左右折叠js

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>左右折叠示例</title>
    <style>
        .sidebar {
            width: 250px;
            height: 100%;
            position: fixed;
            top: 0;
            left: -250px;
            transition: left 0.3s ease;
            background-color: #f4f4f4;
        }
        .sidebar.open {
            left: 0;
        }
        .content {
            margin-left: 0;
            transition: margin-left 0.3s ease;
        }
        .content.open {
            margin-left: 250px;
        }
    </style>
</head>
<body>
    <button id="toggleButton">Toggle Sidebar</button>
    <div class="sidebar" id="sidebar">
        <!-- 侧边栏内容 -->
    </div>
    <div class="content" id="content">
        <!-- 主要内容 -->
    </div>

    <script>
        document.getElementById('toggleButton').addEventListener('click', function() {
            var sidebar = document.getElementById('sidebar');
            var content = document.getElementById('content');
            sidebar.classList.toggle('open');
            content.classList.toggle('open');
        });
    </script>
</body>
</html>