programming - 長留裕平のブログ

NekoNekodouga.html

<!DOCTYPE html>
<html lang="ja">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>ねこねこ動画 - 動画共有サイト</title>
    <style>
        /* ベーススタイル */
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f4f4f4;
        }

        header {
            background-color: #333;
            color: white;
            padding: 10px;
            text-align: center;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 100;
        }

        header h1 {
            margin: 0;
            font-size: 24px;
        }

        nav ul {
            list-style-type: none;
            padding: 0;
            margin: 10px 0 0 0;
            text-align: center;
        }

        nav ul li {
            display: inline-block;
            margin-right: 15px;
        }

        nav ul li a {
            color: white;
            text-decoration: none;
            font-size: 16px;
        }

        #searchBar {
            margin-top: 10px;
            padding: 5px;
            width: 300px;
            max-width: 80%;
            border: none;
            border-radius: 4px;
        }

        .container {
            margin-top: 100px;
            padding: 20px;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .upload-container, .video-info, .description, .comments, .related-videos, .gallery {
            background-color: white;
            padding: 20px;
            margin-top: 20px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .upload-container h2, .video-info h2, .description h2, .comments h2, .related-videos h2, .gallery h2 {
            margin-top: 0;
        }

        .upload-container form input[type="file"],
        .upload-container form input[type="text"],
        .upload-container form textarea,
        .upload-container form select {
            width: 100%;
            padding: 10px;
            margin-bottom: 10px;
            border-radius: 4px;
            border: 1px solid #ccc;
        }

        .upload-container form button {
            padding: 10px 20px;
            background-color: #333;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }

        .upload-container form button:hover {
            background-color: #555;
        }

        .video-container {
            position: relative;
            text-align: center;
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
        }

        .video-container video {
            width: 100%;
            height: auto;
            border-radius: 10px;
        }

        .comment-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 10;
        }

        .comment {
            position: absolute;
            white-space: nowrap;
            font-size: 20px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            animation: moveComment linear forwards;
        }

        @keyframes moveComment {
            from {
                left: 100%;
            }
            to {
                left: -100%;
            }
        }

        .description p, .comments p, .gallery p {
            margin: 10px 0;
        }

        .comments form textarea {
            width: 100%;
            padding: 10px;
            border-radius: 4px;
            border: 1px solid #ccc;
            resize: vertical;
            margin-bottom: 10px;
        }

        .comments form select {
            width: 100%;
            padding: 10px;
            margin-bottom: 10px;
            border-radius: 4px;
        }

        .comments form button {
            padding: 10px 20px;
            background-color: #333;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }

        .comments form button:hover {
            background-color: #555;
        }

        .comment-list .comment {
            background-color: #f9f9f9;
            padding: 10px;
            margin-bottom: 10px;
            border-radius: 5px;
        }

        .like-button, .dislike-button {
            background-color: #333;
            color: white;
            border: none;
            padding: 5px 10px;
            margin: 5px;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }

        .like-button:hover, .dislike-button:hover {
            background-color: #555;
        }

        footer {
            background-color: #333;
            color: white;
            text-align: center;
            padding: 20px;
            margin-top: 40px;
        }

        footer p {
            margin: 0;
        }

        @media (max-width: 768px) {
            nav ul li {
                display: block;
                margin: 10px 0;
            }

            #searchBar {
                width: 80%;
            }

            .video-container {
                max-width: 100%;
            }
        }
    </style>
</head>
<body>

    <!-- ヘッダー開始 -->
    <header>
        <h1>ねこねこ動画</h1>
        <nav>
            <ul>
                <li><a href="#">ホーム</a></li>
                <li><a href="#">人気動画</a></li>
                <li><a href="#">カテゴリ</a></li>
                <li><a href="#">ログイン</a></li>
            </ul>
        </nav>
        <input type="text" id="searchBar" placeholder="動画を検索..." />
    </header>
    <!-- ヘッダー終了 -->

    <div class="container">

        <!-- 動画アップロードエリア -->
        <div class="upload-container">
            <h2>動画をアップロード</h2>
            <form id="uploadForm" enctype="multipart/form-data">
                <input type="file" id="videoFile" name="video" accept="video/*" required><br>
                <input type="text" id="videoTitle" name="title" placeholder="動画タイトル" required><br>
                <textarea id="videoDescription" name="description" rows="4" placeholder="動画の説明" required></textarea><br>
                <button type="submit">アップロード</button>
            </form>
            <div id="uploadStatus"></div>
        </div>

        <!-- プレビューエリア -->
        <div class="video-container" id="previewContainer" style="display: none;">
            <h2 id="previewTitle">プレビュー: 動画タイトル</h2>
            <video controls id="videoPreview"></video>
            <div class="comment-overlay" id="commentOverlay"></div>
            <p id="previewDescription">プレビュー: 動画の説明</p>
        </div>

        <!-- コメント投稿エリア -->
        <div class="comments">
            <h2>コメントを投稿</h2>
            <form id="commentForm">
                <textarea id="commentText" rows="4" cols="50" placeholder="コメントを追加..." required></textarea><br>
                <label for="commentTime">表示タイミング (秒):</label>
                <input type="number" id="commentTime" placeholder="0" min="0" required><br>
                <label for="commentColor">コメントの色:</label>
                <select id="commentColor">
                    <option value="white">白</option>
                    <option value="red">赤</option>
                    <option value="blue">青</option>
                    <option value="green">緑</option>
                    <option value="yellow">黄色</option>
                </select><br>
                <label for="commentFontSize">フォントサイズ:</label>
                <select id="commentFontSize">
                    <option value="20px">小</option>
                    <option value="24px">中</option>
                    <option value="28px">大</option>
                </select><br>
                <label for="commentSpeed">表示速度 (秒):</label>
                <input type="number" id="commentSpeed" placeholder="10" min="5" max="20" required><br>
                <button type="submit">投稿</button>
            </form>
            <div id="commentList" class="comment-list"></div>
        </div>

        <!-- 評価機能 -->
        <div class="rating">
            <button class="like-button" id="likeButton">👍 いいね</button>
            <span id="likeCount">0</span>
            <button class="dislike-button" id="dislikeButton">👎 バッド</button>
            <span id="dislikeCount">0</span>
        </div>

    </div>

    <!-- フッター開始 -->
    <footer>
        <p>&copy; 2023 ねこねこ動画. All Rights Reserved.</p>
    </footer>
    <!-- フッター終了 -->

    <script>
        let comments = [];

        // 動画のアップロードとプレビュー処理
        document.getElementById("uploadForm").addEventListener("submit", function(event) {
            event.preventDefault();

            const fileInput = document.getElementById("videoFile");
            const file = fileInput.files[0];
            const title = document.getElementById("videoTitle").value;
            const description = document.getElementById("videoDescription").value;

            if (!file) {
                alert("動画ファイルを選択してください。");
                return;
            }

            const reader = new FileReader();
            reader.onload = function(e) {
                const videoData = e.target.result;
                document.getElementById("previewContainer").style.display = "block";
                document.getElementById("videoPreview").src = videoData;
                document.getElementById("previewTitle").textContent = "プレビュー: " + title;
                document.getElementById("previewDescription").textContent = "プレビュー: " + description;
            };
            reader.readAsDataURL(file);
        });

        // コメント投稿処理
        document.getElementById("commentForm").addEventListener("submit", function(event) {
            event.preventDefault();

            const commentText = document.getElementById("commentText").value;
            const commentTime = parseInt(document.getElementById("commentTime").value);
            const commentColor = document.getElementById("commentColor").value;
            const commentFontSize = document.getElementById("commentFontSize").value;
            const commentSpeed = parseInt(document.getElementById("commentSpeed").value);

            if (commentText && commentTime >= 0) {
                const comment = {
                    text: commentText,
                    time: commentTime,
                    color: commentColor,
                    fontSize: commentFontSize,
                    speed: commentSpeed
                };

                comments.push(comment);
                displayCommentInList(comment);
                document.getElementById("commentForm").reset();
            }
        });

        // コメントリストに表示
        function displayCommentInList(comment) {
            const commentList = document.getElementById("commentList");
            const commentDiv = document.createElement("div");
            commentDiv.classList.add("comment");
            commentDiv.textContent = `タイミング: ${comment.time}秒 - ${comment.text}`;
            commentList.appendChild(commentDiv);
        }

        // 動画の再生に合わせてコメントを表示
        const videoElement = document.getElementById("videoPreview");
        videoElement.addEventListener("timeupdate", function() {
            const currentTime = Math.floor(videoElement.currentTime);
            comments.forEach(comment => {
                if (comment.time === currentTime) {
                    displayCommentOnVideo(comment);
                }
            });
        });

        // 動画上にコメントを流す
        function displayCommentOnVideo(comment) {
            const overlay = document.getElementById("commentOverlay");
            const commentElement = document.createElement("div");
            commentElement.classList.add("comment");
            commentElement.textContent = comment.text;
            commentElement.style.color = comment.color;
            commentElement.style.fontSize = comment.fontSize;
            commentElement.style.animationDuration = `${comment.speed}s`;
            commentElement.style.top = Math.random() * 80 + "%"; // ランダムな位置
            overlay.appendChild(commentElement);

            // 一定時間後にコメントを削除
            setTimeout(() => {
                commentElement.remove();
            }, comment.speed * 1000);
        }

        // いいね・バッド機能
        document.getElementById("likeButton").addEventListener("click", function() {
            let likeCount = parseInt(document.getElementById("likeCount").textContent);
            likeCount++;
            document.getElementById("likeCount").textContent = likeCount;
        });

        document.getElementById("dislikeButton").addEventListener("click", function() {
            let dislikeCount = parseInt(document.getElementById("dislikeCount").textContent);
            dislikeCount++;
            document.getElementById("dislikeCount").textContent = dislikeCount;
        });

    </script>

</body>
</html>

ELDER.html

<!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>ELDER - ソーシャルネットワーキングサービス</title>
  <!-- CSSファイルの読み込み -->
  <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet"> 
  <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css" rel="stylesheet">
  <!-- RiTa.jsライブラリの読み込み -->
  <script src="https://cdnjs.cloudflare.com/ajax/libs/rita/1.3.63/rita-full.min.js"></script>
  <style>
    /* 既存のスタイルシート */
    body {
      padding-top: 20px;
      background: linear-gradient(to right, #f8f9fa, #e9ecef);
      font-family: 'Arial', sans-serif;
      color: #343a40;
    }

    .navbar {
      background-color: #007bff;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

    .navbar-brand,
    .nav-link {
      color: #fff !important;
      font-weight: bold;
    }

    .navbar-toggler {
      border: none;
    }

    .card {
      border-radius: 12px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }

    .card-body {
      padding: 30px;
    }

    .form-control {
      border-radius: 20px;
      border: 1px solid #ced4da;
      padding: 15px;
      transition: border-color 0.3s;
    }

    .form-control:focus {
      border-color: #007bff;
      box-shadow: none;
    }

    .btn-primary {
      background-color: #007bff;
      border: none;
      border-radius: 20px;
      padding: 10px 20px;
      font-weight: bold;
      transition: background-color 0.3s, transform 0.3s;
    }

    .btn-primary:hover {
      background-color: #0056b3;
      transform: translateY(-3px);
    }

    .btn-secondary {
      border-radius: 20px;
      padding: 10px 20px;
      font-weight: bold;
      transition: background-color 0.3s, transform 0.3s;
    }

    .btn-secondary:hover {
      background-color: #6c757d;
      transform: translateY(-3px);
    }

    .profile-img {
      width: 80px;
      height: 80px;
      object-fit: cover;
      border-radius: 50%;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    }

    .text-center h1 {
      font-weight: 700;
      font-size: 2.5em;
      margin-bottom: 20px;
      color: #007bff;
    }

    .comment-section {
      margin-top: 20px;
      padding: 20px;
      background-color: #f1f3f5;
      border-radius: 8px;
    }

    .comment-section .card {
      border: none;
      background: #ffffff;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

    .modal-content {
      border-radius: 15px;
      overflow: hidden;
    }

    .modal-header {
      background-color: #007bff;
      color: white;
      border-bottom: none;
    }

    .modal-footer {
      border-top: none;
    }

    .form-error {
      color: red;
      font-size: 0.9em;
    }

    /* タイムラインのデザイン */
    #timeline {
      margin-top: 20px;
    }

    #timeline .card {
      border-radius: 15px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      margin-bottom: 20px;
      overflow: hidden;
      background-color: #fff;
    }

    #timeline .card-body {
      padding: 20px;
    }

    #timeline .btn {
      border-radius: 20px;
    }

    /* 投稿のシェアボタン */
    .btn-share {
      background-color: #ff9800;
      border: none;
      border-radius: 20px;
      padding: 5px 10px;
      color: #fff;
      font-weight: bold;
      transition: background-color 0.3s;
    }

    .btn-share:hover {
      background-color: #e68900;
    }

    /* X（旧Twitter）シェアボタン */
    .btn-share-twitter {
      background-color: #1da1f2;
      border: none;
      border-radius: 20px;
      padding: 5px 10px;
      color: #fff;
      font-weight: bold;
      transition: background-color 0.3s;
    }

    .btn-share-twitter:hover {
      background-color: #1480bf;
    }

    /* 通知エリア */
    #notificationArea {
      position: fixed;
      top: 80px;
      right: 20px;
      z-index: 1000;
      max-width: 300px;
    }

    /* FEEDアイコンをRSSの文字に変更 */
    .nav-item .rss-icon {
      font-weight: bold;
      color: #fff;
    }
  </style>
</head>
<body>

<!-- ナビゲーションバー -->
<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">ELDER</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="ナビゲーションの切り替え">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNav">
    <ul class="navbar-nav ml-auto">
      <li class="nav-item">
        <a class="nav-link" href="#" onclick="showLoginForm()">ログイン</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#" onclick="showRegisterForm()">登録</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#" onclick="showProfile()" style="display: none;" id="navProfile">プロフィール</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#" onclick="logout()" style="display: none;" id="navLogout">ログアウト</a>
      </li>
      <!-- FEEDアイコンをRSSの文字に変更 -->
      <li class="nav-item" id="navFeed" style="display: none;">
        <a class="nav-link rss-icon" href="#" onclick="showFeedForm()">RSS</a>
      </li>
    </ul>
  </div>
</nav>

<div class="container">
  <!-- ログインフォーム -->
  <div id="loginForm" class="card w-50 mx-auto">
    <div class="card-body">
      <h2 class="card-title text-center mb-4">ログイン</h2>
      <div class="form-group">
        <input type="text" id="loginUsername" class="form-control" placeholder="ユーザー名">
        <span id="loginUsernameError" class="form-error" style="display: none;">ユーザー名を入力してください</span>
      </div>
      <div class="form-group">
        <input type="password" id="loginPassword" class="form-control" placeholder="パスワード">
        <span id="loginPasswordError" class="form-error" style="display: none;">パスワードを入力してください</span>
      </div>
      <button onclick="login()" class="btn btn-primary btn-block">ログイン</button>
      <button onclick="showRegisterForm()" class="btn btn-secondary btn-block">登録</button>
    </div>
  </div>

  <!-- 登録フォーム -->
  <div id="registerForm" class="card w-50 mx-auto" style="display: none;">
    <div class="card-body">
      <h2 class="card-title text-center mb-4">登録</h2>
      <div class="form-group">
        <input type="text" id="registerName" class="form-control" placeholder="氏名">
        <span id="registerNameError" class="form-error" style="display: none;">氏名を入力してください</span>
      </div>
      <div class="form-group">
        <input type="text" id="registerUsername" class="form-control" placeholder="ユーザー名">
        <span id="registerUsernameError" class="form-error" style="display: none;">ユーザー名を入力してください</span>
      </div>
      <div class="form-group">
        <input type="password" id="registerPassword" class="form-control" placeholder="パスワード">
        <span id="registerPasswordError" class="form-error" style="display: none;">パスワードを入力してください</span>
      </div>
      <div class="form-group">
        <input type="password" id="registerConfirmPassword" class="form-control" placeholder="パスワードを確認">
        <span id="registerConfirmPasswordError" class="form-error" style="display: none;">パスワードが一致しません</span>
      </div>
      <button onclick="register()" class="btn btn-primary btn-block">登録</button>
      <button onclick="showLoginForm()" class="btn btn-secondary btn-block">ログインに戻る</button>
    </div>
  </div>

  <!-- プロフィール -->
  <div id="profile" class="card w-50 mx-auto" style="display: none;">
    <div class="card-body">
      <h2 class="card-title text-center mb-4">プロフィール</h2>
      <div class="text-center mb-3">
        <img id="profileImg" class="profile-img" src="default_profile_img.jpg" alt="プロフィール画像">
      </div>
      <p class="text-center mb-2"><strong>氏名:</strong> <span id="profileName"></span></p>
      <p class="text-center mb-4"><strong>ユーザー名:</strong> <span id="profileUsername"></span></p>
      <div class="form-group">
        <input type="file" id="profileImageInput" accept="image/*" class="form-control-file">
      </div>
      <button onclick="uploadProfileImage()" class="btn btn-primary btn-block"><i class="fas fa-upload"></i> プロフィール画像をアップロード</button>
      <button onclick="logout()" class="btn btn-danger btn-block"><i class="fas fa-sign-out-alt"></i> ログアウト</button>
    </div>
  </div>

  <!-- 投稿フォーム -->
  <div id="postForm" class="card w-75 mx-auto" style="display: none;">
    <div class="card-body">
      <h2 class="card-title text-center mb-4">投稿を作成</h2>
      <div class="form-group">
        <textarea id="postContent" class="form-control" rows="3" placeholder="今何を考えていますか？"></textarea>
      </div>
      <button onclick="createPost()" class="btn btn-primary btn-block">投稿</button>
    </div>
  </div>

  <!-- FEED登録フォーム -->
  <div id="feedForm" class="card w-75 mx-auto" style="display: none;">
    <div class="card-body">
      <h2 class="card-title text-center mb-4">FEEDを登録</h2>
      <div class="form-group">
        <input type="text" id="feedUrl" class="form-control" placeholder="RSSフィードのURL">
        <span id="feedUrlError" class="form-error" style="display: none;">RSSフィードのURLを入力してください</span>
      </div>
      <button onclick="registerFeed()" class="btn btn-primary btn-block">登録</button>
      <div class="form-group mt-4">
        <label for="feedInterval">自動投稿の間隔（秒）:</label>
        <input type="number" id="feedInterval" class="form-control" placeholder="例：60" min="1">
      </div>
      <button onclick="setFeedInterval()" class="btn btn-secondary btn-block">間隔を設定</button>
    </div>
  </div>

  <!-- AIBOT投稿登録フォーム -->
  <div id="aiBotForm" class="card w-75 mx-auto" style="display: none;">
    <div class="card-body">
      <h2 class="card-title text-center mb-4">BOT投稿を登録</h2>
      <div class="form-group">
        <textarea id="aiBotContent" class="form-control" rows="3" placeholder="BOTに投稿させたい内容を入力してください"></textarea>
      </div>
      <button onclick="registerAiBotPost()" class="btn btn-primary btn-block">BOT投稿を登録</button>
    </div>
  </div>

  <!-- タイムライン -->
  <div id="timeline" class="w-75 mx-auto mt-4"></div>

  <!-- 通知エリア -->
  <div id="notificationArea" class="alert alert-info" style="display: none;"></div>

</div>

<!-- リプライモーダル -->
<div class="modal fade" id="replyModal" tabindex="-1" role="dialog" aria-labelledby="replyModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <!-- モーダルの内容は後ほどJavaScriptで制御します -->
      <div class="modal-header">
        <h5 class="modal-title" id="replyModalLabel">投稿に返信</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="閉じる">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        <textarea id="replyContent" class="form-control" rows="3" placeholder="返信をここに書いてください..."></textarea>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">閉じる</button>
        <button type="button" onclick="postReply()" class="btn btn-primary">返信</button>
      </div>
    </div>
  </div>
</div>

<!-- スクリプトの読み込み -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
<!-- BootstrapのJavaScript -->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<!-- RiTa.jsライブラリの読み込み（既にhead内で読み込み済み） -->
<script>
  // ユーザー、投稿、フィード、チャット関連のデータ
  let currentUser = null;
  let users = [];
  let posts = [];
  let feeds = [];
  let notifications = [];
  let aiBotPosts = [];
  let feedFetchInterval = 60000; // デフォルトは60,000ミリ秒（60秒）
  let feedFetchTimer;
  let markovBotInterval = 60000; // マルコフ連鎖BOTの投稿間隔

  // ローカルストレージの読み込み・保存関連の関数
  function saveUsersToLocalStorage() {
    localStorage.setItem('users', JSON.stringify(users));
  }

  function savePostsToLocalStorage() {
    localStorage.setItem('posts', JSON.stringify(posts));
  }

  function saveFeedsToLocalStorage() {
    localStorage.setItem('feeds', JSON.stringify(feeds));
  }

  function saveAiBotPostsToLocalStorage() {
    localStorage.setItem('aiBotPosts', JSON.stringify(aiBotPosts));
  }

  function saveCurrentUserToLocalStorage() {
    if (currentUser) {
      localStorage.setItem('currentUser', JSON.stringify(currentUser));
    } else {
      localStorage.removeItem('currentUser');
    }
  }

  function loadUsersFromLocalStorage() {
    const storedUsers = localStorage.getItem('users');
    if (storedUsers) {
      users = JSON.parse(storedUsers);
    }
  }

  function loadPostsFromLocalStorage() {
    const storedPosts = localStorage.getItem('posts');
    if (storedPosts) {
      posts = JSON.parse(storedPosts);
    }
  }

  function loadFeedsFromLocalStorage() {
    const storedFeeds = localStorage.getItem('feeds');
    if (storedFeeds) {
      feeds = JSON.parse(storedFeeds);
    }
  }

  function loadAiBotPostsFromLocalStorage() {
    const storedAiBotPosts = localStorage.getItem('aiBotPosts');
    if (storedAiBotPosts) {
      aiBotPosts = JSON.parse(storedAiBotPosts);
    }
  }

  function loadCurrentUserFromLocalStorage() {
    const storedCurrentUser = localStorage.getItem('currentUser');
    if (storedCurrentUser) {
      currentUser = JSON.parse(storedCurrentUser);
    }
  }

  // フォームの表示・非表示
  function hideAll() {
    document.getElementById('loginForm').style.display = 'none';
    document.getElementById('registerForm').style.display = 'none';
    document.getElementById('profile').style.display = 'none';
    document.getElementById('postForm').style.display = 'none';
    document.getElementById('feedForm').style.display = 'none';
    document.getElementById('aiBotForm').style.display = 'none';
  }

  function showLoginForm() {
    hideAll();
    document.getElementById('loginForm').style.display = 'block';
    document.getElementById('navProfile').style.display = 'none';
    document.getElementById('navLogout').style.display = 'none';
    document.getElementById('navFeed').style.display = 'none';
  }

  function showRegisterForm() {
    hideAll();
    document.getElementById('registerForm').style.display = 'block';
  }

  function showProfile() {
    hideAll();
    document.getElementById('profile').style.display = 'block';
    document.getElementById('profileName').textContent = currentUser.name;
    document.getElementById('profileUsername').textContent = currentUser.username;
    document.getElementById('postForm').style.display = 'block';
    document.getElementById('feedForm').style.display = 'block';
    document.getElementById('aiBotForm').style.display = 'block';
    loadProfileImage(); // プロフィール画像をロード
    displayTimeline(); // タイムラインを表示
    document.getElementById('navProfile').style.display = 'block';
    document.getElementById('navLogout').style.display = 'block';
    document.getElementById('navFeed').style.display = 'block'; // RSSナビゲーションを表示
  }

  function showFeedForm() {
    hideAll();
    document.getElementById('feedForm').style.display = 'block';
  }

  // ユーザー認証関連の関数
  function validateLoginForm() {
    let valid = true;
    const username = document.getElementById('loginUsername').value;
    const password = document.getElementById('loginPassword').value;

    if (!username) {
      document.getElementById('loginUsernameError').style.display = 'block';
      valid = false;
    } else {
      document.getElementById('loginUsernameError').style.display = 'none';
    }

    if (!password) {
      document.getElementById('loginPasswordError').style.display = 'block';
      valid = false;
    } else {
      document.getElementById('loginPasswordError').style.display = 'none';
    }

    return valid;
  }

  function login() {
    if (!validateLoginForm()) {
      return;
    }

    const username = document.getElementById('loginUsername').value;
    const password = document.getElementById('loginPassword').value;
    const user = users.find(u => u.username === username && u.password === password);
    if (user) {
      currentUser = user;
      saveCurrentUserToLocalStorage(); // currentUserを保存
      showProfile();
    } else {
      alert('ユーザー名またはパスワードが間違っています。');
    }
  }

  function logout() {
    currentUser = null;
    saveCurrentUserToLocalStorage(); // currentUserを削除
    hideAll();
    showLoginForm();
  }

  function validateRegisterForm() {
    let valid = true;
    const name = document.getElementById('registerName').value;
    const username = document.getElementById('registerUsername').value;
    const password = document.getElementById('registerPassword').value;
    const confirmPassword = document.getElementById('registerConfirmPassword').value;

    if (!name) {
      document.getElementById('registerNameError').style.display = 'block';
      valid = false;
    } else {
      document.getElementById('registerNameError').style.display = 'none';
    }

    if (!username) {
      document.getElementById('registerUsernameError').style.display = 'block';
      valid = false;
    } else {
      document.getElementById('registerUsernameError').style.display = 'none';
    }

    // ユーザー名の重複チェック
    if (users.find(u => u.username === username)) {
      document.getElementById('registerUsernameError').textContent = 'このユーザー名は既に使用されています';
      document.getElementById('registerUsernameError').style.display = 'block';
      valid = false;
    } else {
      document.getElementById('registerUsernameError').style.display = 'none';
    }

    if (!password) {
      document.getElementById('registerPasswordError').style.display = 'block';
      valid = false;
    } else {
      document.getElementById('registerPasswordError').style.display = 'none';
    }

    if (password !== confirmPassword) {
      document.getElementById('registerConfirmPasswordError').style.display = 'block';
      valid = false;
    } else {
      document.getElementById('registerConfirmPasswordError').style.display = 'none';
    }

    return valid;
  }

  function register() {
    if (!validateRegisterForm()) {
      return;
    }

    const name = document.getElementById('registerName').value;
    const username = document.getElementById('registerUsername').value;
    const password = document.getElementById('registerPassword').value;

    users.push({ name, username, password, profileImage: null });
    saveUsersToLocalStorage(); // ユーザー情報を保存
    alert('登録が完了しました！ログインしてください。');
    showLoginForm();
  }

  // プロフィール画像の処理
  function loadProfileImage() {
    const profileImg = document.getElementById('profileImg');
    // プロフィール画像が設定されている場合はその画像を表示
    if (currentUser.profileImage) {
      profileImg.src = currentUser.profileImage;
    } else {
      // デフォルトのプロフィール画像を表示
      profileImg.src = 'default_profile_img.jpg';
    }
  }

  function uploadProfileImage() {
    const input = document.getElementById('profileImageInput');
    const file = input.files[0];
    if (file) {
      // FileReaderを使用して画像を読み込む
      const reader = new FileReader();
      reader.onload = function(e) {
        // 読み込んだ画像をプロフィール画像として設定
        currentUser.profileImage = e.target.result;
        // プロフィール画像を更新して表示
        loadProfileImage();
        saveUsersToLocalStorage(); // プロフィール画像を保存
        saveCurrentUserToLocalStorage(); // currentUserを更新
      }
      reader.readAsDataURL(file);
    }
  }

  // AIBOT投稿を登録
  function registerAiBotPost() {
    const content = document.getElementById('aiBotContent').value;
    if (content.trim() !== '') {
      aiBotPosts.push(content);
      saveAiBotPostsToLocalStorage();
      alert("BOTの投稿が登録されました！");
      document.getElementById('aiBotContent').value = ''; // 入力欄を空にする
    }
  }

  // AIBOTが定期的に投稿
  function postAiBotContent() {
    if (aiBotPosts.length > 0) {
      const content = aiBotPosts[Math.floor(Math.random() * aiBotPosts.length)];
      const aiUser = {
        name: 'BOT',
        username: 'bot',
        profileImage: 'default_ai_profile_img.jpg'
      };
      const post = {
        id: Date.now(),
        content: content,
        author: aiUser.name,
        authorUsername: aiUser.username,
        authorProfileImage: aiUser.profileImage,
        likes: 0,
        comments: []
      };
      posts.unshift(post);
      savePostsToLocalStorage();
      displayTimeline();
    }
  }

  setInterval(postAiBotContent, 500000); // 50,000ミリ秒 = 50秒

  // マルコフ連鎖を使用した自動投稿BOT
  function generateMarkovChainText(order = 2) {
    const allTexts = posts.map(post => post.content).join(' ');
    if (allTexts.length < 100) return null; // テキストが短すぎる場合は生成しない

    const markov = new RiTa.Markov(order);
    markov.addText(allTexts);
    const sentences = markov.generate(1);
    return sentences[0];
  }

  function postMarkovBotContent() {
    const generatedText = generateMarkovChainText(3); // 階数を3に設定
    if (generatedText) {
      const botUser = {
        name: 'MarkovBot',
        username: 'markovbot',
        profileImage: 'markov_bot_profile_img.jpg'
      };
      const post = {
        id: Date.now(),
        content: generatedText,
        author: botUser.name,
        authorUsername: botUser.username,
        authorProfileImage: botUser.profileImage,
        likes: 0,
        comments: []
      };
      posts.unshift(post);
      savePostsToLocalStorage();
      displayTimeline();
    }
  }

  setInterval(postMarkovBotContent, markovBotInterval); // マルコフ連鎖BOTの投稿間隔

  // 投稿関連の関数
  function createPost() {
    const postContent = document.getElementById('postContent').value;
    if (postContent.trim() !== '') {
      const post = {
        id: Date.now(),
        content: postContent,
        author: currentUser.name,
        authorUsername: currentUser.username,
        authorProfileImage: currentUser.profileImage,
        likes: 0,
        comments: [],
        shares: 0
      };
      posts.unshift(post); // 最新の投稿を先頭に追加
      savePostsToLocalStorage(); // 投稿を保存
      displayTimeline();
      document.getElementById('postContent').value = ''; // 投稿後、入力欄を空にする
    }
  }

  function displayTimeline() {
    const timeline = document.getElementById('timeline');
    timeline.innerHTML = '';
    posts.forEach(post => {
      const postElement = document.createElement('div');
      postElement.classList.add('card', 'mb-3');
      postElement.innerHTML = `
        <div class="card-body">
          <div class="d-flex align-items-center mb-3">
            <img src="${post.authorProfileImage || 'default_profile_img.jpg'}" class="profile-img mr-2" alt="プロフィール画像">
            <div>
              <strong>${post.author}</strong> (@${post.authorUsername})
              ${post.shared ? '<span class="badge badge-info ml-2">シェア</span>' : ''}
            </div>
          </div>
          <p class="card-text">${post.content}</p>
          ${post.link ? `<a href="${post.link}" target="_blank" class="btn btn-link">続きを読む</a>` : ''}
          <div class="d-flex justify-content-between">
            <div>
              <button onclick="likePost(${post.id})" class="btn btn-primary btn-sm"><i class="fas fa-thumbs-up"></i> いいね (${post.likes})</button>
              <button onclick="toggleComments(${post.id})" class="btn btn-secondary btn-sm"><i class="fas fa-comments"></i> コメント (${post.comments.length})</button>
              <button onclick="replyToPost(${post.id})" class="btn btn-info btn-sm"><i class="fas fa-reply"></i> 返信</button>
              <button onclick="sharePost(${post.id})" class="btn btn-share btn-sm"><i class="fas fa-share"></i> シェア (${post.shares || 0})</button>
              <button onclick="shareToTwitter(${post.id})" class="btn btn-share-twitter btn-sm"><i class="fab fa-twitter"></i> Xでシェア</button>
            </div>
            <small class="text-muted">${new Date(post.id).toLocaleString()}</small>
          </div>
          <div id="comments-${post.id}" class="comment-section mt-3" style="display: none;">
            ${post.comments.map(comment => `
              <div class="card mb-2">
                <div class="card-body">
                  <p><strong>${comment.author}</strong>: ${comment.content}</p>
                </div>
              </div>
            `).join('')}
          </div>
        </div>
      `;
      timeline.appendChild(postElement);
    });
  }

  // いいね機能
  function likePost(postId) {
    const post = posts.find(p => p.id === postId);
    post.likes++;
    savePostsToLocalStorage();
    displayTimeline();
  }

  // コメント表示切替
  function toggleComments(postId) {
    const commentSection = document.getElementById(`comments-${postId}`);
    commentSection.style.display = commentSection.style.display === 'none' ? 'block' : 'none';
  }

  // リプライ機能
  function replyToPost(postId) {
    const modal = document.getElementById('replyModal');
    modal.dataset.postId = postId;
    $('#replyModal').modal('show');
  }

  function postReply() {
    const postId = parseInt(document.getElementById('replyModal').dataset.postId);
    const post = posts.find(p => p.id === postId);
    const replyContent = document.getElementById('replyContent').value;
    if (replyContent.trim() !== '') {
      post.comments.push({ author: currentUser.name, content: replyContent });
      $('#replyModal').modal('hide');
      savePostsToLocalStorage();
      displayTimeline();
    } else {
      alert('返信を入力してください。');
    }
  }

  // 投稿のシェア機能
  function sharePost(postId) {
    const post = posts.find(p => p.id === postId);
    if (post) {
      const sharedPost = {
        ...post,
        id: Date.now(),
        author: currentUser.name,
        authorUsername: currentUser.username,
        authorProfileImage: currentUser.profileImage,
        shared: true,
        likes: 0,
        comments: [],
        shares: post.shares ? post.shares + 1 : 1
      };
      posts.unshift(sharedPost);
      savePostsToLocalStorage();
      displayTimeline();
      alert('投稿をシェアしました。');
    }
  }

  // X（旧Twitter）にシェアする機能
  function shareToTwitter(postId) {
    const post = posts.find(p => p.id === postId);
    if (post) {
      let shareText = post.content;
      if (post.link) {
        shareText += ' ' + post.link;
      }
      const shareUrl = `https://twitter.com/intent/tweet?text=${encodeURIComponent(shareText)}&url=${encodeURIComponent(window.location.href)}`;
      window.open(shareUrl, '_blank');
    }
  }

  // FEEDの登録と自動投稿機能
  function registerFeed() {
    const feedUrl = document.getElementById('feedUrl').value;
    if (feedUrl.trim() !== '') {
      feeds.push(feedUrl);
      saveFeedsToLocalStorage(); // フィード情報を保存
      alert('RSSフィードが登録されました！');
      document.getElementById('feedUrl').value = ''; // 登録後、入力欄を空にする
    } else {
      document.getElementById('feedUrlError').style.display = 'block';
    }
  }

  function fetchFeeds() {
    feeds.forEach(feedUrl => {
      fetch(`https://api.rss2json.com/v1/api.json?rss_url=${encodeURIComponent(feedUrl)}`)
        .then(response => response.json())
        .then(data => {
          data.items.forEach(item => {
            // 同じ投稿が既に存在するかチェック
            if (!posts.some(p => p.link === item.link)) {
              const post = {
                id: Date.now() + Math.random(), // 重複しないIDを生成
                content: item.title,
                link: item.link, // リンクを追加
                author: 'FEEDBOT',
                authorUsername: 'feedbot',
                authorProfileImage: 'feedbot_profile_img.jpg', // FEEDBOTのプロフィール画像を設定
                likes: 0,
                comments: []
              };
              posts.unshift(post); // 最新の投稿を先頭に追加
              savePostsToLocalStorage(); // 投稿を保存
            }
          });
          displayTimeline(); // タイムラインを表示
        })
        .catch(error => console.error('RSSフィードの取得エラー:', error));
    });
  }

  function setFeedInterval() {
    const intervalInput = document.getElementById('feedInterval').value;
    if (intervalInput && parseInt(intervalInput) > 0) {
      feedFetchInterval = parseInt(intervalInput) * 1000; // ミリ秒に変換
      clearInterval(feedFetchTimer);
      feedFetchTimer = setInterval(fetchFeeds, feedFetchInterval);
      alert(`自動投稿の間隔が${intervalInput}秒に設定されました。`);
    } else {
      alert('有効な間隔を入力してください（1以上の数字）。');
    }
  }

  // ページロード時にフィードの自動取得を開始
  function startFeedFetch() {
    feedFetchTimer = setInterval(fetchFeeds, feedFetchInterval);
  }

  // 初期化
  function init() {
    loadUsersFromLocalStorage();
    loadPostsFromLocalStorage();
    loadFeedsFromLocalStorage();
    loadAiBotPostsFromLocalStorage();
    loadCurrentUserFromLocalStorage();

    if (currentUser) {
      showProfile();
    } else {
      hideAll();
      document.getElementById('loginForm').style.display = 'block';
    }

    displayTimeline();
    startFeedFetch(); // フィードの自動取得を開始
  }

  // ページロード時に初期化
  window.onload = init;

</script>

</body>
</html>

PHP array_map

<?php
// $addFive = function($n)
// {
//     return $n + 5;
// };
// $addFive = fn($n) => $n + 5;

$scores = [70, 90, 80];
// $updatedScores = array_map($addFive, $scores);
$updatedScores = array_map(fn($n) => $n + 5, $scores);
print_r($updatedScores);

chat.html

<!DOCTYPE html>
<html lang="ja">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>ローカルチャットシステム</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f4f4f4;
            margin: 0;
            padding: 0;
        }
        .chat-container {
            width: 80%;
            max-width: 600px;
            margin: 50px auto;
            background-color: white;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            border-radius: 8px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            height: 600px;
        }
        .chat-header {
            background-color: #007bff;
            color: white;
            padding: 10px;
            text-align: center;
            font-size: 18px;
        }
        .chat-messages {
            flex-grow: 1;
            overflow-y: scroll;
            padding: 10px;
            background-color: #fafafa;
        }
        .chat-message {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        .chat-message .username {
            font-weight: bold;
            margin-right: 5px;
        }
        .message-content {
            padding: 8px;
            background-color: #e9ecef;
            border-radius: 5px;
            flex-grow: 1;
        }
        .message-time {
            font-size: 12px;
            text-align: right;
            margin-left: 10px;
            color: #888;
        }
        .chat-input {
            display: flex;
            border-top: 1px solid #ddd;
        }
        .chat-input input {
            width: 100%;
            padding: 10px;
            border: none;
            outline: none;
            font-size: 16px;
        }
        .chat-input button {
            padding: 10px;
            background-color: #007bff;
            color: white;
            border: none;
            cursor: pointer;
            font-size: 16px;
        }
    </style>
</head>
<body>

<div class="chat-container">
    <div class="chat-header">
        ローカルチャットシステム
    </div>
    <div class="chat-messages" id="chat-messages">
        <!-- メッセージがここに表示される -->
    </div>
    <div class="chat-input">
        <input type="text" id="chat-input" placeholder="メッセージを入力...">
        <button id="send-button">送信</button>
    </div>
</div>

<script>
    const messagesContainer = document.getElementById('chat-messages');
    const inputField = document.getElementById('chat-input');
    const sendButton = document.getElementById('send-button');

    // ユーザー情報
    const users = ['ユーザー1', 'ユーザー2'];
    let currentUserIndex = 0;

    // メッセージを追加する関数
    function addMessage(content, username, time = new Date().toLocaleTimeString()) {
        const messageDiv = document.createElement('div');
        messageDiv.classList.add('chat-message');
        
        const userSpan = document.createElement('span');
        userSpan.classList.add('username');
        userSpan.textContent = username;
        messageDiv.appendChild(userSpan);

        const messageContent = document.createElement('div');
        messageContent.classList.add('message-content');
        messageContent.textContent = content;
        messageDiv.appendChild(messageContent);

        const timeSpan = document.createElement('span');
        timeSpan.classList.add('message-time');
        timeSpan.textContent = time;
        messageDiv.appendChild(timeSpan);

        messagesContainer.appendChild(messageDiv);

        // スクロールを最新メッセージに合わせる
        messagesContainer.scrollTop = messagesContainer.scrollHeight;
    }

    // 送信ボタンのクリックイベント
    sendButton.addEventListener('click', function() {
        const message = inputField.value;
        if (message.trim() !== '') {
            const username = users[currentUserIndex];
            currentUserIndex = (currentUserIndex + 1) % users.length;  // ユーザーを切り替え
            addMessage(message, username);  // メッセージを表示
            inputField.value = '';  // 入力フィールドをクリア
        }
    });

    // エンターキーで送信できるように
    inputField.addEventListener('keypress', function(e) {
        if (e.key === 'Enter') {
            sendButton.click();
        }
    });
</script>

</body>
</html>

PHP 配列と新しい配列

<?php
$scores = [70, 90, 80];
$updatedScorfes = [];
foreach ($scores as $score){
    $updatedScores[] = $score + 5;
}
print_r($updatedScores);

PHP 配列とforeach

<?php

$scores = [70, 90, 80];

foreach($scores as $key => $value){

echo “Score{{$key}}: {$value}” . PHP_EOL;

}

タスク管理.html

<!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>AIベースのタスク管理アプリ</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      background-color: #f4f4f9;
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    h1 {
      color: #333;
    }
    .task-container {
      width: 90%;
      max-width: 1200px;
      padding: 20px;
    }
    .task-form {
      display: flex;
      flex-direction: column;
      margin-bottom: 20px;
    }
    .task-form input, .task-form textarea {
      margin-bottom: 10px;
      padding: 10px;
      font-size: 16px;
      border: 1px solid #ccc;
      border-radius: 5px;
    }
    .task-form button {
      padding: 10px;
      background-color: #28a745;
      color: #fff;
      border: none;
      border-radius: 5px;
      cursor: pointer;
    }
    .task-form button:hover {
      background-color: #218838;
    }
    .kanban-board {
      display: flex;
      justify-content: space-around;
    }
    .kanban-column {
      background-color: #f8f9fa;
      padding: 20px;
      width: 30%;
      border-radius: 10px;
      min-height: 300px;
    }
    .kanban-column h2 {
      text-align: center;
    }
    .task-list {
      margin-top: 10px;
    }
    .task-item {
      display: flex;
      justify-content: space-between;
      background-color: #e9ecef;
      margin-bottom: 10px;
      padding: 10px;
      border-radius: 5px;
    }
    .task-item.high {
      background-color: #ffcccc;
    }
    .task-item.medium {
      background-color: #fff3cd;
    }
    .task-item.low {
      background-color: #d4edda;
    }
    .task-item button {
      background-color: #dc3545;
      color: #fff;
      border: none;
      border-radius: 5px;
      cursor: pointer;
    }
    .task-item button:hover {
      background-color: #c82333;
    }
  </style>
</head>
<body>

  <h1>タスク管理</h1>
  <div class="task-container">
    <form class="task-form" id="taskForm">
      <input type="text" id="taskTitle" placeholder="タスクタイトル" required>
      <textarea id="taskDescription" placeholder="タスク詳細" rows="4"></textarea>
      <input type="date" id="taskDueDate" required>
      <button type="submit">タスクを追加</button>
    </form>

    <div class="kanban-board">
      <div class="kanban-column" id="notStarted">
        <h2>未着手</h2>
        <div class="task-list" id="notStartedList"></div>
      </div>
      <div class="kanban-column" id="inProgress">
        <h2>進行中</h2>
        <div class="task-list" id="inProgressList"></div>
      </div>
      <div class="kanban-column" id="completed">
        <h2>完了</h2>
        <div class="task-list" id="completedList"></div>
      </div>
    </div>
  </div>

  <script>
    let tasks = JSON.parse(localStorage.getItem('tasks')) || [];

    // 優先度予測（ルールベース）
    function predictPriority(taskDueDate) {
      const daysLeft = (new Date(taskDueDate) - new Date()) / (1000 * 60 * 60 * 24);
      if (daysLeft < 2) {
        return 'High';  // 緊急度が高い
      } else if (daysLeft < 7) {
        return 'Medium';  // 1週間以内
      } else {
        return 'Low';  // 余裕がある
      }
    }

    // タスクをローカルストレージに保存
    function saveTasks() {
      localStorage.setItem('tasks', JSON.stringify(tasks));
    }

    // タスク表示
    function loadTasks() {
      const notStartedList = document.getElementById('notStartedList');
      const inProgressList = document.getElementById('inProgressList');
      const completedList = document.getElementById('completedList');

      notStartedList.innerHTML = '';
      inProgressList.innerHTML = '';
      completedList.innerHTML = '';

      tasks.forEach(task => {
        const taskItem = document.createElement('div');
        taskItem.classList.add('task-item', task.priority.toLowerCase());
        taskItem.setAttribute('draggable', true);
        taskItem.innerHTML = `
          <div>
            <strong>${task.title}</strong>
            <p>${task.description}</p>
            <small>期限: ${new Date(task.dueDate).toLocaleDateString()}</small>
            <p>優先度: ${task.priority}</p>
          </div>
          <button onclick="deleteTask('${task.id}')">削除</button>
        `;

        taskItem.addEventListener('dragstart', (e) => {
          e.dataTransfer.setData('text/plain', task.id);
        });

        if (task.status === 'notStarted') {
          notStartedList.appendChild(taskItem);
        } else if (task.status === 'inProgress') {
          inProgressList.appendChild(taskItem);
        } else if (task.status === 'completed') {
          completedList.appendChild(taskItem);
        }
      });
    }

    // タスク追加
    document.getElementById('taskForm').addEventListener('submit', (e) => {
      e.preventDefault();
      const title = document.getElementById('taskTitle').value;
      const description = document.getElementById('taskDescription').value;
      const dueDate = document.getElementById('taskDueDate').value;

      const priority = predictPriority(dueDate);

      const newTask = {
        id: Date.now().toString(),
        title,
        description,
        dueDate,
        priority,
        status: 'notStarted'  // 初期状態は未着手
      };

      tasks.push(newTask);
      saveTasks();
      document.getElementById('taskForm').reset();
      loadTasks();
    });

    // タスク削除
    function deleteTask(taskId) {
      tasks = tasks.filter(task => task.id !== taskId);
      saveTasks();
      loadTasks();
    }

    // ドラッグ&ドロップの設定
    document.querySelectorAll('.kanban-column').forEach(column => {
      column.addEventListener('dragover', (e) => {
        e.preventDefault();
      });

      column.addEventListener('drop', (e) => {
        const taskId = e.dataTransfer.getData('text/plain');
        const newStatus = column.id;

        const task = tasks.find(task => task.id === taskId);
        task.status = newStatus;
        saveTasks();
        loadTasks();
      });
    });

    // ページ読み込み時にタスクを表示
    loadTasks();
  </script>

</body>
</html>

PHP 配列の要素を変数に代入

<?php
// $scores = [70, 90, 80];
// $firstScore = $scores[0];
// $secondScore = $scores[1];
// $thirdScore = $scores[2];
// list($firstScore, $secondScore, $thirdScore) = $scores;
// [$firstScore, $secondScore, $thirdScore] = $scores;
// echo $firstScore . PHP_EOL;
// echo $secondScore . PHP_EOL;
// echo $thirdScore . PHP_EOL;

$x = 10;
$y = 20;
[$y, $x] = [$x, $y];
echo $x . PHP_EOL;
echo $y . PHP_EOL;

PHP 配列の要素を入れ替える

<?php
$scores = [70, 90, 80];
// sort($scores);
// print_r($scores);
// rsort($scores);
// print_r($scores);
// asort($scores);
// print_r($scores);
// arsort($scores);
// print_r($scores);
// shuffle($scores);
// print_r($scores);
$reversed = array_reverse($scores);
print_r($reversed);

PHP array_splice

<?php
$scores = [70, 90, 80];
array_splice($scores, 1, 0, [30, 20]);
array_splice($scores, 2, 1);
$removedItems = array_splice($scores, 1, 1, [10, 15]);
print_r($scores);
print_r($removedItems);