<p>왼쪽위에서 대각선 검사할때</p>
<p>가운데 줄과 가운데 칸이 을 빼면 0 이되는데</p>
<p>if문에서 왜 2가 될경우로 조건문을 거나요 ..?</p>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: Consolas, 'Courier New', monospace; font-size: 14px; line-height: 19px; white-space: pre;">
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//대각선&nbsp;검사(왼쪽&nbsp;위)</span></div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>(<span style="color: #4ec9b0;">Math</span>.<span style="color: #dcdcaa;">abs</span>(<span style="color: #9cdcfe;">colName</span>&nbsp;-&nbsp;<span style="color: #9cdcfe;">rowName</span>)&nbsp;==&nbsp;<span style="color: #b5cea8;">2</span>){</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>(</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">allRow</span>[<span style="color: #b5cea8;">0</span>][<span style="color: #b5cea8;">2</span>].<span style="color: #9cdcfe;">textContent</span>&nbsp;==&nbsp;<span style="color: #9cdcfe;">x</span>&nbsp;&amp;&amp;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">allRow</span>[<span style="color: #b5cea8;">1</span>][<span style="color: #b5cea8;">1</span>].<span style="color: #9cdcfe;">textContent</span>&nbsp;==&nbsp;<span style="color: #9cdcfe;">x</span>&nbsp;&amp;&amp;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">allRow</span>[<span style="color: #b5cea8;">2</span>][<span style="color: #b5cea8;">0</span>].<span style="color: #9cdcfe;">textContent</span>&nbsp;==&nbsp;<span style="color: #9cdcfe;">x</span>&nbsp;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;){</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #4ec9b0;">console</span>.<span style="color: #dcdcaa;">log</span>(<span style="color: #ce9178;">'왼쪽&nbsp;위&nbsp;완성'</span>);</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">var</span>&nbsp;<span style="color: #9cdcfe;">full</span>&nbsp;=&nbsp;<span style="color: #569cd6;">true</span>;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</div>
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;</div>
</div>

<p>if ([0, 2].includes(Math.abs(colName - rowName))) {</p>
<p>}</p>
<p>로 수정하시면 되겠습니다.</p>

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