从组件react中的另一个类获取对象

// 父组件
import React from 'react';
import ChildComponent from './ChildComponent';

class ParentComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      myObject: { name: 'John', age: 25 },
    };
  }

  render() {
    return <ChildComponent myObject={this.state.myObject} />;
  }
}

// 子组件
import React from 'react';

class ChildComponent extends React.Component {
  render() {
    const { myObject } = this.props;
    // 使用myObject对象进行操作
    return <div>{myObject.name}</div>;
  }
}

// 父组件
import React from 'react';
const MyObjectContext = React.createContext();

class ParentComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      myObject: { name: 'John', age: 25 },
    };
  }

  render() {
    return (
      <MyObjectContext.Provider value={this.state.myObject}>
        <ChildComponent />
      </MyObjectContext.Provider>
    );
  }
}

// 子组件
import React from 'react';

class ChildComponent extends React.Component {
  render() {
    return (
      <MyObjectContext.Consumer>
        {(myObject) => (
          // 使用myObject对象进行操作
          <div>{myObject.name}</div>
        )}
      </MyObjectContext.Consumer>
    );
  }
}