本篇文章给大家分享的是有关怎么在小程序中实现一个外卖订单界面，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
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1.wxml
{{item.name}}
{{item.name}}
{{itm.title}}
{{itm.info}}
¥{{itm.price}}
{{totalNum}}
¥{{totalMoney}}
去结算
已选商品
清空
{{item.name}}
¥{{item.price}}
{{goodDetail.title}}
¥{{goodDetail.price}}
{{goodDetail.info}}
2.script
createPage({
data: {
foodsList: [], // 商品数据
cartList: [], // 购物车数据
isShowCartMask: false,
totalNum: 0,
totalMoney: 0,
initView: 'item0', // 根据此变量的变化，控制左侧选中状态、右侧滑动
curId: 'item0',
isShowDetail: false,
goodDetail: {},
screenWidth: 0, // 手机屏幕宽度
heightArray: [0] // 右侧每一个类型的高度区间数组
},
onLoad() {
this.getGoodsData()
},
methods: {
async getGoodsData() {
const that = this
const res = await getGoodsInfo({})
this.foodsList = res
wx.getSystemInfo({
success: (ress) => {
that.screenWidth = ress.windowWidth
}
})
this.getHeightSection()
},
// 设置高度区间 所有单位转化为rpx
getHeightSection() {
const that = this
let hg = 0
for (let index = 0; index < that.foodsList.length - 1; index++) {
hg += 70 + that.foodsList[index].list.length * 212
that.heightArray.push(hg)
}
},
// 获取高度区间的下标
getHeightIndex(arr, hg) {
const that = this
arr.forEach((item, index) => {
if (hg >= item) {
that.setData({
curId: 'item' + index
})
}
})
},
// 左边菜单控制右边
scrollToViewFn(e) {
this.setData({
initView: e.target.dataset.id,
curId: e.target.dataset.id
})
},
// 右边滚动控制左边
onPageScroll(e) {
const that = this
let scrollTop = e.detail.scrollTop * 750 / that.screenWidth
this.getHeightIndex(that.heightArray, scrollTop)
},
// 商品列表的减号点击
reduceNum(index, ind, item) {
const that = this
let val = 'foodsList[' + index + '].list[' + ind + '].num'
this.setData({
[val]: item.num - 1
})
// 如果商品为0，就把当前商品在购物车清除
// 如果不为0， 就将当前商品数量减1
if (that.foodsList[index].list[ind].num === 0) {
that.removeAarry(that.cartList, item.id)
} else {
that.cartList.forEach((itm, i) => {
if (itm.id === item.id) {
let value = 'cartList[' + i + '].num'
that.setData({
[value]: itm.num - 1
})
}
})
}
this.computed()
},
// 商品列表的加号点击
addNum(index, ind, item) {
const that = this
let val = 'foodsList[' + index + '].list[' + ind + '].num'
this.setData({
[val]: item.num + 1
})
// 如果商品为1，就把当前商品加入购物车
// 否则， 就将当前商品数量加1
if (that.foodsList[index].list[ind].num === 1) {
let val = { id: item.id, name: item.title, price: item.price, num: 1, index: index, ind: ind, pic: item.pic }
that.cartList.push(val)
} else {
that.cartList.forEach((itm, i) => {
if (itm.id === item.id) {
let value = 'cartList[' + i + '].num'
that.setData({
[value]: itm.num + 1
})
}
})
}
this.computed()
},
// 购物车的减号点击
reduceCart(index, item) {
const that = this
let val = 'foodsList[' + item.index + '].list[' + item.ind + '].num'
let val1 = 'cartList[' + index + '].num'
this.setData({
[val]: item.num - 1,
[val1]: item.num - 1
})
// 如果商品为0，就把当前商品在购物车清除
// 如果不为0， 就将当前商品数量减1
if (that.cartList[index].num === 0) {
that.removeAarry(that.cartList, item.id)
}
this.computed()
},
// 购物车的加号点击
addCart(index, item) {
const that = this
let val = 'cartList[' + index + '].num'
that.setData({
[val]: item.num + 1
})
this.computed()
},
// 清空购物车
clearCart() {
const that = this
wx.showModal({
title: '提示',
content: '清空购物车？',
success: function (res) {
if (res.confirm) {
that.setData({
cartList: []
})
that.foodsList.forEach((item, i) => {
item.list.forEach((itm, j) => {
let value = 'foodsList[' + i + '].list[' + j + '].num'
that.setData({
[value]: 0
})
})
})
that.computed()
}
}
})
},
// 计算选择商品总价格和总数量
computed() {
const that = this
let num = 0
let money = 0
that.cartList.forEach(item => {
num += item.num
money += parseFloat(item.price) * item.num
})
that.setData({
totalNum: num,
totalMoney: money
})
},
// 将数量为0的时候，对应商品在购物车中删除
removeAarry(arr, id) {
arr.forEach((item, index) => {
if (item.id === id) {
arr.splice(index, 1)
}
})
return arr
},
showCartMask() {
this.isShowCartMask = !this.isShowCartMask
},
hiddenCartMak() {
this.isShowCartMask = false
},
stopMaopao() {
},
showGoodDetail(item) {
this.goodDetail = item
this.isShowDetail = true
},
hideDetail() {
this.isShowDetail = false
},
// 订单提交
submitOrder() {
}
}
})3.css
@import '../../style/base.scss';
page {
height: 100%;
}
.container {
height: 100vh;
background-color: #fff;
box-sizing: border-box;
overflow: hidden;
.dialog1{
width: 100%;
height: 100vh;
position: fixed;
top: 0;
left: 0;
background-color: rgba(0,0,0, 0.5);
z-index: 4;
.detbox{
position: fixed;
bottom: 0;
left: 0;
right: 0;
background-color: #fff;
width: 100%;
max-height: 700rpx;
overflow-y: auto;
color: #333;
border-radius: 40rpx 40rpx 0 0;
.img{
width: 100%;
height: 375rpx;
background: rgba(0,0,0,0.6);
}
.box{
padding: 20rpx 30rpx 40rpx;
box-sizing: border-box;
.tit{
font-size: 28rpx;
color: #333;
font-weight: bold;
}
.money{
font-size: 26rpx;
color: #f00;
margin: 10rpx 0;
}
.desc{
font-size: 22rpx;
color: #666;
line-height: 32rpx;
}
}
.close{
width: 50rpx;
height: 50rpx;
position: absolute;
right: 20rpx;
top: 20rpx;
display: flex;
align-items: center;
justify-content: center;
image{
width: 40rpx;
height: 40rpx;
}
}
}
}
.dialog{
width: 100%;
height: 100vh;
position: fixed;
top: 0;
left: 0;
background-color: rgba(0,0,0, 0.5);
z-index: 2;
.boxs{
position: fixed;
bottom: 80rpx;
left: 0;
right: 0;
z-index: 6;
background-color: #fff;
width: 100%;
max-height: 600rpx;
color: #333;
.title-block{
padding: 0 30rpx;
box-sizing: border-box;
display: flex;
align-items: center;
justify-content: space-between;
height: 70rpx;
background: #EEF0F1;
text{
font-size: 26rpx;
color: #666;
}
.clear{
font-size: 22rpx;
color: #888;
display: flex;
align-items: center;
image{
width: 24rpx;
height: 24rpx;
margin-right: 10rpx;
}
}
}
.content{
width: 100%;
max-height: 530rpx;
overflow-y: auto;
padding-bottom: 30rpx;
box-sizing: border-box;
.item{
width: 690rpx;
height: 80rpx;
line-height: 80rpx;
margin: 0 auto;
position: relative;
display: flex;
align-items: center;
justify-content: space-between;
&::after{
position: absolute;
width: 100%;
height: 1rpx;
background: #f2f2f2;
content: '';
bottom: 1rpx;
left: 0;
}
.tit{
width: 400rpx;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
font-size: 28rpx;
color: #333;
}
.right{
display: flex;
justify-content: flex-start;
align-items: center;
height: 80rpx;
text{
font-size: 26rpx;
color: #f00;
}
.box{
display: flex;
justify-content: flex-start;
align-items: center;
flex-wrap: nowrap;
margin-left: 20rpx;
height: 80rpx;
.icon{
width: 34rpx;
height: 34rpx;
display: flex;
align-items: center;
justify-content: center;
image{
width: 34rpx;
height: 34rpx;
}
}
input{
width: 60rpx;
height: 34rpx;
border: none;
color: #333;
text-align: center;
font-size: 26rpx;
}
}
}
}
}
}
}
.index-cont{
height: calc(100vh - 80rpx);
display: flex;
justify-content: space-between;
.index-left{
width: 160rpx;
height: 100%;
background: #efefef;
.item{
font-size: 26rpx;
color: #333;
border-bottom: 1rpx dashed #666;
height: 80rpx;
line-height: 80rpx;
padding: 0 20rpx;
box-sizing: border-box;
&.on{
background: #fff;
}
}
}
.index-right{
width: 590rpx;
height: 100%;
.boxs{
padding: 0 30rpx;
box-sizing: border-box;
width: 100%;
}
.index-title{
height: 70rpx;
line-height: 70rpx;
background: #f7f7f7;
padding-left: 30rpx;
font-size: 26rpx;
color: #666;
box-sizing: border-box;
}
.item{
padding: 30rpx 0;
box-sizing: border-box;
display: flex;
justify-content: space-between;
position: relative;
height: 212rpx;
&::after{
position: absolute;
top: 0rpx;
left: 0;
background: #ccc;
width: 100%;
height: 1rpx;
content: '';
}
.pic{
width: 150rpx;
height: 150rpx;
image{
width: 100%;
height: 100%;
}
}
.main{
width: 380rpx;
padding-left: 30rpx;
box-sizing: border-box;
.tit{
font-size: 26rpx;
color: #333;
font-weight: bold;
}
.desc{
font-size: 22rpx;
color: #999;
line-height: 30rpx;
margin: 5rpx 0 10rpx;
min-height: 65rpx;
}
.money{
font-size: 28rpx;
color: #f00;
}
}
.box{
display: flex;
justify-content: flex-start;
align-items: center;
flex-wrap: nowrap;
margin-left: 10rpx;
height: 34rpx;
position: absolute;
right: 0;
bottom: 30rpx;
.icon{
width: 34rpx;
height: 34rpx;
display: flex;
align-items: center;
justify-content: center;
image{
width: 34rpx;
height: 34rpx;
}
}
input{
width: 60rpx;
height: 34rpx;
border: none;
color: #333;
text-align: center;
font-size: 26rpx;
}
}
}
}
}
.index-cart{
width: 100%;
height: 80rpx;
display: flex;
align-items: center;
justify-content: flex-start;
position: relative;
z-index: 3;
.left{
width: 470rpx;
height: 100%;
background: #3e3a39;
display: flex;
align-items: center;
justify-content: flex-start;
.cart-num{
width: 100rpx;
height: 100rpx;
background: #6E6D6C;
position: relative;
padding:25rpx;
box-sizing: border-box;
border-radius: 100%;
top: -30rpx;
left: 22rpx;
&.on{
background: $base-color;
}
image{
width: 50rpx;
height: 50rpx;
}
text{
font-size: 20rpx;
color: #fff;
display: inline-block;
padding: 0 9rpx;
box-sizing: border-box;
position: absolute;
right: 3rpx;
top: -3rpx;
height: 30rpx;
line-height: 30rpx;
border-radius: 30rpx;
background: #f00;
}
}
.cart-money{
color: #fff;
font-size: 30rpx;
margin-left: 50rpx;
}
}
.order-btn{
width: 280rpx;
height: 100%;
background: $base-color;
font-size: 28rpx;
color: #fff;
display: flex;
align-items: center;
justify-content: center;
}
}
}
4.ps
小程序使用mpx为框架；
商品列表数据根据接口获取，测试数据可以根据mock数据测试
实际数据类型是
goodLists: [
{
id: 'xx',
name: 'xx', // 商品类型
list: [ // 当前商品类型对应的所有商品
{
id: 'xx',
title: 'xx'，
pic: 'xx',
price: 'xx',
detail: 'xx',
num: '' // num是为了我方便对商品加减操作，让后端加的
}
]
}
]以上就是怎么在小程序中实现一个外卖订单界面，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注创新互联行业资讯频道。
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