Hi.
I’m trying to solve https://learn.freecodecamp.org/front-end-libraries/react-and-redux/manage-state-locally-first/ – and I don’t understand what’s wrong with my code. It appears to be working as intended, but most tests fail. I also get no errors. Any advice is greatly appreciated.
Code
class DisplayMessages extends React.Component {
constructor(props) {
super(props);
this.state = {
input: '',
messages: []
}
this.submitMessage = this.submitMessage.bind(this);
this.handleChange = this.handleChange.bind(this);
}
// add handleChange() and submitMessage() methods here
handleChange(ev) {
this.setState({
input: ev.currentTarget.value
});
}
submitMessage() {
this.setState({
messages: [...this.state.messages, this.state.input],
input: ''
});
}
render() {
return (
<div>
<h2>Type in a new Message:</h2>
{ /* render an input, button, and ul here */ }
<input value={this.state.input} onChange={this.handleChange} />
<button onClick={this.submitMessage}>Add message</button>
<ul>
{this.state.messages.map(m => <li>{m}</li>)}
</ul>
{ /* change code above this line */ }
</div>
);
}
};
Test output
- The input element should render the value of input in local state.
- Calling the method handleChange should update the input value in state to the current input.
- The submitMessage method should clear the current input.
- Clicking the Add message button should call the method submitMessage which should add the current input to the messages array in state.
Browser
I’m using Firefox 63.0b10 (64-bit) on Debian, I also tried Chromium 67.
