Error in changing the value state of input box

Question

My input box is not editable when I try to edit the value in it.

I am not sure if my onChange event is being used properly to change the value of the input.

import React from "react";

import * as TodoActions from "../actions/TodoActions";
import TodoStore from "../stores/TodoStore";

export default class Todo extends React.Component {
  constructor(props) {
    super();
  }

  deleteTodo() {
    TodoActions.deleteTodo(this.props.id);
  }

  toggleEdit() {
    TodoActions.toggleEdit(this.props.id);
  }

  updateTodo() {
    TodoActions.updateTodo(this.props.text);
  }

  toggleComplete() {
    TodoActions.toggleComplete(this.props.id);
  }

  onChange(e) {
    console.log('e.taget.value: '+ e.target.value);
    this.setState({
      value: e.target.value
    });
    console.log(value);

  }

  render() {
    const buttonStyle = { margin: "5px" };

    const { complete, edit, text, id } = this.props;

    const icon = complete ? "\u2714" : "\u2716"

    if (edit) {
      return (
        <li>
          <form onSubmit={this.updateTodo.bind(this)}>
            <input onChange={this.onChange.bind(this)} value={text} focus="focused"/>
            <button onClick={this.toggleEdit.bind(this)} class="btn btn-default btn-sm" style={buttonStyle}>Cancel</button>
            <button onClick={this.updateTodo.bind(this)} class="btn btn-success btn-sm" style={buttonStyle}>Update</button>
          </form>
        </li>
      );
    }

    return (
      <li>
        <span>{text}</span>
        <span onClick={this.toggleComplete.bind(this)} class="btn btn-default btn-xs" style={buttonStyle}>{icon}</span>
        <button onClick={this.toggleEdit.bind(this)} class="btn btn-primary btn-sm" style={buttonStyle}>Edit</button>
        <button onClick={this.deleteTodo.bind(this)} class="btn btn-danger btn-sm" style={buttonStyle}>Delete</button>
      </li>
    );
  }
}

Answer 1

Your <input/> should be a controlled component as your are using value prop.

Try this

 <input onChange={this.onChange.bind(this)} value={this.state.value || text} focus="focused"/>

And add an empty state to your constructor

constructor(props) {
    super();
    this.state = {}
}