Edit row item in a table at button click in a modal dialog using ReactJS

simple-form.js

class EditModal extends Component {
.
.
.
  render() {
    return (
          <input className="ToDoInput" value={this.state.task} onChange={this.handleEditingTask} />
          <button onClick={(e)=>this.modifyTask(e)} className="ToDoSubmit"> Edit </button>
    );
  }
}