I'm trying to build a basic chat room app, and I'm having trouble understanding why my app component doesn't render. I expect this is probably a really basic issue, but I'm new to coding (and Stack Overflow) in general so it's escaping me.
I've got the component set up similarly to one I already built that worked fine, but when I try to run, I get an error saying that a semicolon is expected in place of the curly brace right after I call the render method.
I found another answer saying that this usually indicates invalid JSX syntax within the component, but I've rearranged it every way I can think of. I tried just putting the semicolon there as a Hail Mary, but that predictably just caused more errors.
import React, {Component} from 'react';
import RoomList from './components/RoomList'
import MessageList from './components/MessageList'
import './App.css';
import * as firebase from 'firebase';
// <script src="https://www.gstatic.com/firebasejs/6.1.1/firebase-app.js"></script>
// Your web app's Firebase configuration
var firebaseConfig = {
apiKey: "AIzaSyA9oZW7yL_BgNtkODEkOftd8SztNDm6aLw",
authDomain: "bloc-chat-e5e85.firebaseapp.com",
databaseURL: "https://bloc-chat-e5e85.firebaseio.com",
projectId: "bloc-chat-e5e85",
storageBucket: "bloc-chat-e5e85.appspot.com",
messagingSenderId: "716557708964",
appId: "1:716557708964:web:69e9e607313399b0"
};
// Initialize Firebase
firebase.initializeApp(firebaseConfig);
class App extends Component {
constructor(props) {
super(props);
this.state = {
activeRoom: null
}
render() {
return (
<div className="App">
<header className="App-header">
<RoomList firebase={firebase}>
</RoomList>
</header>
</div>
);
}
}
export default App;
This should display a list of available chat rooms and an input field for adding more, but the error message is as follows:
Line 32: Parsing error: Unexpected token, expected ";"
30 | }
31 |
> 32 | render() {
| ^
You forgot the }
of constructor
class App extends Component {
constructor(props) {
super(props);
this.state = {
activeRoom: null
}
}
render() {
return (
<div className="App">
<header className="App-header">
<RoomList firebase={firebase}>
</RoomList>
</header>
</div>
);
}
}
export default App;
我认为您缺少用于关闭构造函数的右花括号。
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