{"author_name":"teramako","blog_url":"https://teramako.hatenadiary.org/","url":"https://teramako.hatenadiary.org/entry/20130116/p1","blog_title":"hogehoge @teramako","title":"Firefox 21(Nightly) \u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ad\u30fc\u9806\u5e8f\u304cES.next\u3067\u63d0\u6848\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u306b","published":"2013-01-16 00:00:00","author_url":"https://blog.hatena.ne.jp/teramako/","provider_name":"Hatena Blog","categories":["ECMASCript","Firefox"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fteramako.hatenadiary.org%2Fentry%2F20130116%2Fp1\" title=\"Firefox 21(Nightly) \u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ad\u30fc\u9806\u5e8f\u304cES.next\u3067\u63d0\u6848\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u306b - hogehoge @teramako\" 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%","type":"rich","height":"190","description":"\u4eca\u307e\u3067\u3001Firefox\u306eJS\u30a8\u30f3\u30b8\u30f3\u3001SpiderMonkey\u3067\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ad\u30fc\u306e\u9806\u5e8f\u306f\u5b9a\u7fa9\u3055\u308c\u305f\u9806\u3060\u3063\u305f\u3002 var o = { 2: 0, 3: 1, a: \"A\", 1: 2, }; o[0] = 0; for (var key in o) { console.log(key + \":\" + o[key]); } 2: 0 3: 1 a: A 1: 2 0: 0\u3068\u3044\u3046\u611f\u3058\u3002\u3044\u3064\u304b\u3089\u304b\u3001\u7d30\u304b\u3044\u3068\u3053\u308d\u306f\u77e5\u3089\u306a\u3044\u3051\u3069\u3001Firefox 21\u3067\u78ba\u8a8d\u3057\u305f\u3068\u3053\u308d\u3001\u9806\u5e8f\u304cECMAScript.next\u3067\u63d0\u6848\u3055\u308c\u3066\u3044\u308b\u9806\u5e8f\u306b\u5909\u66f4\u3055\u308c\u3066\u3044\u305f\u3002strawman:enumeration [ES Wiki]\u3053\u2026","image_url":null,"version":"1.0","provider_url":"https://hatena.blog"}