vant日历(van-calendar)设置年月日

formatDate(date) {
        return `${date.getFullYear()}-${date.getMonth() + 1}-${date.getDate()}`;
      },
      onConfirmStart(date) {
        this.showDateStart = false;
        this.startDate = this.formatDate(date);
      },

获取年注意是${date.getFullYear()} ，不是getYear