// 计算时间区间, 如有返回开始时间和结束时间,则计算区间,
// 如结束时间为空,则结束时间为当前时间,来算取已用时
    getTime(startDate,endDate) {
      var end;
      if (endDate!='') {
        end = new Date(endDate.replace(/-/g, "/"));
      }else{
        end = new Date(this.parseTime(new Date()).replace(/-/g, "/"));
      }
      var start = new Date(startDate.replace(/-/g, "/"));
      return this.diffTime(start, end);
    },
    diffTime(startDate, endDate) {
      var diff = endDate.getTime() - startDate.getTime(); //时间差的毫秒数
      //计算出相差天数
      var days = Math.floor(diff / (24 * 3600 * 1000));
      //计算出小时数
      var leave1 = diff % (24 * 3600 * 1000); //计算天数后剩余的毫秒数
      var hours = Math.floor(leave1 / (3600 * 1000));
      //计算相差分钟数
      var leave2 = leave1 % (3600 * 1000); //计算小时数后剩余的毫秒数
      var minutes = Math.floor(leave2 / (60 * 1000));
      //计算相差秒数
      var leave3 = leave2 % (60 * 1000); //计算分钟数后剩余的毫秒数
      var seconds = Math.round(leave3 / 1000);
      var returnStr = seconds + "秒";
      if (minutes > 0) {
        returnStr = minutes + "分钟" + returnStr;
      }
      if (hours > 0) {
        returnStr = hours + "小时" + returnStr;
      }
      if (days > 0) {
        returnStr = days + "天" + returnStr;
      }
      return returnStr;
    },