結論
const n = 4;
const arr1 = new Array(n).fill(null).map(_ => []);
理由
fill の中身にオブジェクトを放り込むと、シャローコピ…
↧
Channel:
Node.jsタグが付けられた新着記事 - Qiita
X
Are you the publisher?
Claim or
contact us
about this channel.
X
0
Channel Details:
- Title: Node.jsタグが付けられた新着記事 - Qiita
- Channel Number: 75629132
- Language: Japanese
- Registered On: October 29, 2019, 6:14 am
- Number of Articles: 9409
- Latest Snapshot: December 10, 2025, 6:03 pm
- RSS URL: https://qiita.com/tags/node.js/feed
- Publisher: https://qiita.com
- Description: QiitaでNode.jsタグが付けられた新着記事
- Catalog: //qiita79.rssing.com/catalog.php?indx=75629132
© 2025 //www.rssing.com