ec708ba943
Complete companion repo for "Your First Hour with Claude Code" article. Includes step-by-step prompts, example output, troubleshooting, and cost guide. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
248 lines
6.5 KiB
HTML
248 lines
6.5 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Todo App</title>
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
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background: #1a1a2e;
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color: #e0e0e0;
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min-height: 100vh;
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display: flex;
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justify-content: center;
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padding: 2rem 1rem;
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}
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.container {
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width: 100%;
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max-width: 540px;
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}
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h1 {
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font-size: 1.75rem;
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font-weight: 600;
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margin-bottom: 1.5rem;
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color: #ffffff;
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}
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.input-row {
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display: flex;
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gap: 0.5rem;
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margin-bottom: 1.5rem;
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}
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.input-row input {
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flex: 1;
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padding: 0.75rem 1rem;
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background: #16213e;
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border: 1px solid #2a2a4a;
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border-radius: 8px;
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color: #e0e0e0;
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font-size: 1rem;
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outline: none;
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transition: border-color 0.2s;
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}
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.input-row input:focus {
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border-color: #4DB8A4;
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}
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.input-row input::placeholder {
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color: #666;
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}
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.input-row button {
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padding: 0.75rem 1.25rem;
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background: #4DB8A4;
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color: #1a1a2e;
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border: none;
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border-radius: 8px;
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font-size: 1rem;
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font-weight: 600;
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cursor: pointer;
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transition: background 0.2s;
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}
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.input-row button:hover {
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background: #3da897;
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}
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.task-list {
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list-style: none;
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}
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.task-item {
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display: flex;
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align-items: center;
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gap: 0.75rem;
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padding: 0.875rem 1rem;
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background: #16213e;
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border-radius: 8px;
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margin-bottom: 0.5rem;
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transition: opacity 0.3s, transform 0.3s;
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animation: slideIn 0.3s ease;
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}
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@keyframes slideIn {
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from {
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opacity: 0;
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transform: translateY(-10px);
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}
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to {
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opacity: 1;
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transform: translateY(0);
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}
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}
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.task-item.completed .task-text {
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text-decoration: line-through;
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color: #555;
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}
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.task-checkbox {
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width: 20px;
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height: 20px;
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border: 2px solid #4DB8A4;
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border-radius: 50%;
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cursor: pointer;
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display: flex;
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align-items: center;
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justify-content: center;
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flex-shrink: 0;
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transition: background 0.2s;
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}
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.task-item.completed .task-checkbox {
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background: #4DB8A4;
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}
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.task-item.completed .task-checkbox::after {
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content: '\2713';
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color: #1a1a2e;
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font-size: 0.75rem;
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font-weight: bold;
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}
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.task-text {
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flex: 1;
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font-size: 0.95rem;
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line-height: 1.4;
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transition: color 0.2s;
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}
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.delete-btn {
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background: none;
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border: none;
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color: #555;
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cursor: pointer;
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font-size: 1.25rem;
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padding: 0.25rem;
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line-height: 1;
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transition: color 0.2s;
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flex-shrink: 0;
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}
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.delete-btn:hover {
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color: #e74c3c;
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}
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.empty-state {
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text-align: center;
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color: #555;
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padding: 2rem;
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font-size: 0.95rem;
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}
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.task-count {
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text-align: center;
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color: #555;
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font-size: 0.8rem;
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margin-top: 1rem;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<h1>Todo</h1>
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<div class="input-row">
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<input type="text" id="taskInput" placeholder="What needs to be done?" autofocus>
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<button onclick="addTask()">Add</button>
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</div>
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<ul class="task-list" id="taskList"></ul>
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<div class="task-count" id="taskCount"></div>
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</div>
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<script>
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let tasks = JSON.parse(localStorage.getItem('todos') || '[]');
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function saveTasks() {
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localStorage.setItem('todos', JSON.stringify(tasks));
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}
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function renderTasks() {
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const list = document.getElementById('taskList');
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const countEl = document.getElementById('taskCount');
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if (tasks.length === 0) {
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list.innerHTML = '<li class="empty-state">No tasks yet. Add one above.</li>';
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countEl.textContent = '';
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return;
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}
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list.innerHTML = tasks.map((task, i) => `
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<li class="task-item ${task.completed ? 'completed' : ''}">
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<div class="task-checkbox" onclick="toggleTask(${i})"></div>
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<span class="task-text">${escapeHtml(task.text)}</span>
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<button class="delete-btn" onclick="deleteTask(${i})" title="Delete">×</button>
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</li>
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`).join('');
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const active = tasks.filter(t => !t.completed).length;
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countEl.textContent = `${active} task${active !== 1 ? 's' : ''} remaining`;
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}
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function addTask() {
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const input = document.getElementById('taskInput');
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const text = input.value.trim();
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if (!text) return;
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tasks.unshift({ text, completed: false, id: Date.now() });
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input.value = '';
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saveTasks();
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renderTasks();
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}
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function toggleTask(index) {
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tasks[index].completed = !tasks[index].completed;
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saveTasks();
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renderTasks();
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}
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function deleteTask(index) {
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tasks.splice(index, 1);
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saveTasks();
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renderTasks();
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}
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function escapeHtml(text) {
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const div = document.createElement('div');
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div.textContent = text;
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return div.innerHTML;
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}
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document.getElementById('taskInput').addEventListener('keypress', (e) => {
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if (e.key === 'Enter') addTask();
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});
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renderTasks();
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</script>
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</body>
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</html>
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