baazjs/src/components/Form.js

import React, { Component } from "react";

class Form extends Component {
  constructor() {
    super();

    this.state = {
      value: ""
    };

    this.handleChange = this.handleChange.bind(this);
  }

  handleChange(event) {
    const { value } = event.target;
    this.setState(() => {
      return {
        value
      };
    });
  }

  render() {
    return (
      <form>
        <div class="alert alert-primary" role="alert">
          This is a primary alert—check it out!
</div>
        <input
          type="text"
          value={this.state.value}
          onChange={this.handleChange}
        />
      </form>
    );
  }
}

export default Form;