<p>안녕하세요 선생님</p>
<p>강의랑 조금 다른 방식으로&nbsp;</p>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;"><span style="color: #4fc1ff;">btn</span>.<span style="color: #dcdcaa;">addEventListener</span>(<span style="color: #ce9178;">"click"</span>,&nbsp;<span style="color: #dcdcaa;">makeArray</span>);</div>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;">에서 table안에 tr, td 만드는 <span style="color: #dcdcaa;">makeArray</span>함수호출하고</div>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;">(참고로 tbody같은 html요소들은 makeArray밖의</div>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;">맨위에 이미 특정해놨어요)</div>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;">이 함수안에서</div>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;">
<div style="line-height: 19px;"><span style="color: #dcdcaa;">randomNumberForDigging</span>(<span style="color: #9cdcfe;">horiz</span>,&nbsp;<span style="color: #9cdcfe;">verti</span>,&nbsp;<span style="color: #9cdcfe;">numMine</span>);로</div>
<div style="line-height: 19px;">폭탄위치정할 랜덤 Array 만드는 함수 호출을 하는데</div>
<div style="line-height: 19px;">이상한것이</div>
<div style="line-height: 19px;">makeArray함수에서는 tbody.children[특정n]하면</div>
<div style="line-height: 19px;">호출되는데 <span style="color: #dcdcaa;">randomNumberForDigging이 함수에서는 호출이</span></div>
<div style="line-height: 19px;"><span style="color: #dcdcaa;">안되요.</span></div>
<div style="line-height: 19px;"><span style="color: #dcdcaa;">근데 </span><span style="color: #dcdcaa;">randomNumberForDigging여기서 </span></div>
<div style="line-height: 19px;"><span style="color: #dcdcaa;">console.log(</span>tbody.children[특정n]<span style="color: #dcdcaa;">)은 undefined인데</span></div>
<div style="line-height: 19px;"><span style="color: #dcdcaa;">console.log(</span>tbody.children<span style="color: #dcdcaa;">) 은 htmlcollection이라며</span></div>
<div style="line-height: 19px;"><span style="color: #dcdcaa;">호출이 되요..이틀동안 원인을 찾고있는데 모르겠어요ㅠㅠ</span></div>
</div>

<p>앗 물어보고 바로 해결됐어요! 알고보니&nbsp;</p>
<p>makeArray함수에서tr과td를 만들기 전에</p>
<p><span style="background-color: #1e1e1e; color: #dcdcaa; font-family: Consolas, 'Courier New', monospace; font-size: 14px; white-space: pre;">randomNumberForDigging함수를 호출해서 그렇네요!</span></p>

인프런 커뮤니티 질문&답변

children이 호출이 안되요ㅠㅠ