Hooks in react js ( useState hooks )

import React, {useState} from "react";

let UseState = () => {
    let intialData = 10;
    const [myNum, setMyNum] = useState(intialData);

    return (
        <>
           <center>
            <h1>{myNum}</h1>
            <button onClick={() => setMyNum(myNum + 1)}>Increase +</button> &nbsp; &nbsp; 
            <button onClick={() => myNum > 0 ? setMyNum(myNum - 1) : setMyNum(0)}>Decrease -</button>
           </center>
        </>
    )
}

export default UseState;