State on React class Component
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>
);
}
}update state in react
You have to use setState() for updating state in React
{
hasBeenClicked: false,
currentTheme: 'blue',
}
setState({
hasBeenClicked: true
});reactjs update state example
You have to use setState() for updating state in React
{
hasBeenClicked: false,
currentTheme: 'blue',
}
setState({
hasBeenClicked: true
});how to update state react js
class Car extends React.Component {
constructor(props) {
super(props);
this.state = {
brand: "Ford",
model: "Mustang",
color: "red",
year: 1964
};
}
changeColor = () => {
this.setState({color: "blue"});
}
render() {
return (
<div>
<h1>My {this.state.brand}</h1>
<p>
It is a {this.state.color}
{this.state.model}
from {this.state.year}.
</p>
<button
type="button"
onClick={this.changeColor}
>Change color</button>
</div>
);
}
}Copyright © 2021 Codeinu
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