child.js

import React, { Component } from 'react'

export default class NodeSchemaInput extends Component {

  handleChange = () => {
    
  }

  render() {
    return <div>
      <h1>Node Schema</h1>
      <textarea
        rows='10'
        cols='100'
        name='nodeSchema'
        onChange={this.props.handleChange}/>
    </div>
  }
}