"模式"对话框显示映射阵列的所有元素.如何通过ts和react js来选择每个项目

Question

此代码：如何在使用react和typescript单击按钮时显示对话框？我想打开对话框从每一个todos，如何使它？我使用了react js和typescript。帮我解决这个问题。

interface ListProps {
todos: INote[];
onDelete: (title: string) => void;
}
const TodoList: React.FunctionComponent<ListProps> = ({ todos, onDelete }) => {
const [showAlert, setShowAlert] = useState(false);
const [todo, setTodos] = useState(null);

如何通过ts选择每个项目？它不起作用。原因是什么？谢谢

const handleOpenDialog = (todos: any) => {
setTodos(todos);
setShowAlert(true);
};
const handleCloseDialog = () => {
setShowAlert(false);
};
return (
<>
<section className="list list--wrapper">
{todos.map((todos) => (
<div className="item list__item" key={todos.title}>
<span className="item__title">{todos.title}</span>
<div className="item__group">
<input
className="item__completed"
type="checkbox"
checked={todos.completed}
/>
<span className="item__decs">{todos.desc}</span>
</div>
<div className="item__btn">
<button
className="item__btnd"
onClick={() => handleOpenDialog(todos)}
>
Delete
</button>
<button className="item__btne">Edit</button>
</div>
{showAlert && todo && (
<AlertDialog
handleCloseDialog={handleCloseDialog}
title={todos.title}
/>
)}
</div>
))}
</section>
</>
);
};
export default TodoList;

Answer 1

只需添加一个条件，仅显示选定todos 上的AlertDialog

<section className="list list--wrapper">
{todos.map((todos) => (
<div className="item list__item" key={todos.title}>
<span className="item__title">{todos.title}</span>
<div className="item__group">
<input
className="item__completed"
type="checkbox"
checked={todos.completed}
/>
<span className="item__decs">{todos.desc}</span>
</div>
<div className="item__btn">
<button
className="item__btnd"
onClick={() => handleOpenDialog(todos)}
>
Delete
</button>
<button className="item__btne">Edit</button>
</div>
{showAlert && todos.title===todo?.title && (
<AlertDialog
handleCloseDialog={handleCloseDialog}
title={todos.title}
/>
)}
</div>
))}
</section>

或者只需将AlertDialog移动到地图之外

<section className="list list--wrapper">
{todos.map((todos) => (
<div className="item list__item" key={todos.title}>
<span className="item__title">{todos.title}</span>
<div className="item__group">
<input
className="item__completed"
type="checkbox"
checked={todos.completed}
/>
<span className="item__decs">{todos.desc}</span>
</div>
<div className="item__btn">
<button
className="item__btnd"
onClick={() => handleOpenDialog(todos)}
>
Delete
</button>
<button className="item__btne">Edit</button>
</div>
</div>
))}
{showAlert && todo && (
<AlertDialog
handleCloseDialog={handleCloseDialog}
title={todos.title}
/>
)}
</section>