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vue + vuex todolist的实现示例代码

2018年03月17日  | 移动技术网IT编程  | 我要评论

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todolist demo

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 :

效果图

根组件

<template>
 <div class='container'>
 <h1 class='title'>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 class='types'>
 <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'
 name='add-todo'
 id='add-todo-input'
 class='add-todo'
 @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' class='todo-item'>
 <span
 :class='messageclass(data.status)'
 @click='handletoggle(data.id)'
 >{{index+1}}. {{data.message}}<i class='date'>{{dateformat(data.id)}}</i></span>
 <span
 class='delete'
 @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
}

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