React Hook - useState

use-state.tsx

import React, { useState } from 'react';
 
function Example() {
  const [count, setCount] = useState(0);
  // count is state variable
  // setCount is method to update the count.
  // 0 is the default value of count
 
  return (
    <button onClick={() => setCount(count + 1)}> Click me </button>
  );
}