从React 14升级到React 16时react-modal引发错误

时间:2018-10-16 22:55:38

标签: javascript reactjs react-modal

React-modal在React 14中对我们非常有用。

我们已升级到React 16,并出现以下错误。

  

invariant.js:38未捕获的错误:Modal.render():有效的React元素   (或null)必须返回。您可能返回了未定义的数组   或其他无效对象

我们使用了GitHub上的确切示例代码,并重新安装了react-modal。有什么想法吗?

app.js:

import React from 'react';
import ReactDOM from 'react-dom';
import ExampleModal from './components/example_modal.js';

ReactDOM.render(

  <ExampleModal />
  , document.querySelector('#publish-hook'));

example_modal.js:

import React from 'react';
import { Component} from 'react'
import ReactModal from "react-modal";

export default class ExampleModal extends Component {
  constructor () {
    super();
    this.state = {
      showModal: true
    };

    this.handleOpenModal = this.handleOpenModal.bind(this);
    this.handleCloseModal = this.handleCloseModal.bind(this);
  }

  handleOpenModal () {
    this.setState({ showModal: true });
  }

  handleCloseModal () {
    this.setState({ showModal: false });
  }

  render () {
    return (
      <div>
        <button onClick={this.handleOpenModal}>Trigger Modal</button>

{
        <ReactModal 
           isOpen={this.state.showModal}
           contentLabel="Minimal Modal Example"
        >
          <button onClick={this.handleCloseModal}>Close Modal</button>
        </ReactModal>
       }

      </div>
    );
  }
}

const props = {};

//ReactDOM.render(<ExampleApp {...props} />, document.getElementById('main'))

0 个答案:

没有答案