{"author_url":"https://blog.hatena.ne.jp/shuzo_kino/","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshuzo-kino.hateblo.jp%2Fentry%2F2016%2F05%2F28%2F221217\" title=\"getter\u3068setter\u3092\u4f7f\u3063\u3066\u65e2\u5b58\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u62e1\u5f35\u3059\u308b - Bye Bye Moore\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"getter\u3068setter\u3092\u4f7f\u3063\u3066\u65e2\u5b58\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u62e1\u5f35\u3059\u308b","provider_url":"https://hatena.blog","image_url":null,"url":"https://shuzo-kino.hateblo.jp/entry/2016/05/28/221217","categories":["javascript"],"width":"100%","blog_url":"https://shuzo-kino.hateblo.jp/","height":"190","author_name":"shuzo_kino","description":"javascript\u306fgetter\u3068setter\u3092\u4f7f\u3046\u3053\u3068\u3067\u65e2\u5b58\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u62e1\u5f35\u3059\u308b\u4e8b\u304c\u3067\u304d\u307e\u3059\u3002 \u5b9f\u969b\u306e\u3068\u3053\u308d \u901a\u5e38\u3001Date\u30af\u30e9\u30b9\u306b\u306fyear\u3068\u3044\u3046\u540d\u524d\u306e\u95a2\u6570\u306f\u3042\u308a\u307e\u305b\u3093\u3002 let now = new Date; console.log(now.year); //> undefined Date.prototype\u306b\u624b\u3092\u52a0\u3048\u308b\u4e8b\u3067year\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002 var d = Date.prototype; Object.defineProperty(d, \"year\", { get: () => {return this.getFullYear() }, set: (\u2026","published":"2016-05-28 22:12:17","type":"rich","version":"1.0","blog_title":"Bye Bye Moore"}