一个vue3的待办列表组件, 仿企业微信的待办列表
TodoList.vue

<template><div><el-input v-model="todoInput" placeholder="写下你的待办事项..." class="el-input" @keyup.enter="addTodo"input-style="background-color: #EBECED;" /><el-table :data="todos" size="small" :show-header="false" @row-dblclick="editTodo"><el-table-column width="30"><template #default="scope"><el-checkbox v-model="scope.row.completed" @change="toggleTodo(scope.row)">check</el-checkbox></template></el-table-column><el-table-column prop="text" /></el-table><div @click="showCompleted = !showCompleted" style="cursor: pointer; text-align: center; margin: 10px 0;"><el-divider v-if="!showCompleted">已完成 (点击展开)</el-divider><el-divider v-else>已完成 (点击折叠)</el-divider></div><el-table :data="completedTodos" size="small" :show-header="false" v-if="showCompleted"><el-table-column width="30"><template #default="scope"><el-checkbox v-model="scope.row.completed" @change="toggleTodo(scope.row)">check</el-checkbox></template></el-table-column><el-table-column prop="text" /></el-table><el-dialog title="修改" v-model="editDialogVisible"><el-form :model="editingTodo"><el-form-item label="内容"><el-input ref="inputRef" v-model="editingTodo.text"></el-input></el-form-item><el-form-item label="状态"><el-checkbox v-model="editingTodo.completed">已完成</el-checkbox></el-form-item></el-form><template #footer><el-button @click="editDialogVisible = false">取 消</el-button><el-button type="primary" @click="confirmEdit()">确 定</el-button></template></el-dialog></div>
</template><script setup lang="ts">
// 通用的待办列表
// 使用<TodoList :todoList="todoList" :save="save"></TodoList>
import { ref } from 'vue';interface Todo {id: number;text: string;completed: boolean;
}defineOptions({name: 'TodoList'
})const props = defineProps({todoList: Array<Todo>,save: Function  //外部传入的保存方法,入参是Todo[]
});const todoInput = ref('');
const todos = ref<Todo[]>([]);
const completedTodos = ref<Todo[]>([]);
const editDialogVisible = ref(false);
const editingTodo = ref({} as Todo);
const showCompleted = ref(false);
const inputRef = ref();watch(() => props.todoList, (newValue) => {if (newValue) {newValue.sort((a, b) => b.id - a.id);todos.value = newValue.filter(t => !t.completed);completedTodos.value = newValue.filter(t => t.completed);}
})const addTodo = () => {if (todoInput.value.trim() === '') return;todos.value.unshift({id: Date.now(),text: todoInput.value,completed: false});todoInput.value = '';saveTodoList();
};const toggleTodo = async (todo: Todo) => {await new Promise(resolve => setTimeout(() => resolve("delay"), 300)); //产生一个点击后动画效果if (todo.completed) {if (!completedTodos.value.find(t => t.id == todo.id)) {completedTodos.value.unshift(todo);}todos.value = todos.value.filter(t => t.id !== todo.id);} else {if (!todos.value.find(t => t.id == todo.id)) {todo.id = Date.now();//更新时间到最新,所以每个todo其实是没有唯一值的todos.value.unshift(todo);}completedTodos.value = completedTodos.value.filter(t => t.id !== todo.id);}saveTodoList();
};const editTodo = (todo: Todo) => {editingTodo.value = { ...todo };editDialogVisible.value = true;//组件focus的正确方式 setTimeoutsetTimeout(() => {inputRef.value?.focus();})
};const confirmEdit = () => {editDialogVisible.value = false;var todo = todos.value.find(t => t.id == editingTodo.value.id)if (todo) {todo.text = editingTodo.value.texttodo.completed = editingTodo.value.completed;toggleTodo(todo);}
};const saveTodoList = () => {if (props.save) { // 添加空值检查props.save(todos.value.concat(completedTodos.value));}
}</script>
<style scoped>
.el-input {--el-input-bg-color: #EBECED;
}
</style>