import React, { useState } from 'react';
function Checkbox() {
const [check, setcheck] = useState(0);
const handelCheck = (e) => {
if (e.target.checked) { setcheck(check + 1) }
else { setcheck(check - 1) }
}
return (
<div>
<ul>
<li> <input onChange={handelCheck} type="checkbox" /> checkbox 1</li>
<li> <input onChange={handelCheck} type="checkbox" /> checkbox 2</li>
<li> <input onChange={handelCheck} type="checkbox" /> checkbox 3</li>
<li> <input onChange={handelCheck} type="checkbox" /> checkbox 4</li>
</ul>
<h2> {check} checkbox selected</h2>
</div>
)
}
export default Checkbox
