如果在最后一行的第一列中选择了选项,我将在表中动态添加带有选择和输入的新行。
它看起来像这样https://jsfiddle.net/zgykgery/所以当您选择“服务”时,会添加新行,并且该行的总价格是根据服务价格、默认 10% 的折扣和金额计算的。
我的服务价格有点笨拙,
:value="item.id+'|'+item.price"
所以我有过滤器从价值中获取它。但它有效,现在我不知道如何循环遍历所有行和总服务价格,而没有折扣、总折扣,然后是全价和服务价格和折扣。
我知道我应该使用计算属性或观察者,但不知道如何。
如何计算表格中这些值的总和并将它们显示在下面的较小表格中?
更新
我是 vue 的新手,没有使用计算属性,所以这是我尝试过的,但没有成功:
var Main = {
data() {
return {
rows_top: [{
service: '',
position: '',
visit: '',
amount: '',
discount: 10
}],
services: [{
id: 1,
name: 'Service1',
price: 100
},
{
id: 2,
name: 'Service2',
price: 200
},
{
id: 3,
name: 'Service3',
price: 300
},
],
total_discount: 0,
total_full_price: 0
}
},
methods: {
addRow(row, index) {
// console.log(row)
if (this.rows_top[this.rows_top.length - 1].service !== '') {
this.rows_top.push({
service: '',
position: '',
visit: '',
amount: '',
discount: 10
})
}
},
deleteRow(index) {
this.rows_top.splice(index, 1)
}
},
computed: {
total_price: () => {
if (this.rows_top) {
return this.rows_top.map((r) => {
return r.amount * this.$options.filters.after_line(r.service)
})
}
}
},
filters: {
after_line: (value) => {
if (!value) return ''
let after = value.split('|')
return after.pop()
}
}
}
var Ctor = Vue.extend(Main)
new Ctor().$mount('#app')
@import url("//unpkg.com/element-ui@2.0.11/lib/theme-chalk/index.css");
table {
border-collapse: collapse
}
table,
th,
td {
border: 1px solid #ddd
}
th,
td {
padding: 5px
}
tr:nth-child(odd) {
background-color: #f9f9f9
}
<script src="//unpkg.com/vue/dist/vue.js"></script>
<script src="//unpkg.com/element-ui@2.2.0/lib/index.js"></script>
<div id="app">
<template>
<table>
<thead>
<tr>
<th>Service</th>
<th>Position</th>
<th>Visit</th>
<th>Amount</th>
<th>Price</th>
<th>Discount %</th>
<th>Full price</th>
</tr>
</thead>
<tbody>
<tr v-for="(row, index) in rows_top">
<td>
<el-select placeholder="Select" filterable="filterable" @change="addRow(row, index)" v-model="row.service">
<el-option v-for="item in services" :key="item.id" :label="item.name" :value="item.id+'|'+item.price"></el-option>
</el-select>
</td>
<td>
<el-select placeholder="Select" v-model="row.position" multiple="multiple" filterable="filterable" allow-create="allow-create" @change="checkNumber(result, index)"></el-select>
</td>
<td>
<el-select placeholder="Select" v-model="row.visit" allow-create="allow-create" filterable="filterable">
<el-option v-for="i in 10" :key="i" :label="i" :value="i"></el-option>
</el-select>
</td>
<td>
<el-select placeholder="Select" v-model="row.amount" allow-create="allow-create" filterable="filterable">
<el-option v-for="i in 30" :key="i" :label="i" :value="i"></el-option>
</el-select>
</td>
<td>{{ row.service | after_line }}</td>
<td>
<el-input v-model="row.discount"></el-input>
</td>
<td><span v-if="row.service && row.amount">{{ ($options.filters.after_line(row.service) * row.amount - (($options.filters.after_line(row.service) * row.amount) / 100) * row.discount).toFixed(2) }}</span><span v-else-if="row.service">{{ ($options.filters.after_line(row.service) - ($options.filters.after_line(row.service) / 100) * row.discount).toFixed(2) }}</span>
<el-button v-if="row.service" icon="el-icon-delete" size="mini" @click="deleteRow(index)" class="push-right"></el-button>
</td>
</tr>
</tbody>
</table><br/>
<table>
<tr>
<td>Total price</td>
<td>{{ total_price }}</td>
</tr>
<tr>
<td>Total discount</td>
<td>{{ total_discount }}</td>
</tr>
<tr>
<td>Total full price</td>
<td>{{ total_full_price }}</td>
</tr>
</table>
</template>
</div>
这里也更新了小提琴,更改时总价仍然为空https://jsfiddle.net/zgykgery/21/