使用JavaScript代码根据事件监听实现表单取得焦点的功能。以下是示例代码：

HTML代码：

JavaScript代码： const form = document.querySelector('form'); const nameInput = document.querySelector('#name'); const emailInput = document.querySelector('#email');

nameInput.addEventListener('focus', () => { form.classList.add('focused'); });

emailInput.addEventListener('focus', () => { form.classList.add('focused'); });

nameInput.addEventListener('blur', () => { form.classList.remove('focused'); });

emailInput.addEventListener('blur', () => { form.classList.remove('focused'); });

CSS代码： form { border: 1px solid #ccc; padding: 10px; }

.focused { border-color: blue; }