<div id="root">
</div>
const App = () => {
const [ todoList, setTodoList ] = React.useState([]);
const addTodo = (event) => {
const input = document.querySelector('#todoInput');
setTodoList([
...todoList,
{
id: Date.now(),
name: input.value,
status: false,
}
])
input.value = '';
};
const updateTodo = (event) => {
const { id } = event.target.dataset;
console.log(id)
const newTodoList = todoList.map((todo) => {
if(todo.id === Number(id)) {
todo.status = !todo.status;
}
return todo;
});
setTodoList([ ...newTodoList ]);
}
const remoteAllTodo = () => {
}
return (
<div>
<div className="bg-indigo-500 p-5 h-screen">
<div className="max-w-[768px] m-auto bg-white p-5">
<h1 className="text-center text-2xl mb-4">React ToDoList</h1>
<div className="flex">
<input id="todoInput" type="text" className="w-full rounded-l-lg border-l-2 border-y-2 border-indigo-300 pl-4 focus:outline-indigo-500 focus:outline-none focus:outline-offset-0" placeholder="請輸入你的代辦事項" />
<button onClick={ addTodo } className="w-[50px] h-[50px] border-0 bg-sky-500 hover:bg-sky-600 rounded-r-lg text-white transition duration-700">+</button>
</div>
<ul>
{
todoList.map((todo) => (
<li className="py-4" key={ todo.id } data-id={ todo.id } >
<label className={ todo.status ? 'line-through' : ''}>
<input onChange={ updateTodo } type="checkbox" className="mr-2" data-id={ todo.id } checked={ todo.status }/>
{ todo.name }
</label>
</li>
))
}
</ul>
<div className="flex justify-between items-center">
<p>
目前有 <span className="font-medium">{ todoList.length }</span> 個事項待完成
</p>
<button onClick={ remoteAllTodo } type="button" className="bg-red-300 p-2 rounded-md hover:bg-red-400 transition duration-700">Clear All Todo</button>
</div>
</div>
</div>
</div>
)
}
const root = ReactDOM.createRoot(document.querySelector('#root'));
root.render(<App />);
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