【商城】加减乘除精度计算,单选,全选,总金额,订单页面

商城复用

      • 1,加减乘除精度计算,亲测好使!
      • 2,结算页面data
        • 计算总金额
        • 单选
        • 全选
      • 3,订单页面展示(商城太多,记录下来复用,持续更新~)
      • app.vue我写了全局css
        • 商城页面代码直接用

1,加减乘除精度计算,亲测好使!

  • 新建calculation.js文件
  • 页面导入使用import culation from “@/common/calculation.js”
  • 使用。类似culation.accMul(数值1, 数值2)
// 精度计算

function accAdd(num1, num2) { // 加法
	var p1 = 0;
	var p2 = 0;
	if (num1.toString().split('.').length > 1) {
		p1 = num1.toString().split('.')[1].length;
	}
	if (num2.toString().split('.').length > 1) {
		p2 = num2.toString().split(".")[1].length;
	}

	var n1 = num1 * Math.pow(10, 2);
	var n2 = num2 * Math.pow(10, 2);
	var result = (n1 + n2).toFixed(2) / Math.pow(10, 2);
	return result;
}

function accSub(num1, num2) { // 减法
	var p1 = 0;
	var p2 = 0;
	if (num1.toString().split('.').length > 1) {
		p1 = num1.toString().split('.')[1].length;
	}
	if (num2.toString().split('.').length > 1) {
		p2 = num2.toString().split(".")[1].length;
	}
	var n1 = num1 * Math.pow(10, 2);
	var n2 = num2 * Math.pow(10, 2);
	var result = (n1 - n2).toFixed(2) / Math.pow(10, 2);
	return result;
}

function accMul(num1, num2) {
	let result = num1 * num2
	if (Number.isInteger(result)) {
		return result
	} else {
		return Math.round(result * 100) / 100
	}
}
function accDiv(a, b) { // 除法
	let result = num1/num2
	if (Number.isInteger(result)) {
		return result
	} else {
		return Math.round(result * 100) / 100
	}
}
export default {
	accAdd,
	accSub,
	accMul,
	accDiv
}

2,结算页面data

data() {
	return {
			carlist: [], //购物车列表
			allChecked: false,//全选
	}
}

计算总金额

computed: {
	allprice() {
		let price = 0;
		this.carlist.map(item => {
			item.checked ? price += item.num * item.goods_price : price += 0
		})
		return price
	}
},

单选

//单选
changecheck(item) {
	item.checked = !item.checked
	if (!item.checked) {
		this.allChecked = false
	} else {
		const cartList = this.carlist.every(item => {
			return item.checked === true
		})
		if (cartList) {
			this.allChecked = true
		} else {
			this.allChecked = false
		}
	}
},

全选

// 全选
selectAll() {
	this.allChecked = !this.allChecked
	if (this.allChecked) {
		this.carlist.map(item => {
			item.checked = true
		})
	} else {
		this.carlist.map(item => {
			item.checked = false
		})
	}
},

3,订单页面展示(商城太多,记录下来复用,持续更新~)

【商城】加减乘除精度计算,单选,全选,总金额,订单页面_第1张图片

app.vue我写了全局css

<style lang="scss">
.flex {
		display: flex;
	}
	
	.flexOne {
		flex: 1;
	}
	
	.flexColumn {
		flex-direction: column;
	}
	
	.wrap {
		flex-wrap: wrap;
	} 
	
	.noWrap {
		flex-wrap: nowrap;
	}
	
	.alignCenter {
		align-items: center;
	}
	
	.justifyCenter {
		justify-content: center;
	}
	
	.alignBetween {
		align-content: space-between;
	}
	
	.justifyBetween {
		justify-content: space-between;
	}
	
	.alignStart {
		align-items: flex-start;
	}
	
	.justifyStart {
		justify-content: flex-start;
	}
	
	.alignEnd {
		align-items: flex-end;
	}
	
	.justifyEnd {
		justify-content: flex-end;
	}
	
	.justifyaround {
		justify-content: space-around;
	}
</style>

商城页面代码直接用

<template>
	<view>
		<view class="nev flex justifyBetween">
			<view class="nev_bar" :class="{newbar:nevindex==index}" v-for="(item,index) in nevlist" :key="index">
				{{item}}
			</view>
		</view>
		<view class="main">
			<view class="box" v-for="(item,index) in 4" :key="index">
				<view class="boxtop flex justifyBetween">
					<view class="order">
						订单编号 777777
					</view>
					<view class="status">
						待支付
					</view>
				</view>
				<view class="cont  flex alignCenter justifyBetween">
					<view class="img">
						<image src="/static/bg.png" mode=""></image>
					</view>
					<view class="contant">
						<view class="txt2">
							订单名称
						</view>
						<view class="txt3">
							商品规格 商品规格2
						</view>
					</view>
					<view class="last">
						<view class="money">333
						</view>
						<view class="num">
							共一件
						</view>
					</view>
				</view>
				<view class="btngroup flex justifyEnd">
					<view class="btn1">
						取消订单
					</view>
					<view class="btn2">
						去支付
					</view>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				nevlist: ['待付款', '待发货', '待收货', '已完成', '售后'],
				nevindex: 0,
			}
		},
		methods: {

		}
	}
</script>

<style lang="scss">
	page {
		background-color: #F7F8FA;
	}

	.nev {
		padding: 24rpx 32rpx;
		background-color: #ffffff;

		.nev_bar {
			color: #000000e6;
			font-size: 28rpx;
			font-weight: 400;
			font-family: "PingFang SC";
		}

		.newbar {
			position: relative;
			color: #a91e25ff;
			font-size: 28rpx;
			font-weight: 600;
			font-family: "PingFang SC";

			&::after {
				content: "";
				display: inline-block;
				width: 24rpx;
				height: 6rpx;
				border-radius: 3rpx;
				background: #a91e25ff;
				position: absolute;
				bottom: -16rpx;
				left: 50%;
				transform: translate(-50%);
			}
		}
	}

	.main {
		padding: 0 32rpx;

		.box {
			margin-top: 24rpx;
			padding: 24rpx;
			background-color: #ffffff;

			.boxtop {
				.order {
					color: #00000042;
					font-size: 26rpx;
					font-weight: 400;
					font-family: "PingFang SC";
				}

				.status {
					color: #a91e25ff;
					font-size: 24rpx;
					font-weight: 400;
					font-family: "PingFang SC";
				}
			}

			.cont {
				margin-top: 24rpx;

				.img {
					margin-right: 16rpx;

					image {
						width: 144rpx;
						height: 144rpx;
						border-radius: 16rpx;
						opacity: 1;
					}
				}

				.contant {
					flex: 1;

					.txt2 {
						color: #323233ff;
						font-size: 26rpx;
						font-weight: 400;
						font-family: "PingFang SC";
					}

					.txt3 {
						margin-top: 3rpx;
						color: #969799ff;
						font-size: 24rpx;
						font-weight: 400;
						font-family: "PingFang SC";
					}
				}

				.last {
					margin-left: 70rpx;

					.money {
						color: #323233ff;
						font-size: 30rpx;
						font-weight: 600;

						text {
							color: #323233ff;
							font-size: 20rpx;
							font-weight: 500;
							font-family: "PingFang SC";
						}
					}

					.num {
						color: #969799ff;
						font-size: 24rpx;
						font-weight: 400;
						font-family: "PingFang SC";
					}
				}
			}

			.btngroup {
				.btn1 {
					margin-left: 24rpx;
					width: 168rpx;
					height: 64rpx;
					border-radius: 178rpx;
					opacity: 1;
					color: #646566ff;
					font-size: 26rpx;
					font-weight: 400;
					font-family: "PingFang SC";
					text-align: center;
					line-height: 64rpx;
					border: 1rpx solid #c8c9ccff;
				}

				.btn2 {
					margin-left: 24rpx;
					width: 168rpx;
					height: 64rpx;
					border-radius: 178rpx;
					opacity: 1;
					color: #ffffffff;
					font-size: 26rpx;
					font-weight: 400;
					font-family: "PingFang SC";
					text-align: center;
					line-height: 64rpx;
					background: #a91e25ff;
				}
			}
		}
	}
</style>

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