{"description":"\u6614\u66f8\u3044\u305f\u30b3\u30fc\u30c9\u307f\u3066\u3044\u305f\u3089\u3001 var a = getList(); // \u914d\u5217\u3092\u8fd4\u3059 if (a != 0) { // \u914d\u5217\u306b\u8981\u7d20\u304c\u3042\u308c\u3070\u51e6\u7406\u3092 } \u306a\u306e\u304c\u3042\u3063\u3066\u3001\u304e\u3087\u3063\u3068\u3057\u307e\u3057\u305f\u3002 \u672c\u5f53\u306f\u3001\u4e0b\u8a18\u307f\u305f\u3044\u306a\u611f\u3058\u3067length\u3092\u53c2\u7167\u3057\u305f\u304b\u3063\u305f\u306f\u305a\u3002 var a = getList(); // \u914d\u5217\u3092\u8fd4\u3059 if (a.length != 0) { // \u914d\u5217\u306b\u8981\u7d20\u304c\u3042\u308c\u3070\u51e6\u7406\u3092 } \u305f\u3060\u3001\u5b9f\u969b\u3053\u308c\u3067\u3082\u601d\u3063\u305f\u3068\u304a\u308a\u306e\u52d5\u304d\u306b\u306a\u3063\u3066\u3044\u3066\u3001\u3001\u305d\u308c\u306f\u305d\u308c\u3067\u304a\u304b\u3057\u3044\u6c17\u304c\u3002 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u6570\u5024\u306e\u6bd4\u8f03\u3060\u304b\u3089\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ftrue\u306b\u5909\u63db\u3055\u308c\u3066\u304b\u3089\u6bd4\u8f03\u3055\u308c\u308b\u306f\u305a\u3067\u3001\u305d\u3046\u306a\u308b\u3068\u30010\u3068\u6bd4\u8f03\u3057\u305f\u3089\u3001\u5fc5\u305afalse\u306b\u306a\u308b\u3082\u3093\u3060\u2026","provider_url":"https://hatena.blog","categories":["[programming]"],"height":"190","url":"https://blog.enjoyxstudy.com/entry/20090923/p1","title":" new Array() == 0 -> true","image_url":null,"blog_url":"https://blog.enjoyxstudy.com/","provider_name":"Hatena Blog","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.enjoyxstudy.com%2Fentry%2F20090923%2Fp1\" title=\" new Array() == 0 -&gt; true - Enjoy*Study\" 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%","blog_title":"Enjoy*Study","published":"2009-09-23 00:00:00","author_url":"https://blog.hatena.ne.jp/onozaty/","version":"1.0","author_name":"onozaty"}