{"author_url":"https://blog.hatena.ne.jp/athro/","categories":["\u2605Math","\u2605AI"],"provider_url":"https://hatena.blog","url":"https://chds.hatenablog.com/entry/2025/04/26/%E3%80%90014%E3%80%91","description":"\u3010009\u3011\u5024\u3092\u56db\u6368\u4e94\u5165\u3057\u305f\u7d50\u679c\u3092\u8868\u793a \u30d7\u30ed\u30f3\u30d7\u30c8\u4f8b JavaScript\u3067\u5024\u3092\u56db\u6368\u4e94\u5165\u3057\u305f\u7d50\u679c\u3092\u8868\u793a\u3059\u308b\u554f\u984c\u3092\uff15\u554f\u4f5c\u6210\u3057\u3066 \u6570\u5024\u306e\u5024\u3092\u56db\u6368\u4e94\u5165\u3059\u308b\u306b\u306f\u3001\u6570\u5b66\u95a2\u6570\u300cMath.round( )\u300d\u3092\u4f7f\u3044\u307e\u3059 Math.round(\u6570\u5024\u306e\u5024) Math.round() \u3068\u306f Math.round() \u306f\u3001\u6570\u5024\u3092\u300c\u56db\u6368\u4e94\u5165\u300d\u3057\u3066\u6574\u6570\u306b\u3059\u308b\u95a2\u6570\u3067\u3059\u3002 \ud83d\udc49 \u5c0f\u6570\u70b9\u4ee5\u4e0b\u304c 0.5\u4ee5\u4e0a \u2192 \u5207\u308a\u4e0a\u3052 0.5\u672a\u6e80 \u2192 \u5207\u308a\u6368\u3066 \u306b\u306a\u308a\u307e\u3059\u3002 \u57fa\u672c\u306e\u4f7f\u3044\u65b9 Math.round(\u6570\u5024) \u3010\u4f8b\u3011 console.log(Math.round(3.2)); // 3 console.log(Math.round(3.5\u2026","width":"100%","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/a/athro/20260227/20260227085747.png","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fchds.hatenablog.com%2Fentry%2F2025%2F04%2F26%2F%25E3%2580%2590014%25E3%2580%2591\" title=\"\u3010009\u3011\u5024\u3092\u56db\u6368\u4e94\u5165\u3057\u305f\u7d50\u679c\u3092\u8868\u793a - JavaScript\uff08\u6f14\u7fd2\u30d7\u30ed\u30f3\u30d7\u30c8\uff09\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","version":"1.0","published":"2026-01-09 22:57:28","type":"rich","provider_name":"Hatena Blog","title":"\u3010009\u3011\u5024\u3092\u56db\u6368\u4e94\u5165\u3057\u305f\u7d50\u679c\u3092\u8868\u793a","blog_title":"JavaScript\uff08\u6f14\u7fd2\u30d7\u30ed\u30f3\u30d7\u30c8\uff09","blog_url":"https://chds.hatenablog.com/","author_name":"athro","height":"190"}