usestate 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 useEffect
import React, { useEffect } from 'react';
export const App: React.FC = () => {
useEffect(() => {
}, [/*Here can enter some value to call again the content inside useEffect*/])
return (
<div>Use Effect!</div>
);
}usestate in react
const [x, setx] = useState(0);React useState hook
1: import React, { useState } from 'react'; 2:
3: function Example() {
4: const [count, setCount] = useState(0); 5:
6: return (
7: <div>
8: <p>You clicked {count} times</p>
9: <button onClick={() => setCount(count + 1)}>10: Click me
11: </button>
12: </div>
13: );
14: }usestate in react
The initial value will be assigned only on the initial render (if it’s a function, it will be executed only on the initial render).Copyright © 2021 Codeinu
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