antd 给select下拉框添加懒加载

给select下拉框添加属性

dropdownRender={menu => (

                                <div>

                                  {menu}

                                  <div

                                    className="selectScroll"

                                    style={{ textAlign: 'center' }}

                                    onMouseDown={e => e.preventDefault()}

                                  >

                                    {

                                      selectLoading && // 加载状态

                                        <Spin size="small" style={{ padding: '8px' }} />

                                    }

                                  </div>

                                </div>

                              )}

onPopupScroll={this.companyScroll }

companyScroll = (e) => {

    const { clientHeight, scrollHeight, scrollTop } = e.target;

    const { pageTotal, selectLoading } = this.state;

    if ((clientHeight + scrollTop === scrollHeight) && !selectLoading) {

      this.setState({

        selectCurPage: this.state.selectCurPage + 1,

      }, () => {

        if (Math.ceil(pageTotal / 15) >= this.state.selectCurPage) {

          // 获取数据的接口

        }

      });

    }

  }