only class components can have life cycle methods code example
Example 1: setstate react js
constructor(props) {
super(props);
this.state = {
isActive: true,
};
}
checkStatus = () => {
this.setState({
'isActive' : !this.state.isActive,
});
}
Example 2: lifecycle methods react
Every component in React goes through a lifecycle of events. I like to think of them as going through a cycle of birth, growth, and death.
Mounting – Birth of your component
Update – Growth of your component
Unmount – Death of your component