计算开始时间和结束时间范围内，总计多少年多少月

/**时间的回调 */
  changeStartDate = (date: moment.Moment | null, dateString: string) => {
    const { lzEndDate } = this.state;
    this.setState({
      lzStartDate: dateString,
    }, () => {
      this.getMonths(dateString, lzEndDate);
      this.getYears(dateString, lzEndDate);
    });
  }
  /**时间的回调 */
  changeEndDate = (date: moment.Moment | null, dateString: string) => {
    const { lzStartDate } = this.state;
    this.setState({
      lzEndDate: dateString,
    }, () => {
      this.getMonths(lzStartDate, dateString);
      this.getYears(lzStartDate, dateString);
    });
  }

  /** 获取总计月 */
  getMonths = (startTime: string, endTime: string) => {
    let dateArray = [];
    let currentDate = moment(startTime);
    let stopDate = moment(endTime);
    // 开始日期小于等于结束日期,并循环
    while (currentDate <= stopDate) {
      dateArray.push(moment(currentDate).format('YYYY-MM'))
      currentDate = moment(currentDate).add(1, 'months');
    }
    this.props.form.setFieldsValue({
      lzqxzjy: (dateArray.length - 1) % 12,
    });
    return dateArray;
  }
  /** 获取总计年 */
  getYears = (startTime: string, endTime: string) => {
    let dateArray = [];
    let currentDate = moment(startTime);
    let stopDate = moment(endTime);
    // 开始日期小于等于结束日期,并循环
    while (currentDate <= stopDate) {
      dateArray.push(moment(currentDate).format('YYYY'))
      currentDate = moment(currentDate).add(1, 'year');
    }
    this.props.form.setFieldsValue({
      cznx: dateArray.length - 1,
    });
    return dateArray;
  }


render() {
....
            *开始日期
            
              {getFieldDecorator("lzqxksrq", {
                initialValue: defaultValue && defaultValue.lzqxksrq ? moment(defaultValue?.lzqxksrq as string) : null,
                validateTrigger: "onSubmit",
                rules: [
                  {
                    required: true,
                    message: "开始日期必须选择！",
                  },
                ],
              })()}
            
          
            *结束日期
            
              {getFieldDecorator("lzqxjsrq", {
                initialValue: (defaultValue && defaultValue.lzqxjsrq ? moment(defaultValue?.lzqxjsrq as string) : null),
                validateTrigger: "onSubmit",
                rules: [
                  {
                    required: true,
                    message: "结束日期必须选择",
                  },
                ],
              })( {
                  if (!date) return false;
                  if (+date.format("YYYYMMDD") <= +moment(getFieldValue("lzqxksrq")).format("YYYYMMDD")) {
                    return true;
                  }
                  return false;
                }}
                placeholder="请选择"
                onChange={this.changeEndDate}
              />)}
            
         

}