&nbsp;아래 내용은 qnaMessage를 for문 돌면서&nbsp;화면을 그리는데Button 이벤트가 작동하시 않았다.&nbsp;onClick앞에 () =&gt; 이렇게 해주니까 되더라.&nbsp;&nbsp;이해를 해야 하는데 ㅠㅠ&nbsp;<pre style="background-color:#2b2b2b;color:#a9b7c6;font-family:'JetBrains Mono',monospace;font-size:9.8pt;">&lt;Grid item xs={12} sx={{alignItems: 'center', p: 1}}&gt; {qnaMessages.map(qna =&gt; ( &lt;Box key={qna.id} sx={{width: '100%', mb: 3}}&gt; &lt;Typography variant="h4" gutterBottom component="div"&gt; {qna.message} &lt;Button variant="contained" onClick={() =&gt; answerQna(qna)}&gt;답변&lt;/Button&gt; &lt;/Typography&gt; &lt;Box sx={{fontSize:'10px'}}&gt;{qna.questionerId} - {moment(qna.createTime).format("YYYY-MM-DD HH:mm:ss")}&lt;/Box&gt; &lt;/Box&gt; ))} &lt;/Grid&gt;</pre>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

react for문 안에서 button 이벤트 발생시키기 for loop maps