累计时长计算方法

1.安装依赖

npm install moment --save 

2据需求我这里放在html中根据拿到的时间调用时间方法

{this.showTime(scope.row.statusTime)}

3.引入

  import moment from "moment";
    data(){
        return{
         nowDate: moment(),
        }
    }
    
    //4.进入页面就调用一次,设置异步回调setInterval,每隔一秒调用一次
    mounted () {
    setInterval(() => {
      this.nowDate = moment();
    }, 1000);
  },

//5.方法
 showTime (date) {
      if (date == null) {
        return "";
      }
      let nowTime = this.nowDate; //当下时间
      let setTime = moment(date);
      let times = moment.duration(nowTime - setTime, "ms"); //做差
      let days = times.get("days");
      let hours = times.get("hours");
      let mins = times.get("minutes");
      let ss = times.get("seconds");
      return `${days}天${hours}小时${mins}分${ss}秒`;
    },