两个日期之间的vuejs样式绑定

Question

我想在与vue js约会两次后给文本颜色，但我找不到解决方案。示例:我想将StartDateToday和End Date05.10.2021相应地设置为红色。但是我想用v-bind来做这个条件，这可能吗?

<tr v-for="(item, i) in attributes" :class="today ? 'greater' : 'today'">
<td>{{ today ,item.due_date | remainingday}}</td>
</tr>
export default {
data() {
return {
type: 'sales_invoices',
attributes: [],
start: new Date().toLocaleDateString,
}
},
async created() {
const res = await this.callApi('get', this.type)
if (res.status === 200) {
this.attributes = res.data.data
}
},
computed: {
today(){
const startY = new Date(this.start.split(".").reverse().join("."))
const end = new Date('05.10.2021'.split(".").reverse().join("."))
const difDays = Math.floor((startY.getTime() - end.getTime()) / (1000 * 3600 * 24))
return difDays > 0
},
},

app.js

Vue.filter('remainingday', function (startDate, endDate) {
const start = new Date(startDate.split(".").reverse().join("."))
const end = new Date(endDate.split(".").reverse().join("."))
if(start.toDateString() === end.toDateString()) {
return 'TODAY'
} 
const difDays = Math.floor((start.getTime() - end.getTime()) / (1000 * 3600 * 24))
return difDays > 0 
? `PAYMENT DELAYED FOR ${difDays} DAYS `
: `${difDays * -1} DAYS LEFT`
});

Answer 1

您可以尝试使用类绑定和方法:

new Vue({
el: '#demo',
data(){
return {
start: new Date(),
attributes: [{due_date: '30.10.2021'}, {due_date: '07.10.2021'}, {due_date: '03.10.2021'}]
}
},
methods: {
remainingday (startDate, endDate) {
const dates = startDate.toLocaleDateString() + ' ' + endDate
const start = new Date(startDate)
const end = new Date(endDate.split(".").reverse().join("-"))
if(start.toDateString() === end.toDateString()) return {dat: `${dates} - TODAY`, cl: 'today'}
const difDays = Math.ceil((start.getTime() - end.getTime()) / (1000 * 3600 * 24))
return difDays > 0 
? {dat: `${dates} - PAYMENT DELAYED FOR ${difDays} DAYS`, cl: 'greater'}
: {dat: `${dates} - ${difDays * -1} DAYS LEFT`, cl: ''}
}
}
})
Vue.config.productionTip = false
Vue.config.devtools = false

.today {
color: blue; 
}
.greater {
color: red; 
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="demo">
<table>
<tr v-for="(item, i) in attributes" :key="i">
<td :class="remainingday(start, item.due_date).cl">{{ remainingday(start, item.due_date).dat }}</td>
</tr>
</table>
</div>