cubstart · Jacobshin04 · Mar 7, 2025 · Mar 7, 2025 · Mar 7, 2025 · Mar 7, 2025
diff --git a/week4/jacob_shin/index.html b/week4/jacob_shin/index.html
@@ -11,7 +11,7 @@
     <h1>
 
         <ul id="letter">
-            <li id="count" >0</li>
+            <li id="count" >1</li>
             <li> </li>
             <li>C</li>
             <li>o</li>

diff --git a/week5/jacob_shin/index.html b/week5/jacob_shin/index.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html>
+  <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; }
+
+      #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; }
+    </style>
+  </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>
+      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.startsWith("nickname: "))
+        {
+            var nickname = input.value.replace("nickname: ", "");
+            socket.emit('nickname', nickname);
+            input.value = '';
+        }
+        else 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);
+      });
+    </script>
+
+  </body>
+</html>
diff --git a/week5/jacob_shin/index.js b/week5/jacob_shin/index.js
@@ -0,0 +1,45 @@
+const express = require('express');
+const app = express();
+const http = require('http');
+const server = http.createServer(app);
+const { Server } = require("socket.io");
+const io = new Server(server);
+
+app.get('/', (req, res) => {
+    res.sendFile(__dirname + '/index.html');
+  });
+
+
+io.on('connection', (socket) => {
+console.log('a user connected');
+
+socket.broadcast.emit('chat message', 'Someone entered the chat!');
+
+
+socket.on('disconnect', () => {
+    console.log('user disconnected');
+    socket.broadcast.emit('chat message', 'Someone left the chat...');
+
+});
+
+//receive on node side
+socket.on('chat message', (msg) => {
+    console.log('message: ' + msg);
+  });
+
+socket.on('chat message', (msg) => {
+    const nickname = socket.nickname || 'Anonymous';
+    io.emit('chat message', `${nickname}: ${msg}`);
+});
+
+socket.on('nickname', (nickname) => {
+    // io.emit('chat message', msg);
+    // });
+    console.log('nickname: ' + nickname);
+    socket.nickname = nickname
+});
+});
+
+server.listen(3000, () => {
+  console.log('listening on *:3000');
+});