{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ft-amago.hatenadiary.org%2Fentry%2F20091122%2Fp1\" title=\"instanceof\u3067\u914d\u5217\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af - Domo-Domo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2009-11-22 00:00:00","description":"typeof\u3060\u3068\u914d\u5217\u306f\u3001object\u3068\u3057\u3066\u6271\u308f\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u304c instanceof\u3092\u4f7f\u3063\u3066\u3001\u914d\u5217\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002 var arr = []; var boo = arr instanceof Array; alert(boo); //true\u914d\u5217\u306e\u5834\u5408true\u3001\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306ffalse\u3092\u8fd4\u3057\u3066\u304d\u307e\u3059\u3002 Array\u3060\u3051\u3067\u306a\u304f\u3001Function\u3001Date\u306a\u3069\u3082\u4f7f\u3048\u308b\u307f\u305f\u3044\u3067\u3059\u3002","author_name":"t_amago","height":"190","blog_url":"https://t-amago.hatenadiary.org/","image_url":null,"blog_title":"Domo-Domo","author_url":"https://blog.hatena.ne.jp/t_amago/","version":"1.0","url":"https://t-amago.hatenadiary.org/entry/20091122/p1","width":"100%","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","title":"instanceof\u3067\u914d\u5217\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af","type":"rich","categories":["JS","WSH"]}