{"version":"1.0","description":"TypeScript\u306b\u306fObject\u306e\u3082\u3064property\u306b Optional Property \u3068\u3044\u3046\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002 property\u306b ? \u3092\u3064\u3051\u308b\u3053\u3068\u3067\u305d\u306eproperty\u304c\u306a\u3044\u5834\u5408\u3082\u3042\u308b\u3088\u3068\u3044\u3046\u3053\u3068\u3092\u8868\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u516c\u5f0f\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002 Not all properties of an interface may be required. Some exist under certain conditions or may not be there at all. ref. https://www.typescriptlang.org/doc\u2026","provider_url":"https://hatena.blog","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fema-hiro.hatenablog.com%2Fentry%2F2019%2F01%2F28%2F013325\" title=\"TypeScript \u306e Optional Property - emahiro/b.log\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"ema_hiro","height":"190","title":"TypeScript \u306e Optional Property","categories":["TypeScript"],"blog_title":"emahiro/b.log","published":"2019-01-28 01:33:25","blog_url":"https://ema-hiro.hatenablog.com/","url":"https://ema-hiro.hatenablog.com/entry/2019/01/28/013325","author_url":"https://blog.hatena.ne.jp/ema_hiro/","image_url":null,"type":"rich","provider_name":"Hatena Blog"}