Summary  
This chapter covers how to implement code that filters displayed elements by attaching click handlers to buttons and using data attributes with DOM manipulation to show or hide items based on the selected category.

General domain of usage  
Blog websites

## 目標
最後に、記事をトピックごとにフィルタリングする機能を追加します。この機能はJavaScriptを使用して実装します。

## 参考プロンプト
HTMLボタンとJavaScriptを使って、記事をトピックごとにフィルタリングする機能を実装できますか？

## 結果
**index.html ファイル**
- フィルタリングボタンを配置するため、`nav`内に`header`ブロックを追加します。
- 各記事に`data-category`属性と対応するトピック値を付与します。
- 閉じる`index.js`タグの直前に`body`ファイルへのリンクを追加します。

**index.css ファイル**<br>
フィルタリングボタンの見た目を整えるためにスタイルを追加します。

**index.js ファイル**<br>
フィルタリングロジックを実装するスクリプトを貼り付けます。


これらはすべてChatGPTの指示に従って実施しました。

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>My Blog</title>
    <link rel="stylesheet" href="index.css" />
  </head>
  <body>
    <header>
      <h1>Welcome to My Blog</h1>
      <nav>
        <button onclick="filterArticles('all')">All</button>
        <button onclick="filterArticles('Environment')">Environment</button>
        <button onclick="filterArticles('Health')">Health</button>
      </nav>
    </header>

    <main>
      <article data-category="Health">
        <h2>Unlocking the Power of Daily Habits for Optimal Health</h2>
        <p>
          Maintaining optimal health is a multifaceted endeavor, often achieved through the
          consistent practice of healthy habits. Nutrition plays a pivotal role in our overall
          well-being, serving as the foundation for vitality and disease prevention. Embracing a
          balanced diet rich in fruits, vegetables, lean proteins, and whole grains fuels our bodies
          with essential nutrients while fortifying our immune systems. Moreover, prioritizing
          hydration ensures proper bodily functions and supports cognitive performance. By
          integrating mindful eating practices and staying hydrated, individuals can enhance their
          energy levels, promote weight management, and reduce the risk of chronic conditions such
          as heart disease and diabetes.
        </p>
        <img
          src="https://images.unsplash.com/photo-1477332552946-cfb384aeaf1c?q=80&w=2940&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D"
          alt="Unlocking the Power of Daily Habits for Optimal Health"
          width="360"
        />
        <p>
          In addition to nutrition, regular physical activity is paramount for maintaining optimal
          health. Engaging in moderate exercise for at least 30 minutes most days of the week offers
          a myriad of benefits, including improved cardiovascular health, strengthened muscles and
          bones, and enhanced mood. Furthermore, consistent exercise helps manage stress levels and
          promotes better sleep quality, crucial components of overall well-being. By incorporating
          enjoyable physical activities into daily routines, individuals can cultivate sustainable
          habits that contribute to a healthier, more fulfilling life. Through the synergy of
          nutritious eating and regular exercise, individuals can unlock the power of daily habits
          to optimize their health and vitality.
        </p>
        <p>Category: <strong>Health</strong></p>
      </article>

      <article data-category="Environment">
        <h2>The Crucial Role of Daily Actions in Environmental Preservation</h2>
        <p>
          Environmental preservation is a collective responsibility that hinges on the daily actions
          of individuals. Simple yet impactful habits can significantly contribute to the health of
          our planet. One such practice is reducing waste through mindful consumption and recycling.
          By choosing reusable products, minimizing single-use plastics, and properly sorting
          recyclables, individuals can decrease the amount of waste that ends up in landfills and
          oceans. This, in turn, helps protect wildlife and reduces pollution. Moreover, supporting
          sustainable products and practices, such as purchasing locally-sourced and eco-friendly
          goods, can further diminish our environmental footprint.
        </p>
        <img
          src="https://images.unsplash.com/photo-1535914254981-b5012eebbd15?q=80&w=2940&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D"
          alt="The Crucial Role of Daily Actions in Environmental Preservation"
          width="360"
        />
        <p>
          Another critical aspect of environmental preservation is energy conservation. Small
          changes in our daily routines can lead to substantial energy savings. For instance,
          turning off lights when not in use, unplugging electronic devices, and utilizing
          energy-efficient appliances can significantly reduce household energy consumption.
          Additionally, opting for public transportation, carpooling, or using alternative modes of
          transport like cycling or walking can decrease greenhouse gas emissions. These practices
          not only help mitigate climate change but also promote cleaner air and healthier
          communities. By integrating these environmentally conscious habits into our daily lives,
          we can collectively make a significant impact on preserving the planet for future
          generations.
        </p>
        <p>Category: <strong>Environment</strong></p>
      </article>

      <article data-category="Health">
        <h2>The Importance of Mental Health in Overall Well-Being</h2>
        <p>
          Mental health is an integral component of overall well-being, influencing how we think,
          feel, and act in our daily lives. It plays a crucial role in determining how we handle
          stress, relate to others, and make choices. Promoting mental health starts with
          recognizing and addressing the signs of mental health issues, such as prolonged stress,
          anxiety, and depression. Regular mental health check-ins, whether through self-reflection
          or professional counseling, can help individuals manage their emotions and maintain a
          balanced outlook on life. Prioritizing mental health can lead to improved relationships,
          productivity, and a better quality of life.
        </p>
        <img
          src="https://images.unsplash.com/photo-1506126613408-eca07ce68773?q=80&w=2202&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D"
          alt="The Importance of Mental Health in Overall Well-Being"
          width="360"
        />
        <p>
          Incorporating mental health practices into daily routines is essential for sustaining
          mental well-being. Techniques such as mindfulness, meditation, and regular physical
          activity can reduce stress and enhance mood. Mindfulness encourages present-moment
          awareness, helping individuals manage overwhelming thoughts and emotions. Similarly,
          meditation promotes relaxation and mental clarity, while physical activity releases
          endorphins, which are natural mood lifters. Ensuring adequate sleep, maintaining a healthy
          diet, and fostering social connections also contribute to mental resilience. By embedding
          these practices into daily life, individuals can support their mental health, leading to a
          more balanced and fulfilling life.
        </p>
        <p>Category: <strong>Health</strong></p>
      </article>
    </main>

    <footer>
      <p>&copy; My Blog. All rights reserved.</p>
    </footer>

    <script src="index.js"></script>
  </body>
</html>

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

ZnVuY3Rpb24gZmlsdGVyQXJ0aWNsZXMoY2F0ZWdvcnkpIHsKICBjb25zdCBhcnRpY2xlcyA9IGRvY3VtZW50LnF1ZXJ5U2VsZWN0b3JBbGwoIm1haW4gYXJ0aWNsZSIpOwoKICBhcnRpY2xlcy5mb3JFYWNoKGFydGljbGUgPT4gewogICAgaWYgKGNhdGVnb3J5ID09PSAiYWxsIiB8fCBhcnRpY2xlLmdldEF0dHJpYnV0ZSgiZGF0YS1jYXRlZ29yeSIpID09PSBjYXRlZ29yeSkgewogICAgICBhcnRpY2xlLnN0eWxlLmRpc3BsYXkgPSAiIjsKICAgIH0gZWxzZSB7CiAgICAgIGFydGljbGUuc3R5bGUuZGlzcGxheSA9ICJub25lIjsKICAgIH0KICB9KTsKfQ==

おめでとうございます。やりました。**これがあなたの完成した、完全に機能するウェブサイトです。**素晴らしい成果です！

なぜ各 `data-category` 要素に `data-category="Health"` 属性（例: `<article>`）を追加するのでしょうか？

ChatGPTなどのAIツールを活用しながら、ウェブ開発の基礎を学びます。HTML、CSS、JavaScriptがウェブサイト構築において果たす役割と、AIがコーディングの速度や創造性をどのように高めるかを理解します。効果的なプロンプトの作成や、ChatGPTを用いたコード生成を実践します。AI支援開発を活用して、ゼロから完全なブログウェブサイトを構築し、ウェブプロジェクトに役立つ実践的なスキルを身につけます。

ウェブ開発の主要な概念と技術、そして現代のコーディングにおけるAIの役割について紹介します。このセクションでは、ウェブ開発の基礎と、AIがコーディングにおける生産性、創造性、効率性をどのように向上させるかを取り上げ、学習の基盤を築きます。

ウェブ開発の基本的な技術を学びます。HTML、CSS、JavaScriptの基礎を掘り下げ、それぞれの機能とデジタル環境を形成する上での役割を解明します。

ChatGPTの強力な機能を探求し、その活用方法を学びます。プロンプトの作成やChatGPTを使ったコーディング作業についての知見を得られます。さまざまなアプリケーションでChatGPTを活用するための実践的なヒントも紹介します。

ブログウェブサイトを構築します。ChatGPTを活用したさまざまなウェブ開発技術を取り入れ、ゼロから完全かつ機能的なブログウェブサイトを作成します。

フィルタリング機能の実装

目標

参考プロンプト

結果

ウェブサイトの状態

ビデオチュートリアル