{"image_url":null,"categories":["Firefox","JavaScript"],"width":"100%","description":"A sharp variable is a syntax in object initializers that allows serialization of objects that have cyclic references or multiple references to the same object. #\u6570\u5b57\u306b\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u4ed6\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u30ea\u30c6\u30e9\u30eb\u5185\u3067\u53c2\u7167\u3067\u304d\u308b\u3089\u3059\u3043\u3002 let hoge = ({obj: #1={neko: 'cat'}, meow: #1#.neko}); alert(hoge.meow); // 'cat' alert(hoge.obj.neko); /\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fanekos.hatenablog.com%2Fentry%2F20100301%2F1267416180\" title=\"\u5909\u614b\u8a18\u6cd5 Sharp Variables - \u5730\u7344\u306e\u30cd\u30b3\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","blog_title":"\u5730\u7344\u306e\u30cd\u30b3\u30d6\u30ed\u30b0","version":"1.0","provider_name":"Hatena Blog","blog_url":"https://anekos.hatenablog.com/","height":"190","published":"2010-03-01 13:03:00","type":"rich","author_url":"https://blog.hatena.ne.jp/nokturnalmortum/","title":"\u5909\u614b\u8a18\u6cd5 Sharp Variables","author_name":"nokturnalmortum","url":"https://anekos.hatenablog.com/entry/20100301/1267416180"}