what is a react hook
function ExampleWithManyStates() {
// Declare multiple state variables!
const [age, setAge] = useState(42);
const [fruit, setFruit] = useState('banana');
const [todos, setTodos] = useState([{ text: 'Learn Hooks' }]);
// ...
}what is a react hook
import React, { useState } from 'react';
function Example() {
// Declare a new state variable, which we'll call "count" const [count, setCount] = useState(0);
return (
<div>
<p>You clicked {count} times</p>
<button onClick={() => setCount(count + 1)}>
Click me
</button>
</div>
);
}react hooks
componentDidUpdate(prevProps, prevState) {
if (prevState.count !== this.state.count) {
document.title = `You clicked ${this.state.count} times`;
}
}Copyright © 2021 Codeinu
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