{"image_url":null,"type":"rich","provider_url":"https://hatena.blog","categories":["JavaScript"],"description":"with\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30ea\u30c6\u30e9\u30eb\u3092\u4f7f\u3046\u3068\uff0cScheme\u306elet\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u3067\u304d\u308b\u3068\u77e5\u3063\u305f\uff0e var hoge = 1; with ({hoge: 2}) { print(hoge); // 2 } print(hoge); // 1 \u3053\u308c\u306f\u4fbf\u5229\u305d\u3046\uff0e\u3067\u3082\uff12\u7a2e\u985e\u306e\u62ec\u5f27\u304c\u5165\u308a\u4ea4\u3058\u3063\u3066\u3066\u3061\u3087\u3063\u3068\u8907\u96d1\u3060\u306a\u3041\uff0eJavaScript1.7\u306b\u306flet\u304c\u3042\u308b\u3089\u3057\u3044\uff0e \u3061\u306a\u307f\u306b\uff0cwith\u5185\u3067\u306e\u53c2\u7167\u9806\u306f\u300c\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u2192with\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u2192\u5916\u300d\u306e\u9806\uff0e \u5ba3\u8a00\u3057\u3066\u3044\u306a\u3044\u5909\u6570\u3078\u306e\u4ee3\u5165\u306f\uff0cwith\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3078\u306e\u4ee3\u5165\u3068\u89e3\u91c8\u3055\u308c\u308b\uff0e","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fgengar.hatenadiary.org%2Fentry%2F20080305%2F1204681156\" title=\"Scheme\u306elet\u306e\u3088\u3046\u306a\u3053\u3068 - \u304b\u304d\u306b\u3063\u304d\" 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/gengar/","blog_url":"https://gengar.hatenadiary.org/","published":"2008-03-05 10:39:16","url":"https://gengar.hatenadiary.org/entry/20080305/1204681156","title":"Scheme\u306elet\u306e\u3088\u3046\u306a\u3053\u3068","provider_name":"Hatena Blog","width":"100%","height":"190","author_name":"gengar","version":"1.0","blog_title":"\u304b\u304d\u306b\u3063\u304d"}