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13 changes: 13 additions & 0 deletions react-foundations/app/like-button.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
'use client';

import { useState } from 'react';

export default function LikeButton() {
const [likes, setLikes] = useState(0);

function handleClick() {
setLikes(likes + 1);
}

return <button onClick={handleClick}>Like ({likes})</button>;
}
23 changes: 8 additions & 15 deletions react-foundations/app/page.js
Original file line number Diff line number Diff line change
@@ -1,18 +1,12 @@
import { useState } from 'react';

import LikeButton from './like-button';
function Header({ title }) {
return <h1>{title ? title : "Default title"}</h1>
return <h1>{title ? title : 'Default title'}</h1>;
}

export default function HomePage() {
const names = ["Ada Lovelace", "Grace Hopper", "Margaret Hamilton"]

const [likes, setLikes] = React.useState(0)

function handleClick() {
setLikes(likes + 1)
}

const names = ['Ada Lovelace', 'Grace Hopper', 'Margaret Hamilton'];

return (
<div>
<Header title="Develop. Preview. Ship." />
Expand All @@ -21,8 +15,7 @@ export default function HomePage() {
<li key={name}>{name}</li>
))}
</ul>

<button onClick={handleClick}>Like ({likes})</button>
<LikeButton />
</div>
)
);
}