为什么输入的ngbDatepicker会将数字转换为日期？

Answer 1

解决方案：防止 NgbDateParserFormatter 中的输入值条件（value.lenght <= 7, in my case).

@Injectable()
export class DateInputFormatter extends NgbDateParserFormatter {
  public parse(value: string): NgbDateStruct | null {
    if (!value || value.length <= 7) return null;

    const date = dayjs(value);

    return {
      year: date.year(),
      month: date.month(),
      day: date.day(),
    };
  }
}