最近有空重新看了一下vuex,然后又写了一个todolist小demo,原理比较简单,主要是自己规范了一下代码的写法.
下载地址 :vue-test_jb51.rar
效果图
根组件
<template> <div> <h1>todo list demo</h1> <type-filter :types='types' :filter='filter' :handleUpdateFilter='handleUpdateFilter' /> <add-todo :handleAdd='handleAdd' /> <todo-item v-for='(item,index) in list' :key='item.id' :index='index' :data='item' :filter='filter' :handleRemove='handleRemove' :handleToggle='handleToggle' /> </div> </template> <script> import { createNamespacedHelpers } from 'vuex' import TypeFilter from './filter' import AddTodo from './addTodo' import TodoItem from './item' const { mapState, mapMutations } = createNamespacedHelpers('TodoList') export default { name: 'todo-list-demo', components: { TypeFilter, TodoItem, AddTodo }, computed: { ...mapState(['list', 'types', 'filter']) }, methods: { ...mapMutations([ 'handleAdd', 'handleRemove', 'handleToggle', 'handleUpdateFilter' ]) } } </script> <style lang='scss' scoped> @import './style.scss'; </style>
过滤条件组件
<template> <ul> <li v-for='(item,index) in types' :key='index + item' :class='filterClass(item)' @click='handleUpdateFilter(item)' >{{item}}</li> </ul> </template> <script> export default { name: 'type-filter', props: ['types', 'filter', 'handleUpdateFilter'], methods: { filterClass(filter) { return { filter: true, active: filter === this.filter } } } } </script> <style lang='scss' scoped> @import './style.scss'; </style>
添加待办组件
<template> <input type='text' @keyup.enter='add' placeholder='input then hit enter' /> </template> <script> export default { name: 'add-todo', props: ['handleAdd'], methods: { add(e) { const val = e.target.value.trim() if (val) { this.handleAdd({ id: new Date().getTime(), message: val, status: false }) e.target.value = '' } } } } </script> <style lang='scss' scoped> @import './style.scss'; </style>
单个待办事项组件
<template> <p v-if='show'> <span :class='messageClass(data.status)' @click='handleToggle(data.id)' >{{index+1}}. {{data.message}}<i>{{dateFormat(data.id)}}</i></span> <span @click='handleRemove(data.id)' >Delete</span> </p> </template> <script> export default { name: 'todo-items', props: ['data', 'filter', 'index', 'handleRemove', 'handleToggle'], computed: { show() { return ( this.filter === 'ALL' || (this.filter === 'UNDO' && !this.data.status) || (this.filter === 'DONE' && this.data.status) ) } }, methods: { dateFormat(time) { const date = new Date(time) return `(${date.getFullYear()}-${date.getMonth() + 1}-${date.getDate()})` }, messageClass: status => ({ message: true, done: status }) } } </script> <style lang='scss' scoped> @import './style.scss'; </style>
vuex部分(模块)
const state = { list: [], types: ['ALL', 'UNDO', 'DONE'], filter: 'ALL' } const mutations = { handleAdd(state, item) { state.list = [...state.list, item] }, handleRemove(state, id) { state.list = state.list.filter(obj => obj.id !== id) }, handleToggle(state, id) { state.list = state.list.map( obj => (obj.id === id ? { ...obj, status: !obj.status } : obj) ) }, handleUpdateFilter(state, filter) { state.filter = filter } } export default { namespaced: true, state, mutations }