react use staet code example

Example 1: how to define state in react function

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: react lifecycle hooks

class ActivityItem extends React.Component {
  render() {
    const { activity } = this.props;

    return (
      

        

          
        

        
          {moment(activity.created_at).fromNow()}
        
        
        
{activity.actor.display_login} {activity.payload.action}
        

          {activity.repo.name}
        
      
    )
  }
}