How show hide field in form based on dropdown selection With reactjs?

Hi I’m new with reactJs and I want to show a field after choosing one option of the dropdown list.
Actually I have a dropdown list contain “floor_no” values I want that when I choose “Ground Floor” to hide the field that contain the “stair Length” and when I choose the other options the field of “stair length” displayed.
this is my view code :

<Row>
          <Col sm='12' className='mb-1'>

            <Label className='form-label' for='name'>
              Floor Number <span className='text-danger'>*</span>
            </Label>
            <select id='floor_no' className='form-control' onChange={(e) => setFloorno(e.target.value)}>
             <option value='Ground Floor'> Ground Floor </option>
              <option value='Tirst floor'> First Floor </option>
              <option value='Second Floor'> Second Floor </option>
              <option value='Third Floor'> Third Floor </option>
              <option value='Fourth Floor'> Fourth Floor </option>
              <option value='Fifth Floor'> Fifth Floor </option>


            </select>
            <small className='text-danger'>{errorList.floor_no}</small>
            <br />
          </Col>

        </Row>
        
        <Row>
          <Col sm='12' className='mb-1'>
        


            <Label className='form-label' for='long_escalier'>
              Stair Length <span className='text-danger'>*</span>
            </Label>
            <input type='text' className="form-control"
              onChange={(e) =>
                setLongEscalier(e.target.value)
              }
              placeholder="Stair length" />
            <small className='text-danger'>{errorList.long_escalier}</small>
            <br/>
          </Col>
        </Row>
            
        

this is how I declared variables:

const [errorList, setError] = useState([]);
  const [floor_no, setFloorno] = useState("");
  const [long_escalier, setLongEscalier] = useState("");
  const [dispo_ascenseur, setAscenseur] = useState("");

thanks in advance