在不卸载/重置的情况下更改react组件dom父组件

import React from 'react';

const ParentContext = React.createContext();

class ChildComponent extends React.Component {
  render() {
    return (
      <ParentContext.Consumer>
        {parent => (
          <div>
            {/* ChildComponent的内容 */}
          </div>
        )}
      </ParentContext.Consumer>
    );
  }
}

import React from 'react';

const ParentContext = React.createContext();

class ParentComponent extends React.Component {
  render() {
    return (
      <ParentContext.Provider value={this}>
        <div>
          {/* ParentComponent的内容 */}
          <ChildComponent />
        </div>
      </ParentContext.Provider>
    );
  }
}