update state in react class component code example
Example 1: state with react functions
import React, { useState } from 'react';
function Example() {
const [count, setCount] = useState(0);
return (
<div>
<p>You clicked {count} times</p>
<button onClick={() => setCount(count + 1)}>
Click me
</button>
</div>
);
}
Example 2: update state in react
You have to use setState() for updating state in React
{
hasBeenClicked: false,
currentTheme: 'blue',
}
setState({
hasBeenClicked: true
});
Example 3: component did mmount
componentDidMount()
Example 4: how to update state in react
this.setState(function(state, props) {
return {
counter: state.counter + props.increment
};
});