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@@ -0,0 +1,241 @@
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+<script src="../../dist/vue.min.js"></script>
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+<link
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+ rel="stylesheet"
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+ href="../../node_modules/todomvc-app-css/index.css"
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+/>
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+
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+<div id="app">
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+ <section class="todoapp">
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+ <header class="header">
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+ <h1>todos</h1>
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+ <input
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+ class="new-todo"
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+ autofocus
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+ autocomplete="off"
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+ placeholder="What needs to be done?"
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+ v-model="state.newTodo"
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+ @keyup.enter="addTodo"
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+ />
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+ </header>
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+ <section class="main" v-show="state.todos.length">
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+ <input
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+ id="toggle-all"
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+ class="toggle-all"
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+ type="checkbox"
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+ v-model="state.allDone"
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+ />
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+ <label for="toggle-all">Mark all as complete</label>
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+ <ul class="todo-list">
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+ <li
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+ v-for="todo in state.filteredTodos"
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+ class="todo"
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+ :key="todo.id"
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+ :class="{ completed: todo.completed, editing: todo === state.editedTodo }"
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+ >
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+ <div class="view">
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+ <input class="toggle" type="checkbox" v-model="todo.completed" />
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+ <label @dblclick="editTodo(todo)">{{ todo.title }}</label>
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+ <button class="destroy" @click="removeTodo(todo)"></button>
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+ </div>
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+ <input
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+ class="edit"
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+ type="text"
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+ v-model="todo.title"
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+ v-todo-focus="todo === state.editedTodo"
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+ @blur="doneEdit(todo)"
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+ @keyup.enter="doneEdit(todo)"
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+ @keyup.escape="cancelEdit(todo)"
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+ />
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+ </li>
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+ </ul>
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+ </section>
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+ <footer class="footer" v-show="state.todos.length">
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+ <span class="todo-count">
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+ <strong>{{ state.remaining }}</strong>
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+ <span>{{ state.remainingText }}</span>
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+ </span>
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+ <ul class="filters">
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+ <li>
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+ <a href="#/all" :class="{ selected: state.visibility === 'all' }"
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+ >All</a
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+ >
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+ </li>
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+ <li>
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+ <a
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+ href="#/active"
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+ :class="{ selected: state.visibility === 'active' }"
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+ >Active</a
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+ >
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+ </li>
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+ <li>
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+ <a
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+ href="#/completed"
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+ :class="{ selected: state.visibility === 'completed' }"
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+ >Completed</a
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+ >
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+ </li>
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+ </ul>
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+
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+ <button
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+ class="clear-completed"
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+ @click="removeCompleted"
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+ v-show="state.todos.length > state.remaining"
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+ >
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+ Clear completed
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+ </button>
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+ </footer>
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+ </section>
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+</div>
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+
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+<script>
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+ const { reactive, computed, watchEffect, onMounted, onUnmounted } = Vue
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+
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+ const STORAGE_KEY = 'todos-vuejs-3.x'
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+ const todoStorage = {
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+ fetch() {
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+ const todos = JSON.parse(localStorage.getItem(STORAGE_KEY) || '[]')
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+ todos.forEach((todo, index) => {
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+ todo.id = index
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+ })
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+ todoStorage.uid = todos.length
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+ return todos
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+ },
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+ save(todos) {
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+ localStorage.setItem(STORAGE_KEY, JSON.stringify(todos))
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+ }
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+ }
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+
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+ const filters = {
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+ all(todos) {
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+ return todos
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+ },
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+ active(todos) {
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+ return todos.filter(todo => {
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+ return !todo.completed
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+ })
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+ },
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+ completed(todos) {
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+ return todos.filter(function (todo) {
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+ return todo.completed
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+ })
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+ }
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+ }
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+
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+ function pluralize(n) {
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+ return n === 1 ? 'item' : 'items'
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+ }
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+
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+ new Vue({
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+ setup() {
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+ const state = reactive({
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+ todos: todoStorage.fetch(),
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+ editedTodo: null,
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+ newTodo: '',
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+ beforeEditCache: '',
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+ visibility: 'all',
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+ remaining: computed(() => {
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+ return filters.active(state.todos).length
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+ }),
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+ remainingText: computed(() => {
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+ return ` ${pluralize(state.remaining)} left`
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+ }),
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+ filteredTodos: computed(() => {
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+ return filters[state.visibility](state.todos)
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+ }),
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+ allDone: computed({
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+ get: function () {
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+ return state.remaining === 0
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+ },
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+ set: function (value) {
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+ state.todos.forEach(todo => {
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+ todo.completed = value
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+ })
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+ }
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+ })
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+ })
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+
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+ watchEffect(() => {
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+ todoStorage.save(state.todos)
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+ })
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+
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+ onMounted(() => {
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+ window.addEventListener('hashchange', onHashChange)
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+ onHashChange()
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+ })
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+
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+ onUnmounted(() => {
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+ window.removeEventListener('hashchange', onHashChange)
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+ })
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+
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+ function onHashChange() {
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+ const visibility = window.location.hash.replace(/#\/?/, '')
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+ if (filters[visibility]) {
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+ state.visibility = visibility
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+ } else {
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+ window.location.hash = ''
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+ state.visibility = 'all'
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+ }
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+ }
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+
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+ function addTodo() {
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+ const value = state.newTodo && state.newTodo.trim()
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+ if (!value) {
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+ return
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+ }
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+ state.todos.push({
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+ id: todoStorage.uid++,
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+ title: value,
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+ completed: false
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+ })
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+ state.newTodo = ''
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+ }
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+
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+ function removeTodo(todo) {
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+ state.todos.splice(state.todos.indexOf(todo), 1)
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+ }
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+
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+ function editTodo(todo) {
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+ state.beforeEditCache = todo.title
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+ state.editedTodo = todo
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+ }
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+
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+ function doneEdit(todo) {
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+ if (!state.editedTodo) {
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+ return
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+ }
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+ state.editedTodo = null
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+ todo.title = todo.title.trim()
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+ if (!todo.title) {
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+ removeTodo(todo)
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+ }
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+ }
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+
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+ function cancelEdit(todo) {
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+ state.editedTodo = null
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+ todo.title = state.beforeEditCache
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+ }
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+
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+ function removeCompleted() {
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+ state.todos = filters.active(state.todos)
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+ }
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+
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+ return {
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+ state,
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+ addTodo,
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+ removeTodo,
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+ editTodo,
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+ doneEdit,
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+ cancelEdit,
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+ removeCompleted
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+ }
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+ },
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+
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+ directives: {
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+ 'todo-focus': (el, { value }) => {
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+ if (value) {
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+ el.focus()
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+ }
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+ }
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+ }
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+ }).$mount('#app')
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+</script>
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