defining states in a function in reactjs code example

Example 1: reading state react

import React, { useState } from 'react';

function Example() {
  // Declare a new state variable, which we'll call "count"
  const [count, setCount] = useState(0);

  return (
    

      
You clicked {count} times
       setCount(count + 1)}>
        Click me
      
    
  );
}

Example 2: props and state react

function tick() {
  const element = (
    

      
Hello, world!
      
It is {new Date().toLocaleTimeString()}.
    
  );
  ReactDOM.render(    element,    document.getElementById('root')  );}

setInterval(tick, 1000);