+const io = require("socket.io")(http);
 const port = process.env.PORT || 3000;
 
-app.get('/', (req, res) => {
-  res.sendFile(__dirname + '/index.html');
+app.get("/", (req, res) => {
+  res.sendFile(__dirname + "/index.html");
 });
 
-io.on('connection', (socket) => {
-  socket.on('chat message', msg => {
-    io.emit('chat message', msg);
+io.on("connection", (socket) => {
+  socket.on("chat message", (msg) => {
+    io.emit("chat message", msg);
   });
 });
 
