React and Redux - Manage State Locally First

JavaScript
1

Tell us what’s happening:

why is my code not working?

Your code so far

class DisplayMessages extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      input: "",
      messages: []
    }
  }
  // Add handleChange() and submitMessage() methods here
this.handleChange=this.handleChange.bind(this);
this.submitMessage=this.submitMessage.bind(this);
handleChange(event){this.setState({input:event.target.value, messages:this.state.messages})}
submitMessage(){this.setState({input:"", messages:[...this.state.messages, this.state.input]})}
  render() {
    return (
      <div>
        <h2>Type in a new Message:</h2>
        { /* Render an input, button, and ul below this line */ }
<input onChange= {this.handleChange} value={this.state.input}></input>
<button onClick={this.submitMessage}>Submit</button>
<ul>{this.state.messages.map((item)=> <li key={item}>{item}</li>)}</ul>
        { /* Change code above this line */ }
      </div>
    );
  }
};

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Challenge Information:

React and Redux - Manage State Locally First

2 
class DisplayMessages extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      input: "",
      messages: []
    }
 ........   put them here......
}

you need to define the handleChange and submitMessage methods inside the class

3

It worked ! Thank you so much!

1 Like
4

#Bug in this code#
while setting the state in handleChange(). spread this.state.messages in the messages property as an array

5

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