Created
December 24, 2018 22:16
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| import React, { useState } from "react"; | |
| function App() { | |
| const [todos, updateTodos] = useState([]); | |
| const [currentTodo, updateTodo] = useState(""); | |
| return ( | |
| <div className="App"> | |
| <h3>Todos</h3> | |
| {todos.map(({ todo, ts }) => ( | |
| <li key={ts}> | |
| {todo} | |
| <button | |
| onClick={() => | |
| updateTodos(todos.filter(({ ts: todoTs }) => todoTs !== ts)) | |
| } | |
| > | |
| X | |
| </button> | |
| </li> | |
| ))} | |
| <input | |
| type="text" | |
| value={currentTodo} | |
| placeholder="Enter a todo..." | |
| onChange={e => updateTodo(e.target.value)} | |
| onKeyPress={e => { | |
| if (e.key === "Enter" && currentTodo) { | |
| updateTodos([...todos, { todo: currentTodo, ts: Date.now() }]); | |
| updateTodo(""); | |
| } | |
| }} | |
| /> | |
| </div> | |
| ); | |
| } | |
| export default App; |
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