{"type":"rich","height":"190","categories":["javascript"],"published":"2017-05-12 15:08:30","version":"1.0","provider_name":"Hatena Blog","image_url":null,"provider_url":"https://hatena.blog","url":"https://akinobu.net/entry/2017/05/12/150830","author_name":"kuronekopunk","blog_title":"\u30ce\u30f3\u30ab\u30d5\u30a7\u30a4\u30f3\u3067\u3042\u306a\u305f\u306b\u3084\u3055\u3057\u3044","blog_url":"https://akinobu.net/","description":"js\u306eObject.lenght\u304c\u306a\u3044\u2026 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5 Object.keys \u3092\u4f7f\u3046 var obj = {}; console.log(Object.keys(obj).length); // => 0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fakinobu.net%2Fentry%2F2017%2F05%2F12%2F150830\" title=\"JavaScript\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3001\u7a7a\u5224\u5b9a\u3092\u3059\u308b Object,length,blank - \u30ce\u30f3\u30ab\u30d5\u30a7\u30a4\u30f3\u3067\u3042\u306a\u305f\u306b\u3084\u3055\u3057\u3044\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","author_url":"https://blog.hatena.ne.jp/kuronekopunk/","title":"JavaScript\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3001\u7a7a\u5224\u5b9a\u3092\u3059\u308b Object,length,blank"}