Need help with Use Provider to Connect Redux to React

JavaScript
1

Tell us what’s happening:
I’m not sure what I am doing wrong. The console is telling me there is some sort of syntactical error. I’ve checked my answer against a number of other help posts, and we all seem to come up with the same code. At the bottom of the page, the problem is with the way I have added the Provider.

What to do?

Your code so far


// Redux Code:
const ADD = 'ADD';

const addMessage = (message) => {
  return {
    type: ADD,
    message
  }
};

const messageReducer = (state = [], action) => {
  switch (action.type) {
    case ADD:
      return [
        ...state,
        action.message
      ];
    default:
      return state;
  }
};



const store = Redux.createStore(messageReducer);

// React Code:

class DisplayMessages extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      input: '',
      messages: []
    }
    this.handleChange = this.handleChange.bind(this);
    this.submitMessage = this.submitMessage.bind(this);
  }
  handleChange(event) {
    this.setState({
      input: event.target.value
    });
  }
  submitMessage() {
    const currentMessage = this.state.input;
    this.setState({
      input: '',
      messages: this.state.messages.concat(currentMessage)
    });
  }
  render() {
    return (
      <div>
        <h2>Type in a new Message:</h2>
        <input
          value={this.state.input}
          onChange={this.handleChange}/><br/>
        <button onClick={this.submitMessage}>Submit</button>
        <ul>
          {this.state.messages.map( (message, idx) => {
              return (
                 <li key={idx}>{message}</li>
              )
            })
          }
        </ul>
      </div>
    );
  }
};

const Provider = ReactRedux.Provider;

class AppWrapper extends React.Component {
  // render the Provider here
  return(
    <Provider store={store}>
      <DisplayMessages />
    </Provider>
    )
  // change code above this line
};

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36.

Link to the challenge:

2

You forget the constructor statement.

constructor(props) {
    super(props);
  }
3

Thanks @yoelvis, but it still doesn’t work with a constructor statement. The bit of code I’m having trouble with is Redux code, not React.

4

I think the component without constructor is not complete. Also I just saw. You forgot the render() function.

5

It was the render function I was missing. Stupid mistake. Thanks @yoelvis.

6

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