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import React from 'react';
function Header () {
const [headerData, setHeaderData] = React.useState(0);
console.log('Header headerData : ', headerData);
function headerDataChange () {
for (let i = 0; i < 10; i++) {
setHeaderData(headerData + 1);
}
console.log('function headerDataChange headerData : ', headerData);
}
return (
<div>
헤더입니다.
<button onClick={headerDataChange}>+1</button>
</div>
)
}
export default Header;