{"version":"1.0","description":"function f(arg){ // \u5ba3\u8a00\u6642\u306e\u5f15\u6570\u306e\u6570\u3068\u6e21\u3055\u308c\u305f\u5f15\u6570\u306e\u6570\u306e\u6bd4\u8f03 // \u5de6\u8fba\u306f\u95a2\u6570\u81ea\u8eabFunction\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306elength // \u53f3\u8fba\u306f\u30ed\u30fc\u30ab\u30eb\u5909\u6570arguments\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306elength return arguments.callee.length==arguments.length; } f(1); //true f(1,2); //false arguments.callee\u306f\u5b9f\u884c\u4e2d\u95a2\u6570\u3078\u306e\u53c2\u7167\u306a\u306e\u3067\u3001arguments.callee.length\u3092f.length\u3068\u3057\u3066\u3082\u540c\u3058\u3002 \u5f53\u7136\u306a\u304c\u3089f.length\u3067\u306f\u95a2\u6570\u306e\u5916\u304b\u3089\u3067\u3082\u53ef\u80fd\u3002 \u305f\u3060\u3057 \u300cJavaScrip\u2026","height":"190","type":"rich","image_url":null,"title":"\u5ba3\u8a00\u6642\u306e\u5f15\u6570\u3068\u6e21\u3055\u308c\u305f\u5f15\u6570\u306e\u6bd4\u8f03","author_name":"ynsyns","author_url":"https://blog.hatena.ne.jp/ynsyns/","categories":["JavaScript"],"width":"100%","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","published":"2009-05-12 13:05:11","url":"https://ynsyns.hatenadiary.org/entry/20090512/1242101111","blog_title":"\u3055\u3055\u3044\u306aoutput","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fynsyns.hatenadiary.org%2Fentry%2F20090512%2F1242101111\" title=\"\u5ba3\u8a00\u6642\u306e\u5f15\u6570\u3068\u6e21\u3055\u308c\u305f\u5f15\u6570\u306e\u6bd4\u8f03 - \u3055\u3055\u3044\u306aoutput\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://ynsyns.hatenadiary.org/"}