{"provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkoba04.hatenadiary.org%2Fentry%2F20110918%2F1316357080\" title=\"JavaScript\u3067\u306e\u3061\u3087\u3063\u3068\u6c17\u306b\u306a\u3063\u305ffor in\u306a\u3069\u306e\u66f8\u304d\u65b9\u30e1\u30e2 - \u8eca\u8f2a\u3092\u518d\u767a\u660e / koba04\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["JavaScript"],"title":"JavaScript\u3067\u306e\u3061\u3087\u3063\u3068\u6c17\u306b\u306a\u3063\u305ffor in\u306a\u3069\u306e\u66f8\u304d\u65b9\u30e1\u30e2","height":"190","blog_title":"\u8eca\u8f2a\u3092\u518d\u767a\u660e / koba04\u306e\u65e5\u8a18","url":"https://koba04.hatenadiary.org/entry/20110918/1316357080","author_url":"https://blog.hatena.ne.jp/koba04/","provider_url":"https://hatena.blog","published":"2011-09-18 23:44:40","width":"100%","image_url":null,"blog_url":"https://koba04.hatenadiary.org/","type":"rich","author_name":"koba04","version":"1.0","description":"\u3061\u3087\u3063\u3068\u6c17\u306b\u306a\u3063\u305ffor in\u306e\u66f8\u304d\u65b9 \u3042\u308bJavaScript\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30b3\u30fc\u30c9\u3092\u898b\u3066\u3044\u305f\u3068\u3053\u308d\u3001\u898b\u6163\u308c\u306a\u3044\u66f8\u304d\u65b9\u304c\u3042\u3063\u305f\u306e\u3067\u30e1\u30e2\u3002 var cityInfo = { shinjuku: \"tokyo\", shibuya: \"tokyo\", yokohama: \"kanagawa\", kyoto: \"kyoto\" }; for ( city in cityInfo ) if ( cityInfo[city] === \"tokyo\" ) { console.log(city); } // shinjuku // shibuya \u3053\u306e\u3088\u3046\u306bfor ( key in obj ) if { } \u3068\u2026"}