微信小程序简单实现购物车功能-编程知识

微信小程序简单实现购物车功能

微信小程序简单实现购物车结算和购物车列表展示功能

实现在微信小程序中对每一个购物车界面的商品订单，进行勾选结算和取消结算的功能，相关界面截图如下：

具体实现示例代码为：
1、js代码：

Page({/*** 页面的初始数据*/data: {checked: false,checkAll: false,dataList: [{id: '000',img: 'https://img-blog.csdnimg.cn/img_convert/0e449547f8e5354646f76af0d1b4800a.png',content: '生活百般滋味，编写不易，关注博主，分享更多内容呦',price: 3289,showPrice: '32.89',number: 1},{id: '111',img: 'https://img2.baidu.com/it/u=2681955314,221996905&fm=253&fmt=auto&app=138&f=JPEG?w=450&h=300',content: '努力学习，天天向上，进我主也查看更多内容',price: 2456,showPrice: '24.56',number: 2}, {id: '222',img: 'https://img-blog.csdnimg.cn/img_convert/0e449547f8e5354646f76af0d1b4800a.png',content: '关注博主，分享更多内容，欢迎批评指导',price: 3289,showPrice: '89.89',number: 5},],totalMoney: '0.00',selectDatas: []},// 查看详情detailClick(e) {let data = e.currentTarget.dataset.item;wx.showToast({title: '点击了查看详情',icon: 'none'})console.log('详情数据：', data)},// 单选checkboxChange(e) {let money = 0,str = [];let attr = e.detail.value;let list = this.data.dataList;for (let i = 0; i < list.length; i++) {for (let k = 0; k < attr.length; k++) {if (list[i].id === attr[k]) {money += list[i].price * list[i].number;str.push(list[i]);}}}this.setData({selectDatas: str,totalMoney: (money / 100).toFixed(2),checkAll: (list.length == attr.length && list.length > 0) ? true : false})},// 全选checkboxChangeAll(e) {let money = 0,str = [];let val = e.detail.value;let list = this.data.dataList;if (val.length > 0) {for (let i = 0; i < list.length; i++) {money += list[i].price * list[i].number;str.push(list[i]);}this.setData({checked: true,selectDatas: str,totalMoney: (money / 100).toFixed(2)})} else {this.setData({checked: false,selectDatas: [],totalMoney: '0.00'})}},// 结算totalClick() {let list = this.data.selectDatas;if (list.length < 1) {wx.showToast({title: '无结算订单',icon: 'error'})return false;}wx.showModal({title: '提示',content: '确定结算当前订单吗？',complete: (res) => {if (res.confirm) {wx.showToast({title: '结算完成',})}}})},
})

2、wxml代码：

<view class="bg-color"></view>
<view class="car-box"><checkbox-group bindchange="checkboxChange"><view class="row-data" wx:for="{{dataList}}" wx:for-index="index" wx:key="item"><view class="row-btn"><checkbox value="{{item.id}}" checked="{{checked}}" /></view><view class="row-list" bind:tap="detailClick" data-item="{{item}}"><view class="row-img"><image src="{{item.img}}" mode="aspectFill" /></view><view class="row-info"><view class="row-text">{{item.content}}</view><view class="row-price"><view><text class="row-icon">￥</text><text class="row-money">{{item.showPrice}}</text></view><view><text class="btn">x{{item.number}}</text></view></view></view></view></view></checkbox-group>
</view>
<!-- 结算 -->
<view class="footer-box"><view><checkbox-group bindchange="checkboxChangeAll"><label class="level"><checkbox value="all" checked="{{checkAll}}" />全选</label></checkbox-group></view><view class="level"><view><text>合计：</text><text class="total-btn row-icon">￥</text><text class="total-btn row-money">{{totalMoney}}</text></view><view class="total-end" bind:tap="totalClick">结 算</view></view>
</view>

3、wxss代码：

page {font-size: 32rpx;background-color: #f1f1f1;
}.bg-color {background-color: #008B8B;height: 200rpx;width: 100%;
}.car-box {min-height: 300rpx;border-radius: 20rpx;background-color: white;margin: -190rpx 20rpx 20rpx 20rpx;padding: 20rpx 10rpx;
}.row-data {display: flex;flex-direction: row;align-items: center;margin-top: 20rpx;
}.row-btn {width: 10%;text-align: center;
}.row-list {width: 90%;display: flex;flex-direction: row;
}.row-img {width: 30%;background-color: #f1f1f1;
}.row-info {width: 70%;display: flex;flex-direction: column;justify-content: space-between;margin-left: 20rpx;
}.row-img image {width: 100%;height: 200rpx;
}.row-text {display: -webkit-box;-webkit-box-orient: vertical;-webkit-line-clamp: 2;text-overflow: ellipsis;overflow: hidden;font-size: 30rpx;
}.row-price {display: flex;flex-direction: row;justify-content: space-between;
}.row-price view:first-child {color: #FA5422;
}.row-icon {font-size: 26rpx;
}.row-money {font-weight: bold;
}.btn {padding: 5rpx 20rpx;font-size: 28rpx;color: gray;
}checkbox {zoom: .8;
}.footer-box {position: fixed;bottom: 0;left: 0;right: 0;z-index: 999;height: 100rpx;display: flex;flex-direction: row;align-items: center;justify-content: space-between;background-color: white;padding: 0 20rpx;
}.level {display: flex;flex-direction: row;align-items: center;
}.total-btn {color: #FA5422;
}.total-end {background-color: #008B8B;margin-left: 20rpx;padding: 15rpx 50rpx;border-radius: 50rpx;font-size: 30rpx;color: white;
}