{"author_name":"shawshank99","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","height":"190","version":"1.0","width":"100%","type":"rich","url":"https://aoking.hatenablog.jp/entry/20100506/1273153315","categories":["JavaScript"],"title":"\u6570\u5024\u5224\u5b9a\u3059\u308b\u95a2\u6570","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Faoking.hatenablog.jp%2Fentry%2F20100506%2F1273153315\" title=\"\u6570\u5024\u5224\u5b9a\u3059\u308b\u95a2\u6570 - \u306b\u3087\u304d\u306b\u3087\u304d\u30d6\u30ed\u30b0\" 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/shawshank99/","blog_title":"\u306b\u3087\u304d\u306b\u3087\u304d\u30d6\u30ed\u30b0","blog_url":"https://aoking.hatenablog.jp/","published":"2010-05-06 22:41:55","image_url":null,"description":"JavaScript \u3067\u6570\u5024\u5224\u5b9a\u3092\u884c\u3046\u95a2\u6570\u3002isNaN\u306f\u4f7f\u3044\u7269\u306b\u306a\u3089\u306a\u3044\u306e\u3067\u3053\u306e\u3088\u3046\u306a\u95a2\u6570\u3092\u81ea\u524d\u3067\u7528\u610f\u3059\u308b\u3002 Array \u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5f3e\u3044\u3066\u3044\u308b\u306e\u306f\u3001[1] \u306e\u3088\u3046\u306a\u5f15\u6570\u3092\u9632\u3050\u305f\u3081\u3002[1]\u3092 String \u306b\u30ad\u30e3\u30b9\u30c8\u3059\u308b\u3068 \"1\" \u3068\u306a\u308a\u3001\u6570\u5024\u3068\u307f\u306a\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3060\u3002 function isNumber(value) { if(value instanceof Array) return false; //trim value = String(value).replace(/^[ ]+|[ ]+$/g, ''); if(value.length == 0) return false; i\u2026"}