itchyny https://blog.hatena.ne.jp/itchyny/ プログラムモグモグ https://itchyny.hatenablog.com/ JavaScript > Number.prototype.n = function () { for(var i = +this, a = []; i <= n; a.push(i++)); return a; } [Function] > n = 15 15 > x = 1..n () [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 ] > x [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 ] > 問題点: ()を書かなきゃいけない. 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fitchyny.hatenablog.com%2Fentry%2F20110407%2F1302160446" title="1..nが配列になるある一つの方法 - プログラムモグモグ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2011-04-07 16:14:06 rich https://itchyny.hatenablog.com/entry/20110407/1302160446 1.0 100%