javascript
https://developer.mozilla.org/ja/Core_JavaScript_1.5_Guide/Predefined_Functions/isFinite_Function http://d.hatena.ne.jp/sandai/20100206/p1 めも
https://developer.mozilla.org/ja/Core_JavaScript_1.5_Guide/Predefined_Functions/isFinite_Function http://d.hatena.ne.jp/sandai/20100206/p1 めも