//rich-text主要用来将展示html格式的，可以直接使用这个标签
<view class="ptBox" v-for="(item,index) in orderList" :key="index">   <rich-text :nodes="item.limit_time|limitTimeFilter"></rich-text>  
</view>

引入工具方法

import {formateTimeStamp} from '@/utils/index.js'

filters: {// 拼团有效期的filterlimitTimeFilter (val){if (val > 0) {let formateLimitTimes = formateTimeStamp(val);let txt = `<div style="display:inline-block;padding:0 2px; color:#ffffff; height:43rpx; line-height: 43rpx; background-color: #F32B2B;border-radius: 4rpx ;">${formateLimitTimes.hour}</div><div style="display:inline-block;color:#F32B2B; margin:0 5rpx;">:</div><div style="display:inline-block;padding:0 2px; color:#ffffff; height:43rpx; line-height: 43rpx; background-color: #F32B2B;border-radius: 4rpx ;">${formateLimitTimes.min}</div><div style="display:inline-block;color:#F32B2B; margin:0 5rpx;">:</div><div style="display:inline-block;padding:0 2px; color:#ffffff; height:43rpx; line-height: 43rpx; background-color: #F32B2B;border-radius: 4rpx ;">${formateLimitTimes.seconds}</div>`;return txt;} else {const twtxt = `0 时 0 分 0 秒`return twtxt;}} 
}, 

async findPinTuanOrderVos(){try{ let res=await findPinTuanOrderVos(); //数组返回的restHour：剩余小时//restMinute :剩余分钟//restSecond :剩余秒this.orderList=res.map((vs)=>{ //更新数组return { //将返回的时分秒，计算成时间戳
...vs,limit_time:Number(vs.restHour*3600)+Number(vs.restMinute*60)+Number(vs.restSecond) }})this.ticker = setInterval(() => { //执行循环for(let i=0;i<res.length;i++){  //每循环一次将时间戳减一this.orderList[i].limit_time=this.orderList[i].limit_time - 1} },1000)}catch(v){} 
},

工具类封装

//utils/index.js// 计算出时间戳的具体数据：比如将85400转化为 n时n分n秒
export function formateTimeStamp (timeStamp) {var hour;var min;var seconds;hour = parseInt(timeStamp / (60 * 60)) // 计算整数小时数var afterHour = timeStamp - hour * 60 * 60 // 取得算出小时数后剩余的秒数min = parseInt(afterHour / 60) // 计算整数分seconds = parseInt(timeStamp - hour * 60 * 60 - min * 60) // 取得算出分后剩余的秒数if (hour < 10) {hour = '0' + hour}if (min < 10) {min = '0' + min;}if (seconds < 10) {seconds = '0' + seconds;}const restTime = {hour: hour,min: min,seconds: seconds}return restTime
}