js全屏导航代码

以下是一个使用 JavaScript 实现全屏导航的示例代码：

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    /* 样式可根据需要进行调整 */
    body {
      margin: 0;
      padding: 0;
      font-family: Arial, sans-serif;
    }

   .nav {
      display: flex;
      justify-content: space-around;
      background-color: #333;
      padding: 10px 0;
    }

   .nav a {
      color: #fff;
      text-decoration: none;
      font-size: 20px;
    }

    /* 全屏样式 */
   .fullscreen {
      width: 100vw;
      height: 100vh;
      position: fixed;
      top: 0;
      left: 0;
      background-color: rgba(0, 0, 0, 0.5);
      display: none; /* 初始隐藏 */
      z-index: 1000;
    }

   .fullscreen-content {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;
      padding: 20px;
      border-radius: 5px;
    }
  </style>
</head>

<body>

  <div class="nav">
    <a href="#" id="openFullscreen">打开全屏导航</a>
  </div>

  <div class="fullscreen" id="fullscreen">
    <div class="fullscreen-content">
      <a href="#" id="closeFullscreen">关闭</a>
      <ul>
        <li><a href="#">首页</a></li>
        <li><a href="#">关于我们</a></li>
        <li><a href="#">服务</a></li>
        <li><a href="#">联系我们</a></li>
      </ul>
    </div>
  </div>

  <script>
    const openBtn = document.getElementById('openFullscreen');
    const closeBtn = document.getElementById('closeFullscreen');
    const fullscreen = document.getElementById('fullscreen');

    openBtn.addEventListener('click', () => {
      fullscreen.style.display = 'block';
    });

    closeBtn.addEventListener('click', () => {
      fullscreen.style.display = 'none';
    });
  </script>

</body>

</html>

在上述代码中：