Vue學習有一段時間了,就想着用Vue來寫個項目練練手,弄了半個月,到今天爲止也算勉強能看了。
因爲不知道怎麼拿手機App的接口,而且KFC電腦端官網真的...一言難盡,因此項目全部數據都是我截圖而後寫在EasyMock裏的,有須要的同窗能夠自取javascript
vue
+ webpack
+ vuex
+ axios
html
│ App.vue
│ main.js
│
├─assets
│ logo.png
│
├─components
│ │ cartcontrol.vue
│ │ code.vue
│ │ coupon.vue
│ │ mineHeader.vue
│ │ scroll.vue
│ │ shopHeader.vue
│ │ sidebar.vue
│ │ submitBar.vue
│ │ takeout.vue
│ │ wallet.vue
│ │
│ └─tabs
│ Other.vue
│ Outward.vue
│ Selfhelp.vue
│ Vgold.vue
│
├─pages
│ ├─home
│ │ home.vue
│ │
│ ├─mine
│ │ mine.vue
│ │
│ ├─order
│ │ order.vue
│ │
│ └─shop
│ shop.vue
│
├─router
│ index.js
│
└─vuex
│ store.js
│ types.js
│
└─modules
com.js
cou.js
take.js
複製代碼
由於每一個頁面都須要滑動,因此一開始就把scroll組件封裝好,以後使用的話引入一下就好了vue
<template>
<div ref="wrapper">
<slot></slot>
</div>
</template>
<script>
import BScroll from 'better-scroll';
const DIRECTION_H = 'horizontal';
const DIRECTION_V = 'vertical';
export default {
name: 'scroll',
props: {
/**
* 1 滾動的時候會派發scroll事件,會節流。
* 2 滾動的時候實時派發scroll事件,不會節流。
* 3 除了實時派發scroll事件,在swipe的狀況下仍然能實時派發scroll事件
*/
probeType: {
type: Number,
default: 1
},
/**
* 點擊列表是否派發click事件
*/
click: {
type: Boolean,
default: true
},
/**
* 是否開啓橫向滾動
*/
scrollX: {
type: Boolean,
default: false
},
/**
* 是否派發滾動事件
*/
listenScroll: {
type: Boolean,
default: false
},
/**
* 列表的數據
*/
data: {
type: Array,
default: null
},
pullup: {
type: Boolean,
default: false
},
pulldown: {
type: Boolean,
default: false
},
beforeScroll: {
type: Boolean,
default: false
},
/**
* 當數據更新後,刷新scroll的延時。
*/
refreshDelay: {
type: Number,
default: 20
},
direction: {
type: String,
default: DIRECTION_V
}
},
methods: {
_initScroll() {
if(!this.$refs.wrapper) {
return
}
this.scroll = new BScroll(this.$refs.wrapper, {
probeType: this.probeType,
click: this.click,
eventPassthrough: this.direction === DIRECTION_V ? DIRECTION_H : DIRECTION_V
})
// 是否派發滾動事件
if (this.listenScroll) {
this.scroll.on('scroll', (pos) => {
this.$emit('scroll', pos)
})
}
// 是否派發滾動到底部事件,用於上拉加載
if (this.pullup) {
this.scroll.on('scrollEnd', () => {
if (this.scroll.y <= (this.scroll.maxScrollY + 50)) {
this.$emit('scrollToEnd')
}
})
}
// 是否派發頂部下拉事件,用於下拉刷新
if (this.pulldown) {
this.scroll.on('touchend', (pos) => {
// 下拉動做
if (pos.y > 50) {
this.$emit('pulldown')
}
})
}
// 是否派發列表滾動開始的事件
if (this.beforeScroll) {
this.scroll.on('beforeScrollStart', () => {
this.$emit('beforeScroll')
})
}
},
disable() {
// 代理better-scroll的disable方法
this.scroll && this.scroll.disable()
},
enable() {
// 代理better-scroll的enable方法
this.scroll && this.scroll.enable()
},
refresh() {
// 代理better-scroll的refresh方法
this.scroll && this.scroll.refresh()
},
scrollTo() {
// 代理better-scroll的scrollTo方法
this.scroll && this.scroll.scrollTo.apply(this.scroll, arguments)
},
scrollToElement() {
// 代理better-scroll的scrollToElement方法
this.scroll && this.scroll.scrollToElement.apply(this.scroll, arguments)
},
},
mounted() {
setTimeout(() => {
this._initScroll()
},20)
},
watch: {
data () {
setTimeout(() => {
this.refresh()
},this.refreshDelay)
}
},
}
</script>
<style>
</style>
複製代碼
slot
插槽是一塊模板,顯示不顯示,以及怎樣顯示由父組件來決定, 也就是把你想要滑動的區域插進去,剩下的內容都是官方文檔定義好的,複製一遍就行了java
頭部相對頁面是固定的,這裏我把頭部都封裝成了組件,在主頁面引入頭部,要滑動的部分放入上面定義好的scroll組件便可webpack
<template>
<div class="sidebar">
<div class="sidebar-con" :class="{showbar: showSidebar}">
<div class="navbar_left" @click="backTo">
<img src="../pages/mine/zuo.png" alt="">
</div>
<van-tree-select :height="850" :items="items" :main-active-index="mainActiveIndex" :active-id="activeId" @navclick="onNavClick" @itemclick="onItemClick"/>
</div>
</div>
</template>
複製代碼
樣式用的是Vant UI組件,最外面綁定了一個動態樣式showbar,而後把總體的初始位置設在屏幕以外,當傳入參數爲true時再回來,用Vuex管理它的狀態ios
.sidebar-con {
position: absolute;
top: 0;
left: -400px;
transform: translateZ(0);
opacity: 0;
width: 100%;
z-index: 1002;
height: 100%;
overflow: auto;
transition: all 0.3s ease;
}
.showbar {
transform: translateX(400px);
opacity: 1;
}
複製代碼
const state = {
showSidebar: false
}
const mutations = {
[types.COM_SHOW_SIDE_BAR] (state, status) {
state.showSidebar = status
}
}
const actions = {
setShowSidebar ({commit}, status) {
commit(types.COM_SHOW_SIDE_BAR, status)
}
}
const getters = {
showSidebar: state => state.showSidebar
}
複製代碼
用mapGetter拿到對象,而後傳給computed屬性,對象能夠直接使用git
computed: {
...mapGetters([
'showSidebar'
])
},
複製代碼
當須要顯示的時候使用dispatch將參數傳入 this.$store.dispatch('setShowSidebar', true)
github
總體代碼web
<template>
<div class="sidebar">
<div class="sidebar-con" :class="{showbar: showSidebar}">
<div class="navbar_left" @click="backTo">
<img src="../pages/mine/zuo.png" alt="">
</div>
<van-tree-select :height="850" :items="items" :main-active-index="mainActiveIndex" :active-id="activeId" @navclick="onNavClick" @itemclick="onItemClick"/>
</div>
</div>
</template>
<script> import { TreeSelect } from 'vant'; import { mapGetters } from 'vuex'; export default { data() { return { }, ], // 左側高亮元素的index mainActiveIndex: 0, // 被選中元素的id activeId: 1 }; }, computed: { ...mapGetters([ 'showSidebar' ]) }, methods: { onNavClick(index) { this.mainActiveIndex = index; }, onItemClick(data) { this.activeId = data.id; this.$emit('active', data.text) this.$store.dispatch('setShowSidebar', false) }, backTo(){ this.$store.dispatch('setShowSidebar', false) }, } } </script>
<style scoped> .sidebar-con { position: absolute; top: 0; left: -400px; transform: translateZ(0); opacity: 0; width: 100%; z-index: 1002; height: 100%; overflow: auto; transition: all 0.3s ease; } .showbar { transform: translateX(400px); opacity: 1; } .navbar_left { background-color: #da3a35; } .navbar_left img { width: 25px; height: 25px; margin-left: 3vw; margin-top: 5px; } </style>
複製代碼
這裏參考的是慕課網黃軼大大的課程,課程地址
<template>
<div class="takeout" :class="{showtakeout: showTakeout}">
<div class="goods">
<div class="header">
<div class="navbar_left" @click="backTo">
<img src="../pages/shop/zuo.png" alt="">
</div>
<div class="appointment">
<div class="btn">
<div class="yy">預定</div>
<div class="Kcoffee">K咖啡</div>
</div>
<div class="bag">
<router-link style="color: #000" to="/coupon">
<div class="bagtext">
卡包<p>3</p>張
</div>
</router-link>
</div>
</div>
</div>
<div class="goodList">
<div class="menu-wrapper" ref="menuWrapper">
<ul>
<li v-for="(item,index) in goods" :key="index" class="menu-item" :class="{'current':currentIndex===index}" @click="selectMenu(index,$event)" >
<span class="text border-1px">
{{item.name}}
</span>
</li>
</ul>
</div>
<div class="foods-wrapper" ref="foodsWrapper">
<ul>
<li v-for="(item,index) in goods" :key="index" class="food-list" ref="foodList">
<h1 class="title">{{item.name}}</h1>
<ul>
<li v-for="(food,index) in item.foods" :key="index" class="food-item border-1px" @click="selectFood(index, $event)" >
<div class="icon">
<img :src="food.image">
</div>
<div class="content">
<h2 class="name">{{food.name}}</h2>
<div class="price">
<span class="now">¥{{food.price}}</span>
</div>
<div class="cartcontrol-wrapper">
<cartcontrol @add="addFood" :food="food"></cartcontrol>
</div>
</div>
</li>
</ul>
</li>
</ul>
</div>
</div>
<submit-bar ref="shopcart" :selectFoods="selectFoods"></submit-bar>
</div>
</div>
</template>
複製代碼
這裏經過currentIndex和index作對比,來確認是否添加current類,經過添加current類來實現當前頁面的區域的樣式變化,他們之間的對比關係也就是menu區域和foods區域的顯示區域的對比關係
須要注意的是vue傳遞原生事件使用$event
<script>
import BScroll from 'better-scroll'
import cartcontrol from './cartcontrol'
import submitBar from './submitBar'
import { mapGetters } from 'vuex'
export default {
name: 'takeout',
data() {
return {
goods: [],
listHeight: [],
scrollY: 0
}
},
components: {
cartcontrol,
submitBar
},
computed: {
...mapGetters([
'showTakeout'
]),
currentIndex () {
for(let i = 0; i < this.listHeight.length; i++) {
let height1 = this.listHeight[i - 1]
let height2 = this.listHeight[i]
if (!height2 || (this.scrollY >= height1 && this.scrollY < height2)) {
return i
}
}
return 0
},
selectFoods () {
let foods = []
this.goods.forEach(good => {
good.foods.forEach(food => {
if (food.count) {
foods.push(food)
}
})
})
return foods
}
},
methods: {
backTo () {
this.$store.dispatch('setShowTakeout', false)
},
selectMenu(index, event) {
if (!event._constructed) {
return;
}
let foodList = this.$refs.foodList;
let el = foodList[index];
this.foodsScroll.scrollToElement(el, 300);
},
selectFood(food, event) {
if (!event._constructed) {
return;
}
this.selectedFood = food;
},
_initScroll() {
this.meunScroll = new BScroll(this.$refs.menuWrapper, {
click: true
})
this.foodsScroll = new BScroll(this.$refs.foodsWrapper, {
click: true,
probeType: 3
})
this.foodsScroll.on('scroll', pos => {
this.scrollY = Math.abs(Math.round(pos.y))
})
},
_calculateHeight () {
let foodList = this.$refs.foodList
let height = 0
for (let i = 0; i < foodList.length; i++) {
let item = foodList[i]
height += item.clientHeight
this.listHeight.push(height)
}
},
},
created () {
this.$http.get('https://www.easy-mock.com/mock/5ca49494ea0dc52bf3b67f4e/example/takeout')
.then(res => {
if (res.data.errno === 0) {
this.goods = res.data.data
this.$nextTick(() => {
this._initScroll()
this._calculateHeight()
})
}
})
}
}
</script>
複製代碼
<template>
<div class="submitBar">
<van-submit-bar :loading="setloading" :price="totalPrice" button-text="提交訂單" @submit="onSubmit" >
<div class="shoppingCart" @click="toggleList">
<img src="../../images/gwc.png" alt="">
<span v-if="selectFoods.length > 0">{{selectFoods.length}}</span>
</div>
</van-submit-bar>
<transition name="fold">
<div class="shopcart-list" v-show="listShow">
<div class="list-header">
<h1 class="title">購物車</h1>
<span class="empty" @click="empty">清空</span>
</div>
<div class="list-content" ref="listContent">
<ul>
<li class="food" v-for="(food, index) in selectFoods" :key="index">
<span class="name">{{food.name}}</span>
<div class="price">
<span>¥{{food.price*food.count}}</span>
</div>
<div class="cartcontrol-wrapper">
<cartcontrol @add="addFood" :food="food"></cartcontrol>
</div>
</li>
</ul>
</div>
</div>
</transition>
<transition name="fade">
<div class="list-mask" @click="hideList" v-show="listShow"></div>
</transition>
</div>
</template>
複製代碼
購物車列表的顯示和隱藏以及清空按鈕是經過數據fold來決定的,購物車列表是經過計算屬性listshow來實現,清空按鈕也是經過設置count屬性來實現,這樣都達到了不用操做dom就能夠改變dom行爲的效果。
<script>
import { SubmitBar } from 'vant';
import BScroll from 'better-scroll';
import cartcontrol from './cartcontrol';
export default {
props: {
selectFoods: {
type: Array,
default() {
return [
{
price: 10,
count: 1
}
]
}
},
},
data() {
return {
setloading: false,
fold: true
}
},
computed: {
totalCount () {
let count = 0
this.selectFoods.forEach((food) => {
count += food.count
})
return count
},
totalPrice () {
let total = 0
this.selectFoods.forEach((food) => {
total += food.price * food.count * 100
})
return total
},
listShow () {
if (!this.totalCount) {
this.fold = true
return false
}
let show = !this.fold
if (show) {
this.$nextTick(() => {
if (!this.scroll) {
this.scroll = new BScroll(this.$refs.listContent, {
click: true
})
} else {
this.scroll.refresh()
}
})
}
return show
}
},
methods: {
toggleList(){
console.log(this.totalCount)
if (!this.totalCount) {
return;
}
this.fold = !this.fold;
},
onSubmit() {
this.setloading = true
},
empty() {
this.selectFoods.forEach((food) => {
food.count = 0;
});
},
hideList() {
this.fold = true;
},
addFood() {}
},
components: {
cartcontrol
}
}
</script>
複製代碼
這個模塊主要經過三個小模塊實現,刪除按鈕,顯示數量塊,增長按鈕
<template>
<div class="cartcontrol">
<transition name="move">
<div class="cart-decrease" v-show="food.count > 0" @click="decreaseCart">
<div class="inner">
<img width="15px" height="15px" src="../../images/jian.png" alt="">
</div>
</div>
</transition>
<div class="cart-count" v-show="food.count > 0">{{food.count}}</div>
<div class="cart-add" @click="addCart">
<img width="15px" height="15px" src="../../images/add.png" alt="">
</div>
</div>
</template>
複製代碼
addCart以及decreaseCart方法,默認會傳入event原生dom事件,food數據是從父組件傳入的,因此對這個數據的修改,也可以反應到父組件,也由於購物車的數據也是從父組件傳入的,使用同一個food數據,從而關聯到購物車的購買數量統計。
<script>
export default {
name: "cartcontrol",
props: {
food: {
type: Object
}
},
data() {
return {
}
},
methods: {
addCart (event) {
console.log(event)
if (!event._constructed) {
return
}
if (!this.food.count) {
this.$set(this.food, 'count', 1)
} else {
this.food.count++
}
this.$emit('add', event.target)
},
decreaseCart (event) {
if (!event._constructed) {
return
}
if (this.food.count) {
this.food.count--
}
}
},
}
</script>
複製代碼
<div class="various" v-for="(item,index) in various" :key="index">
<div class="title">
<div class="strip"></div>
<p>{{item[0].name}}</p>
<div class="strip"></div>
</div>
<div class="various_img">
<div class="various_title">
<img :src="item[0].urll" alt="">
</div>
<div ref="listwrapper" class="index">
<div class="various_list">
<div class="various_box" v-for="(u,i) in item.slice(1)" :key="i">
<img :src="u.url" alt="">
</div>
</div>
</div>
</div>
</div>
複製代碼
這裏循環嵌套,整個DOM結構都是循環出來的,而better-scroll須要操做DOM結構,要實現橫向滑動效果,不免會有異步問題。
但是不管我使用.then或者$nextTick都沒法掛載better-scroll,查閱了大量文檔也沒法解決,最後只能使用原生的overflow-X,如果有解決辦法,歡迎提出,感激涕零!
總的來講這個項目還有不少不足,實現的功能也不多,後續我會繼續改進。
若是這篇文章對你有幫助,不妨點個贊吧!
GitHub地址