{"version":"1.0","url":"https://vividcode.hatenablog.com/entry/js/this-keyword-spec","provider_url":"https://hatena.blog","published":"2013-02-02 18:26:44","type":"rich","title":"JavaScript \u306e this \u30ad\u30fc\u30ef\u30fc\u30c9\u306b\u7d50\u3073\u3064\u3051\u3089\u308c\u308b\u5024\u306f\u3069\u306e\u3088\u3046\u306b\u6c7a\u5b9a\u3055\u308c\u308b\u306e\u304b (\u8a00\u8a9e\u4ed5\u69d8\u306e\u8aac\u660e)","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fvividcode.hatenablog.com%2Fentry%2Fjs%2Fthis-keyword-spec\" title=\"JavaScript \u306e this \u30ad\u30fc\u30ef\u30fc\u30c9\u306b\u7d50\u3073\u3064\u3051\u3089\u308c\u308b\u5024\u306f\u3069\u306e\u3088\u3046\u306b\u6c7a\u5b9a\u3055\u308c\u308b\u306e\u304b (\u8a00\u8a9e\u4ed5\u69d8\u306e\u8aac\u660e) - \u3072\u3060\u307e\u308a\u30bd\u30b1\u30c3\u30c8\u306f\u58ca\u308c\u306a\u3044\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/nobuoka/","image_url":null,"categories":["JavaScript","ECMAScript"],"blog_title":"\u3072\u3060\u307e\u308a\u30bd\u30b1\u30c3\u30c8\u306f\u58ca\u308c\u306a\u3044","width":"100%","height":"190","author_name":"nobuoka","blog_url":"https://vividcode.hatenablog.com/","description":"\u6700\u8fd1 JavaScript \u306e this \u30ad\u30fc\u30ef\u30fc\u30c9\u306b\u3064\u3044\u3066\u306e\u8a18\u4e8b\u3092\u3044\u304f\u3064\u304b\u898b\u304b\u3051\u3066 \u300c\u305d\u3046\u3044\u3084\u81ea\u5206\u3082\u6614 this \u30ad\u30fc\u30ef\u30fc\u30c9\u306b\u3064\u3044\u3066\u8a18\u4e8b\u3092\u66f8\u3044\u305f\u306a\u30fc\u300d \u3068\u601d\u3063\u3066 \u53e4\u3044\u8a18\u4e8b \u3092\u898b\u8fd4\u3057\u3066\u307f\u305f\u306e\u3067\u3059\u304c\u3001\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u3053\u3068\u3057\u304b\u8aac\u660e\u3057\u3066\u306a\u304b\u3063\u305f\u306e\u3067\u6539\u3081\u3066 this \u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u5168\u822c\u7684\u306a\u8a71\u3092\u66f8\u3044\u3066\u304a\u3053\u3046\u304b\u3068\u601d\u3044\u307e\u3059\u3002 \u672c\u8a18\u4e8b\u306f ECMA-262 5.1th \u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002 \u521d\u5fc3\u8005\u5411\u3051\u306e this \u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u4f7f\u3044\u65b9\u306e\u6307\u91dd\u3092\u793a\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u3082 JavaScript \u51e6\u7406\u7cfb\u306e\u5b9f\u88c5\u306e\u8aac\u660e\u3092\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u3082\u306a\u304f\u3001JavaScript \u8a00\u8a9e\u30b3\u30a2\u306e\u4ed5\u69d8\u3092\u8aac\u660e\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 ECMA-262 5\u2026"}