<!--重量体积计算-->
<template>
<view class="boxBg">
<view class="goodsCon">
<view class="item">
<text>预估重量</text>
<view class="bg goodInfo">
<view
class="symbol"
:class="isLessThan ? 'active' : ''"
@click="handleMinus"
>-</view
>
<view class="num">
<input
class="uni-input"
type="number"
maxlength="6"
v-model="weight"
@blur="handleSymbol"
/>
<text>kg</text>
</view>
<view
class="symbol"
:class="isExceed ? 'active' : ''"
@click="handleAdd"
>+</view
>
</view>
</view>
<view class="item">
<text>总体积</text>
<view class="bg goodInfo">
<!-- 暂时去除 :class="isLessThanVolume ? 'active' : ''" -->
<view class="symbol" @click="handleVolumeMinus">-</view>
<view class="num">
<input
class="uni-input"
type="number"
maxlength="6"
v-model="volume"
@blur="handleVolume"
/>
<text>m³</text>
</view>
<!-- 暂时去除 :class="isExceedVolume ? 'active' : ''" -->
<view class="symbol" @click="handleVolumeAdd">+</view>
</view>
</view>
<view class="item calculate">
<view class="bg">
<input
class="uni-input"
type="number"
maxlength="3"
v-model="measureLong"
placeholder="长"
@input="handleCalculate"
/>
<text :class="measureLong ? 'active' : ''">cm</text>
</view>
<text>*</text>
<view class="bg">
<input
class="uni-input"
type="number"
maxlength="3"
v-model="measureWidth"
placeholder="宽"
@input="handleCalculate"
/>
<text :class="measureWidth ? 'active' : ''">cm</text>
</view>
<text>*</text>
<view class="bg">
<input
class="uni-input"
type="number"
maxlength="3"
v-model="measureHigh"
placeholder="高"
@input="handleCalculate"
/>
<text :class="measureHigh ? 'active' : ''">cm</text>
</view>
</view>
</view>
</view>
</template>
<script setup>
import { ref, watch, nextTick } from "vue";
// ------定义变量------
let weight = ref(1); //重量
let volume = ref(0); //体积
let measureLong = ref(null); //长
let measureWidth = ref(null); //宽
let measureHigh = ref(null); //高
let isLessThan = ref(true); //判断重量是否小于0.1
let isExceed = ref(false); //判断重量是否大于9999
let isLessThanVolume = ref(true); //判断体积是否小于0.0001m³
let isExceedVolume = ref(false); //判断体积是否大于99m³
// 暴漏给父组件
defineExpose({
weight,
volume,
measureLong,
measureWidth,
measureHigh,
});
// ------生命周期------
// 监听重量数值，小数点后保留一位
watch(weight, (newValue, oldValue) => {
const val = Number(newValue);
nextTick(() => {
// 数值小于0.1并且大于0 数值默认为1
if (val < 0.1 && val > 0) {
weight.value = 1;
}
// 处理小数点，小数点保留1位
if (val > 0.1) {
weight.value = parseInt(val * 10) / 10;
}
// 数值小于等于1 左侧按钮置灰
if (val <= 1) {
isLessThan.value = true; //左侧减号置灰
} else {
isLessThan.value = false; //左侧减号去除置灰
if (val >= 9999) {
weight.value = 9999;
isExceed.value = true; //右侧加号置灰
} else {
isExceed.value = false; //右侧加号去除置灰
}
}
});
});
// 监听长，取整
watch(measureLong, (newValue, oldValue) => {
const val = Number(newValue);
nextTick(() => {
measureLong.value = Math.floor(val);
if (newValue <= 0) {
measureLong.value = null;
}
});
});
// 监听宽，取整
watch(measureWidth, (newValue, oldValue) => {
const val = Number(newValue);
nextTick(() => {
measureWidth.value = Math.floor(val);
if (newValue <= 0) {
measureWidth.value = null;
}
});
});
// 监听高，取整
watch(measureHigh, (newValue, oldValue) => {
const val = Number(newValue);
nextTick(() => {
measureHigh.value = Math.floor(val);
if (newValue <= 0) {
measureHigh.value = null;
}
});
});
// ------定义方法------
//触发重量输入如果输入0，自动判断为1kg,最小可输入值为0.1kg,最大值为9999kg
const handleSymbol = (e) => {
const value = e.detail.value;
if (value < 0.1) {
weight.value = 1;
isLessThan.value = true; //左侧减号置灰
} else {
if (value > 0.1 && value <= 1) {
isLessThan.value = true;
} else {
isLessThan.value = false; //左侧减号去除置灰
}
if (value >= 9999) {
isExceed.value = true; //右侧加号置灰
weight.value = 9999;
} else {
isExceed.value = false; //右侧加号去除置灰
}
}
};
// 减重量
const handleMinus = () => {
// 重量减去1
if (weight.value > 1) {
weight.value--;
isExceed.value = false; //右侧加号去除置灰
weight.value = weight.value.toFixed(1);
}
if (weight.value <= 0) {
weight.value = 1;
isLessThan.value = true; //左侧减号置灰
}
};
// 加重量
const handleAdd = () => {
// 重量加1
if (weight.value < 9999) {
++weight.value;
isLessThan.value = false; //左侧减号去除置灰
}
if (weight.value === 9999) {
isExceed.value = true; //右侧加号置灰
}
};
// 体积
const handleVolume = (e) => {
const value = Number(e.detail.value);
if (value < 0.0001) {
volume.value = 0;
} else {
if (value > 99) {
volume.value = 99;
return uni.showToast({
title: "体积最大可不能超过99m³",
duration: 1000,
icon: "none",
});
}
}
};
// 减体积
const handleVolumeMinus = () => {
// 体积减去1
if (volume.value > 1) {
volume.value--;
volume.value = parseInt(volume.value * 10000) / 10000;
}
// 体积
if (volume.value <= 0 || volume.value === 1) {
volume.value = 0;
}
};
// 加体积
const handleVolumeAdd = () => {
// 体积加1
if (volume.value < 99) {
++volume.value;
isLessThanVolume.value = false; //左侧减号去除置灰
}
if (volume.value === 99) {
isExceedVolume.value = true; //右侧加号置灰
}
};
// 计算立方米
const handleCalculate = () => {
const long = measureLong.value; //长
const wide = measureWidth.value; //宽
const height = measureHigh.value; //高
// 长宽高都大于1才可以计算
if (long >= 1 && wide >= 1 && height >= 1) {
nextTick(() => {
// 计算立方米：长/100*宽/100*高/100
let val = (long / 100) * (wide / 100) * (height / 100);
// 立方米必须大于0.0001
if (val < 0.0001) {
volume.value = 0;
} else if (val > 99) {
// 小数点后保留四位小数
isExceedVolume.value = true; //右侧加号置灰
volume.value = 99;
return uni.showToast({
title: "体积最大可不能超过99m³",
duration: 1000,
icon: "none",
});
} else {
volume.value = parseInt(val * 10000) / 10000;
// 如果体积大于1左侧减号按钮去除置灰
if (val > 1) {
isLessThanVolume.value = false; //左侧减号去除置灰
} else {
isLessThanVolume.value = true; //左侧减号置灰
}
isExceedVolume.value = false; //右侧加号去除置灰
}
});
}
};
</script>