jquery箭头隐藏展开

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>jQuery 箭头函数示例</title>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <style>
        .hidden {
            display: none;
        }
    </style>
</head>
<body>
    <button id="toggleButton">Toggle</button>
    <div id="content" class="hidden">
        这是一个隐藏的内容。
    </div>

    <script>
        $(document).ready(() => {
            $('#toggleButton').click(() => {
                $('#content').toggleClass('hidden');
            });
        });
    </script>
</body>
</html>

const obj = {
    name: 'Alice',
    greet: function() {
        setTimeout(() => {
            console.log(`Hello, ${this.name}`);
        }, 1000);
    }
};

obj.greet(); // 输出: Hello, Alice

<script src="https://cdn.jsdelivr.net/npm/@babel/polyfill@7.12.1/dist/polyfill.min.js"></script>