React-App für Todoliste aus Beispiel aus der Ellmann-Vorlesung und der ursprünglichen Todo-App zusammengebastelt

This commit is contained in:
2026-07-14 14:26:09 +02:00
parent d18af0ddf1
commit 9680fd3d39
6 changed files with 130 additions and 242 deletions
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<link rel="icon" type="image/svg+xml" href="/favicon.svg" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<head>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<title>react-todolist</title>
</head>
<body>
<div id="root"></div>
<script type="module" src="/src/main.jsx"></script>
</body>
</head>
<body>
<div id="root"></div>
<script type="module" src="/src/main.jsx"></script>
</body>
</html>
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import { useState } from 'react'
import reactLogo from './assets/react.svg'
import viteLogo from './assets/vite.svg'
import heroImg from './assets/hero.png'
import './App.css'
import {useState} from "react";
function App() {
const [count, setCount] = useState(0)
export default function App() {
const [input, setInput] = useState("");
const [todos, setTodos] = useState([]);
return (
<>
<section id="center">
<div className="hero">
<img src={heroImg} className="base" width="170" height="179" alt="" />
<img src={reactLogo} className="framework" alt="React logo" />
<img src={viteLogo} className="vite" alt="Vite logo" />
function addTodo() {
if (input.trim() === "") return;
setTodos([...todos, {id: Date.now(), text: input, erledigt: false}]);
setInput("");
}
function deleteTodo(id) {
setTodos(todos.filter((todo) => todo.id !== id));
}
function toggleTodo(id) {
setTodos(todos.map((todo) =>
todo.id === id ? {...todo, erledigt: !todo.erledigt} : todo
));
}
return (
<div className="container schatten-farbverlauf">
<div className="aufgaben-app">
<h2>Aufgabenliste</h2>
<div className="input-container">
<input type="text" onChange={(e) => setInput(e.target.value)} placeholder="Neue Aufgabe eintragen..."/>
<button onClick={() => addTodo()}>Hinzufügen</button>
</div>
<ul id="todo-list-container">
{todos.map((todo) => (
<li>
<span onClick={() => toggleTodo(todo.id)}>
{todo.text}: {todo.erledigt ? "bereits " : "noch nicht "} erledigt
</span>
<button onClick={() => deleteTodo(todo.id)}>Entfernen</button>
</li>))}
</ul>
</div>
</div>
<div>
<h1>Get started</h1>
<p>
Edit <code>src/App.jsx</code> and save to test <code>HMR</code>
</p>
</div>
<button
type="button"
className="counter"
onClick={() => setCount((count) => count + 1)}
>
Count is {count}
</button>
</section>
<div className="ticks"></div>
<section id="next-steps">
<div id="docs">
<svg className="icon" role="presentation" aria-hidden="true">
<use href="/icons.svg#documentation-icon"></use>
</svg>
<h2>Documentation</h2>
<p>Your questions, answered</p>
<ul>
<li>
<a href="https://vite.dev/" target="_blank">
<img className="logo" src={viteLogo} alt="" />
Explore Vite
</a>
</li>
<li>
<a href="https://react.dev/" target="_blank">
<img className="button-icon" src={reactLogo} alt="" />
Learn more
</a>
</li>
</ul>
</div>
<div id="social">
<svg className="icon" role="presentation" aria-hidden="true">
<use href="/icons.svg#social-icon"></use>
</svg>
<h2>Connect with us</h2>
<p>Join the Vite community</p>
<ul>
<li>
<a href="https://github.com/vitejs/vite" target="_blank">
<svg
className="button-icon"
role="presentation"
aria-hidden="true"
>
<use href="/icons.svg#github-icon"></use>
</svg>
GitHub
</a>
</li>
<li>
<a href="https://chat.vite.dev/" target="_blank">
<svg
className="button-icon"
role="presentation"
aria-hidden="true"
>
<use href="/icons.svg#discord-icon"></use>
</svg>
Discord
</a>
</li>
<li>
<a href="https://x.com/vite_js" target="_blank">
<svg
className="button-icon"
role="presentation"
aria-hidden="true"
>
<use href="/icons.svg#x-icon"></use>
</svg>
X.com
</a>
</li>
<li>
<a href="https://bsky.app/profile/vite.dev" target="_blank">
<svg
className="button-icon"
role="presentation"
aria-hidden="true"
>
<use href="/icons.svg#bluesky-icon"></use>
</svg>
Bluesky
</a>
</li>
</ul>
</div>
</section>
<div className="ticks"></div>
<section id="spacer"></section>
</>
)
}
export default App
);
}
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:root {
--text: #6b6375;
--text-h: #08060d;
--bg: #fff;
--border: #e5e4e7;
--code-bg: #f4f3ec;
--accent: #aa3bff;
--accent-bg: rgba(170, 59, 255, 0.1);
--accent-border: rgba(170, 59, 255, 0.5);
--social-bg: rgba(244, 243, 236, 0.5);
--shadow:
rgba(0, 0, 0, 0.1) 0 10px 15px -3px, rgba(0, 0, 0, 0.05) 0 4px 6px -2px;
--sans: system-ui, 'Segoe UI', Roboto, sans-serif;
--heading: system-ui, 'Segoe UI', Roboto, sans-serif;
--mono: ui-monospace, Consolas, monospace;
font: 18px/145% var(--sans);
letter-spacing: 0.18px;
color-scheme: light dark;
color: var(--text);
background: var(--bg);
font-synthesis: none;
text-rendering: optimizeLegibility;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
@media (max-width: 1024px) {
font-size: 16px;
}
}
@media (prefers-color-scheme: dark) {
:root {
--text: #9ca3af;
--text-h: #f3f4f6;
--bg: #16171d;
--border: #2e303a;
--code-bg: #1f2028;
--accent: #c084fc;
--accent-bg: rgba(192, 132, 252, 0.15);
--accent-border: rgba(192, 132, 252, 0.5);
--social-bg: rgba(47, 48, 58, 0.5);
--shadow:
rgba(0, 0, 0, 0.4) 0 10px 15px -3px, rgba(0, 0, 0, 0.25) 0 4px 6px -2px;
}
#social .button-icon {
filter: invert(1) brightness(2);
}
}
body {
margin: 0;
}
#root {
width: 1126px;
max-width: 100%;
margin: 0 auto;
text-align: center;
border-inline: 1px solid var(--border);
min-height: 100svh;
display: flex;
flex-direction: column;
box-sizing: border-box;
}
h1,
h2 {
font-family: var(--heading);
font-weight: 500;
color: var(--text-h);
}
h1 {
font-size: 56px;
letter-spacing: -1.68px;
margin: 32px 0;
@media (max-width: 1024px) {
font-size: 36px;
margin: 20px 0;
}
}
h2 {
font-size: 24px;
line-height: 118%;
letter-spacing: -0.24px;
margin: 0 0 8px;
@media (max-width: 1024px) {
font-size: 20px;
}
}
p {
margin: 0;
}
code,
.counter {
font-family: var(--mono);
display: inline-flex;
border-radius: 4px;
color: var(--text-h);
}
code {
font-size: 15px;
line-height: 135%;
padding: 4px 8px;
background: var(--code-bg);
}
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import { StrictMode } from 'react'
import { createRoot } from 'react-dom/client'
import './index.css'
import './style.css'
import App from './App.jsx'
createRoot(document.getElementById('root')).render(
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@font-face {
font-family: 'Fira-Sans';
src: url("./media/fonts/FiraSans-Regular.ttf") format("truetype");
}
html {
font-size: 20px;
box-sizing: border-box;
}
* {
font-family: 'Fira-Sans', sans-serif;
}
.container {
margin: auto;
border-radius: 1em;
corner-shape: squircle bevel;
width: clamp(400px, 60vw, 800px);
}
.aufgaben-app {
margin: 10px;
padding: 10px;
border-radius: 1em;
corner-shape: squircle bevel;
background-color: ivory;
}
.aufgaben-app h2 {
font-size: 2rem;
}
.aufgaben-app h2 img {
max-height: 1em;
}
.input-container {
display: flex;
flex-wrap: nowrap;
gap: 1em;
}
.input-container #input-box {
flex-grow: 1;
}
.input-container button {
cursor: pointer;
background-color: lightskyblue;
border-radius: 100%;
corner-shape: squircle;
}
.schatten-farbverlauf {
background: linear-gradient(45deg, red, orange, yellow, green, blue, violet, pink);
padding: 3px;
}
.checked-list-item
{
text-decoration: line-through;
color: lightslategrey;
}
ul {
list-style: none;
}
li {
display: flex;
gap: .7em;
}
label {
flex-grow: 1;
}