程序会自己抛出错误，干嘛还要写 try catch？

const TodoListContainer = () => {const [todos, setTodos] = useState([]);
useEffect(() => {const fetchData = async () =>
 {try 
{const response = await fetch('https://jsonplaceholder.typicode.com/todos');
const data = await response.json();
setTodos(data.slice(0, 5));}
 catch (error) 
{
console.error('Error fetching todos:', error);
}
};fetchData();}, []);
return <TodoList todos={todos} />;};