Created
May 28, 2021 07:26
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import React, { useState } from 'react'; | |
import './App.css'; | |
const App = () => { | |
const [todoList, setTodoList] = useState([]); | |
const [todoName, setTodoName] = useState(''); | |
const addTodo = (e) => { | |
e.preventDefault(); | |
setTodoList(prevList => { | |
const newTodo = { | |
name: todoName, | |
id: prevList.length + 1, | |
done: false, | |
} | |
return [newTodo, ...prevList]; | |
}); | |
setTodoName(''); | |
} | |
const removeTodo = (id) => { | |
setTodoList(prevList => { | |
return prevList.filter((item) => item.id !== id); | |
}) | |
} | |
const toggleTodo = (id) => { | |
setTodoList(prevList => { | |
return prevList.map((item) => { | |
if (item.id === id) { | |
item.done = !item.done; | |
} | |
return item; | |
}); | |
}) | |
} | |
const changeTodoName = (e) => { | |
setTodoName(e.target.value); | |
} | |
return ( | |
<div className="container"> | |
<form onSubmit={addTodo}> | |
<input | |
placeholder="Add todo" | |
value={todoName} | |
onChange={changeTodoName} | |
/> | |
</form> | |
<ul> | |
{todoList.map((todo) => ( | |
<li | |
key={todo.id} | |
> | |
<button onClick={() => removeTodo(todo.id)}>×</button> | |
<span className={todo.done ? 'done todo-name' : 'todo-name'} onClick={() => toggleTodo(todo.id)}>{todo.name}</span> | |
</li> | |
))} | |
</ul> | |
</div> | |
) | |
} | |
export default App; |
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