回答編集履歴
1
chousei
answer
CHANGED
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@@ -1,6 +1,7 @@
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1
1
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```
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2
2
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window.addEventListener('DOMContentLoaded', ()=>{
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3
3
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var tds=[...document.querySelectorAll('table tr td:first-child')];
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4
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+
var idx=tds.map(x=>x.textContent).indexOf("");
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4
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-
console.log(tds);
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5
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+
console.log(idx<0?null:tds[idx]);
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5
6
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});
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6
7
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```
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