Improving accessibility in a React app without sacrificing performance
I'm stuck on something that should probably be simple. Currently developing a React application where accessibility is a major focus. I've been trying to implement ARIA attributes correctly, but I’m uncertain about the best practices to follow. For instance, I have a dropdown component that I've set up like this: ```javascript const Dropdown = () => { const [isOpen, setIsOpen] = useState(false); return ( <div> <button aria-haspopup="true" aria-expanded={isOpen} onClick={() => setIsOpen(!isOpen)} > Select an option </button> {isOpen && <ul role="menu"> <li role="menuitem">Option 1</li> <li role="menuitem">Option 2</li> </ul>} </div> ); }; ``` While this setup includes some ARIA attributes, I’ve read that using `aria-hidden` for elements not in use could enhance the experience further. Should I be using `aria-hidden="true"` for the dropdown list when it’s closed? Also, how can I make sure that the dropdown closes when an item is selected? I’ve attempted to manage the state of accessibility attributes, but it feels clunky. Using the `onBlur` event to close the dropdown doesn’t seem enough because keyboard users might find it difficult to navigate back once they open the menu. Moreover, I tried adding a keyboard listener to close the dropdown on `ESC` key press, which works, but I feel like this might not be a complete solution. Should I also consider using hooks like `useEffect` to manage focus when the dropdown opens? I found that focusing on the first menu item improves keyboard navigation, but I’m unsure how to implement this efficiently without causing side effects. I’m also curious about the balance between accessibility and performance. Implementing all these accessibility features seems to be adding complexity. How can I ensure that my application remains user-friendly for all while keeping the performance in check? Any guidance or examples would be greatly appreciated! My development environment is Linux. This is part of a larger API I'm building.