<!doctype html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link href="https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css" rel="stylesheet">
<link href="https://unpkg.com/nes.css@latest/css/nes.min.css" rel="stylesheet" />
<title>ついったー的なやつ</title>
<style>
</style>
</head>
<body class="bg-pink-50">
<main class="mt-20">
<div class="nes-container is-dark with-title">
<p class="title">Tubuyakisakata</p>
<section class="my-4">
<div>
<span class="text-sm font-bold text-center">つぶやきばしょ！</span>
<div class="p-2 mb-2">
<span class="websocket-status nes-text is-primary">null</span>
</div>
</div>
</section>
<section class="my-4">
<div class="p-2 rounded shadow">
<div>
<input
class="appearance-none border rounded w-full py-2 px-3 text-gray-700 leading-tight focus:outline-none focus:shadow-outline mb-2 nes-input is-dark"
id="send-message"
type="text"
placeholder="メッセージを入力"
>
</div>
<div class="text-right">
<button id="send-button" class="py-2 px-4 rounded nes-btn is-primary">
メッセージ送信
</button>
</div>
</div>
</section>
<section class="my-4">
<div class="text-sm font-bold text-center">メッセージ一覧</div>
<p id="messages">
</p>
</section>
</div>
</main>
<script>
const URL = 'ws://localhost:3000/'
const PROTOCOL = 'ws-sample'
const socket = new WebSocket(URL, PROTOCOL)
// ------------------------------
// WebSocket イベント
// ------------------------------
// WebSocket が開通したら発火する
// socket.onopen = () => {} でも可
socket.addEventListener('open', (event) => {
setWsStatus('つぶやいてくれたまえ')
})
// WebSocketサーバ からメッセージを受け取ったら発火する
// socket.onmessage = () => {} でも可
socket.addEventListener('message', ({ data }) => {
setWsStatus('message: ' + data)
appendMessage(data)
})
// WebSocketサーバ からエラーメッセージを受け取ったら発火する
// socket.onerror = () => {} でも可
socket.addEventListener('error', (event) => {
setWsStatus('エラー発生だよ')
console.log('error')
})
// WebSocket がクローズしたら発火する
// socket.onclose = () => {} でも可
socket.addEventListener('close', (event) => {
setWsStatus('つぶやき終わり！')
console.log('close')
})
// ------------------------------
// WebSocket メソッド
// ------------------------------
const sendMessage = (message) => {
socket.send(message)
}
// ------------------------------
// DOM 操作
// ------------------------------
const sendMessageEl = document.querySelector('#send-message')
const sendButtonEl = document.querySelector('#send-button')
sendButtonEl.addEventListener('click', () => {
const message = sendMessageEl.value
sendMessage(message)
sendMessageEl.value = ''
})
const setWsStatus = (text) => {
const statusEl = document.querySelector('.websocket-status')
statusEl.innerHTML = text
}
const createMessageEl = (text) => {
return `<div class="rounded bg-white p-2 mb-2 text text-gray-600">${text}</div>`
}
const appendMessage = (text) => {
const el = createMessageEl(text)
document.querySelector('#messages').insertAdjacentHTML('afterend', el)
}
</script>
</body>
</html>
ItoRino