how to write statefull class in react
import React, {Component} from 'react'
class Pigeons extends Component {
constructor() {
super()
this.state = {
pigeons: []
}
}
render() {
return (
<div>
<p>Look at all the pigeons spotted today!</p>
<ul>
{this.state.pigeons.map(pigeonURL => {
return <li><img src={pigeonURL} /></li>
})}
</ul>
</div>
)
}
}how to create state in class component
const [state, setState] = useState('intialValue')class component react using state
import React, {Component} from 'react';
import './App.css';
import IconBar from './components/icon-bar';
import Events from './components/events';
class App() extends Component {
constructor(props) {
super(props)
this.state = {
mode: null
}
this.updateMode = this.updateMode.bind(this);
}
updateMode = (newMode) => {
this.setState({mode: newMode});
}
return (
<div className="App">
<h1 className="Title">ENAKS</h1>
<IconBar onUpdateMode={this.updateMode} mode={this.state.mode} />
<Events />
<div className="mainModeFrame"><p1>{this.state.mode}</p1></div>
</div>
);
}
export default App;
Add this to your knowledgestate with react functions
class Example extends React.Component {
constructor(props) {
super(props);
this.state = {
count: 0
};
}
render() {
return (
<div>
<p>You clicked {this.state.count} times</p>
<button onClick={() => this.setState({ count: this.state.count + 1 })}>
Click me
</button>
</div>
);
}
}react change state
// React change state
this.setState({state to change:value});state in react
class BalanceInquiry extends Component {
constructor(props) {
super(props);
this.state = {
totalIncome: 0,
};
}
render() {
return <div>totalIncome {this.state.totalIncome}</div>;
}
}Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
