state creation and updation in class components reactjs interview questions
class Car extends React.Component {
constructor(props) {
super(props);
this.state = {
brand: "BMW",
color: "Black"
};
}
changeColor() {
this.setState(prevState => {
return { color: "Red" };
});
}
render() {
return (
<div>
<button onClick={() => this.changeColor()}>Change Color</button>
<p>{this.state.color}</p>
</div>
);
}
}state creation in class components reactjs interview questions
class Car extends React.Component{
constructor(props){
super(props);
this.state = {
brand: "BMW",
color: "black"
}
}
}Copyright © 2021 Codeinu
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