Vollständige Ellmann-Todo-App implementiert und zum einfacheren Verständnis reduziert (keine Fehler, keine Statistiken, kein Delete All
This commit is contained in:
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* {
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box-sizing: border-box;
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}
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body {
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margin: 0;
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min-width: 320px;
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min-height: 100vh;
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font-family: Arial, Helvetica, sans-serif;
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background: #eef2f7;
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color: #172033;
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}
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button, input, select {
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font: inherit;
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}
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button {
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cursor: pointer;
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}
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.app {
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display: flex;
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justify-content: center;
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padding: 48px 20px;
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}
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.todo-card {
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width: 100%;
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max-width: 850px;
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padding: 32px;
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background: white;
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border-radius: 14px;
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box-shadow: 0 12px 35px rgba(23, 32, 51, 0.12);
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}
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header h1 {
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margin: 4px 0 8px;
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}
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.eyebrow {
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margin: 0;
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font-size: 0.85rem;
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font-weight: bold;
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text-transform: uppercase;
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letter-spacing: 0.08em;
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color: #3159a6;
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}
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.todo-form {
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display: grid;
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grid-template-columns: 1fr 160px auto;
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gap: 16px;
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align-items: end;
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margin: 32px 0 20px;
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}
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.form-field {
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display: flex;
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flex-direction: column;
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gap: 6px;
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}
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.form-field label {
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font-weight: bold;
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}
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.form-field input,
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.form-field select {
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min-height: 44px;
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padding: 10px 12px;
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border: 1px solid #aeb8c8;
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border-radius: 6px;
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}
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.form-field input:focus,
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.form-field select:focus {
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outline: 3px solid rgba(49, 89, 166, 0.2);
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border-color: #3159a6;
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}
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.primary-button,
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.secondary-button,
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.delete-button {
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min-height: 44px;
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padding: 10px 16px;
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border-radius: 6px;
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font-weight: bold;
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}
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.primary-button {
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border: 1px solid #244987;
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background: #3159a6;
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color: white;
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}
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.secondary-button {
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margin-top: 20px;
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border: 1px solid #3159a6;
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background: white;
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color: #3159a6;
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}
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.delete-button {
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border: 1px solid #b32d2d;
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background: white;
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color: #9d2020;
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}
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.statistics {
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display: flex;
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gap: 24px;
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padding: 12px 16px;
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background: #f4f6fa;
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border-radius: 8px;
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}
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.statistics p {
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margin: 0;
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}
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.todo-list {
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display: flex;
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flex-direction: column;
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gap: 12px;
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margin: 24px 0 0;
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padding: 0;
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list-style: none;
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}
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.todo-item {
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display: grid;
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grid-template-columns: 1fr auto auto;
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gap: 16px;
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align-items: center;
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padding: 14px;
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border: 1px solid #d3d9e3;
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border-radius: 8px;
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}
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.todo-content {
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display: flex;
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gap: 12px;
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align-items: center;
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}
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.todo-content input {
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width: 20px;
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height: 20px;
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}
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.todo-item.completed .todo-text {
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text-decoration: line-through;
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color: #687386;
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}
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.priority {
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padding: 5px 9px;
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border-radius: 999px;
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font-size: 0.8rem;
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font-weight: bold;
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}
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.priority-low { background: #e8f5ec; }
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.priority-normal { background: #e8eef9; }
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.priority-high { background: #fae7e7; }
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.validation-error,
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.error {
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color: #a32020;
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}
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.validation-error {
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grid-column: 1 / -1;
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margin: 0;
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}
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.message,
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.empty-message {
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margin-top: 24px;
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padding: 14px;
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background: #f4f6fa;
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border-radius: 8px;
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}
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@media (max-width: 700px) {
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.todo-form {
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grid-template-columns: 1fr;
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}
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.todo-item {
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grid-template-columns: 1fr;
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}
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.statistics {
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flex-direction: column;
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gap: 6px;
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}
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}
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import { useEffect, useState } from "react";
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import TodoForm from "./components/TodoForm";
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import TodoList from "./components/TodoList";
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import "./App.css";
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function App() {
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const [todos, setTodos] = useState([]);
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function addTodo(text, priority) {
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const newTodo = {
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id: crypto.randomUUID(),
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text,
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priority,
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completed: false,
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};
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setTodos((currentTodos) => [newTodo, ...currentTodos]);
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}
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function toggleTodo(id) {
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setTodos((currentTodos) =>
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currentTodos.map((todo) =>
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todo.id === id ? { ...todo, completed: !todo.completed } : todo
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)
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);
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}
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function deleteTodo(id) {
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setTodos((currentTodos) =>
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currentTodos.filter((todo) => todo.id !== id)
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);
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}
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return (
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<main className="app">
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<section className="todo-card">
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<header>
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<p className="eyebrow">React-Schulungsprojekt</p>
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<h1>Meine To-do-Liste</h1>
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<p>
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Aufgaben mit Komponenten, Props, State und API verwalten.
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</p>
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</header>
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<TodoForm onAddTodo={addTodo} />
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<TodoList
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todos={todos}
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onToggleTodo={toggleTodo}
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onDeleteTodo={deleteTodo}
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/>
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</section>
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</main>
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);
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}
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export default App;
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<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>
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After Width: | Height: | Size: 8.5 KiB |
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import { useState } from "react";
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function TodoForm({ onAddTodo }) {
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const [input, setInput] = useState("");
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const [priority, setPriority] = useState("normal");
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const [validationError, setValidationError] = useState("");
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function handleSubmit(event) {
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event.preventDefault();
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const cleanedInput = input.trim();
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if (cleanedInput === "") {
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setValidationError("Bitte geben Sie eine Aufgabe ein.");
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return;
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}
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onAddTodo(cleanedInput, priority);
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setInput("");
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setPriority("normal");
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setValidationError("");
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}
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return (
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<form className="todo-form" onSubmit={handleSubmit}>
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<div className="form-field">
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<label htmlFor="todo-input">Neue Aufgabe</label>
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<input
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id="todo-input"
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type="text"
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value={input}
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onChange={(event) => setInput(event.target.value)}
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placeholder="Zum Beispiel: React-Komponenten wiederholen"
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/>
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</div>
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<div className="form-field">
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<label htmlFor="priority">Priorität</label>
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<select
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id="priority"
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value={priority}
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onChange={(event) => setPriority(event.target.value)}
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>
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<option value="low">Niedrig</option>
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<option value="normal">Normal</option>
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<option value="high">Hoch</option>
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</select>
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</div>
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<button className="primary-button" type="submit">
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Aufgabe hinzufügen
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</button>
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{validationError && (
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<p className="validation-error" role="alert">
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{validationError}
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</p>
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)}
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</form>
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);
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}
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export default TodoForm;
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@@ -0,0 +1,31 @@
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function TodoItem({ todo, onToggleTodo, onDeleteTodo }) {
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const priorityLabels = {
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low: "Niedrig",
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normal: "Normal",
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high: "Hoch",
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};
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return (
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<li className={`todo-item ${todo.completed ? "completed" : ""}`}>
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<label className="todo-content">
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<input
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type="checkbox"
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checked={todo.completed}
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onChange={() => onToggleTodo(todo.id)}
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/>
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<span className="todo-text">{todo.text}</span>
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</label>
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<span className={`priority priority-${todo.priority}`}>
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{priorityLabels[todo.priority]}
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</span>
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<button
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className="delete-button"
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type="button"
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onClick={() => onDeleteTodo(todo.id)}
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aria-label={`Aufgabe ${todo.text} löschen`}
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>
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Löschen
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</button>
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</li>
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);
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}
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export default TodoItem;
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@@ -0,0 +1,23 @@
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import TodoItem from "./TodoItem";
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function TodoList({ todos, onToggleTodo, onDeleteTodo }) {
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if (todos.length === 0) {
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return (
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<p className="empty-message">
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Es sind noch keine Aufgaben vorhanden.
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</p>
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);
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}
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return (
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<ul className="todo-list">
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{todos.map((todo) => (
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<TodoItem
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key={todo.id}
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todo={todo}
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onToggleTodo={onToggleTodo}
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onDeleteTodo={onDeleteTodo}
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/>
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))}
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</ul>
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);
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}
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export default TodoList;
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import { StrictMode } from 'react'
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import { createRoot } from 'react-dom/client'
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import App from './App.jsx'
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createRoot(document.getElementById('root')).render(
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<StrictMode>
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<App />
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</StrictMode>,
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)
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Reference in New Issue
Block a user