{"author_url":"https://blog.hatena.ne.jp/youdive/","published":"2021-09-04 23:23:51","width":"100%","height":"190","type":"rich","description":"null\u3068undefined\u306e\u9055\u3044 null \u5909\u6570\u306f\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3002\u8a72\u5f53\u3059\u308b\u5024\u304c\u5b58\u5728\u3057\u306a\u3044\u3002 let x = null; console.log(x); #=> null undefined \u672a\u5b9a\u7fa9\u3002\u5909\u6570\u306f\u5ba3\u8a00\u3057\u305f\u304c\u5024\u304c\u4ee3\u5165\u3055\u308c\u3066\u3044\u306a\u3044\u3002 let x; console.log(x); #=> undefined","provider_url":"https://hatena.blog","author_name":"youdive","image_url":null,"blog_title":"sai_dive IL","title":"\u3010JavaScript\u3011null\u3068undefined\u306e\u9055\u3044","categories":[],"url":"https://youdive.hatenadiary.com/entry/2021/09/04/232351","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyoudive.hatenadiary.com%2Fentry%2F2021%2F09%2F04%2F232351\" title=\"\u3010JavaScript\u3011null\u3068undefined\u306e\u9055\u3044 - sai_dive IL\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","blog_url":"https://youdive.hatenadiary.com/"}