Javascript ichard1583如果您能更改API，那将是非常好的…在您的帮助下，它（在我的计算机上使用我的API）工作得非常完美…我在这里发布了它的工作原理。我以前从未使用过API星球大战，下次创建沙盒时，我将尝试理解它以正确使用它。再次感谢您的帮助！如果这有帮助，

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ichard1583如果您能更改API，那将是非常好的…在您的帮助下，它（在我的计算机上使用我的API）工作得非常完美…我在这里发布了它的工作原理。我以前从未使用过API星球大战，下次创建沙盒时，我将尝试理解它以正确使用它。再次感谢您的帮助！如果这有帮助，那么你应该将我的答案标记为已接受。。。是否投票是你的艰难选择。。。谢谢

export class WizardMainForm extends Component {

  state = {
    error: null,
    step: 1,
    choiceOne: "",
    choiceTwo: "",
    objectsListOptionsForStep2: []
  };

  componentDidMount() {
    this.handleUserDetails();
  }

  handleUserDetails = () => {
     some code here
  };

  
  // Proceed to the next step
  nextStep = () => {
    const { step } = this.state;
    this.setState({
      step: step + 1,
    });
  };

  // Go back to previous step
  prevStep = () => {
    const { step } = this.state;
    this.setState({
      step: step - 1,
    });
  };

  //Handle fields change
  handleChange = (input) => (e) => {
    this.setState({ [input]: e.target.value });
    if (this.state.step == 1){
      const valueSelectedAtStepOne = e.target.value
      authAxios
      .get(`myUrl/?q=${valueSelectedAtStepOne}`)
      .then((res) => {
        this.setState({
          objectsListOptionsForStep2: res.data,
        });
        console.log(res.data);
      })
      .catch((err) => {
        this.setState({
          error: err.response.data.message,
        });
      });
    }
  };


  render() {
    const { step, choiceOne, objectsListOptionsForStep2 } = this.state;
    
    const values = {choiceOne, choiceTwo};
    
    switch (step) {
      case 1:
        return (
          <FormChoiceOne
            nextStep={this.nextStep}
            values={values}
            handleUserDetails={this.handleUserDetails}
            handleChange={this.handleChange}
          />
        );
      case 2:
        return (
          <FormChoiceTwo
            nextStep={this.nextStep}
            prevStep={this.prevStep}
            values={values}
            handleUserDetails={this.handleUserDetails} 
            handleChange={this.handleChange}
          />
        );
    }
  }
}

export default WizardMainForm;

    export class FormChoiceOne extends Component {
      
        continue = (e) => {
        e.preventDefault();
        this.props.nextStep();
      };
    
      render() {
       return (
        <div>
         <Form>
            <select
              onChange={handleChange("choiceOne")}
              defaultValue={values.choiceOne}
            >
              <option>1</option>
              <option>2</option>
              <option>3</option>
            </select>
            <Button onClick={this.continue}> Next step </Button>
         </Form>
        </div>
    );
  }
}

export default FormChoiceOne;

export class FormChoiceTwo extends Component {

continue = (e) => {
    e.preventDefault();
    this.props.nextStep();
  };

  back = (e) => {
    e.preventDefault();
    this.props.prevStep();
  };

render() {
    
some code

    return (
      <div>
       <Form>
        <select>
          {this.objectsListOptionsForStep2.map((u) => (
            <option>{u.id}</option>
          ))}
         </select>
            <Button onClick={this.back}> Previous step </Button>
            <Button onClick={this.continue}> Next step </Button> 
       </Form>
      </div>
    );
  }
}


export default FormChoiceTwo;

{
(objectsListOptionsForStep2 === null || objectsListOptionsForStep2===undefined) ? 
    <option>Loading</option> : 
    this.objectsListOptionsForStep2.map((u) => (
            <option>{u.id}</option>
          ))
}

<FormChoiceTwo
  nextStep={this.nextStep}
  prevStep={this.prevStep}
  values={values}
  handleUserDetails={this.handleUserDetails} 
  handleChange={this.handleChange}
  objectsListOptionsForStep2={objectsListOptionsForStep2}
/>

<select>
  {this.props.objectsListOptionsForStep2.map((u) => (
    <option>{u.id}</option>
  ))}
</select>