{"blog_title":"\u3072\u3088\u3063\u3053PG\u306e\u30d6\u30ed\u30b0","url":"https://buzzword111.hatenablog.com/entry/2014/03/09/222448","description":"JavaScript\u306e\u95a2\u6570\u306b\u3064\u3044\u3066\u3001\u5b66\u3093\u3060\u306e\u3067\u57fa\u672c\u7684\u306a\u3053\u3068\u3067\u3059\u304c\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3057\u307e\u3059\u3002 \u95a2\u6570\u306e\u5b9a\u7fa9\u65b9\u6cd5 var addFunc = function(a,b){ return (a+b); }; \u95a2\u6570\u306f\u5fc5\u305a\u5024\u3092\u8fd4\u3059\u3002 var func = function(){ }; console.log(func() === undefind); //=> true return\u6587\u3092\u66f8\u304b\u306a\u3051\u308c\u3070\u3001undefind\u304c\u8fd4\u3055\u308c\u308b\u3002 \u95a2\u6570\u306f\u7b2c\u4e00\u7d1a\u95a2\u6570 \u7b2c\u4e00\u7d1a\u95a2\u6570\u3068\u3044\u3046\u306e\u306f\u3001 \u95a2\u6570\u3092 \u30fb\u5909\u6570\u306b\u4ee3\u5165\u51fa\u6765\u308b\u3002 \u30fb\u914d\u5217\u306b\u4ee3\u5165\u51fa\u6765\u308b\u3002 \u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5024\u3068\u3057\u3066\u4ee3\u5165\u51fa\u6765\u308b\u3002 \u30fb\u95a2\u6570\u306e\u623b\u308a\u5024\u3068\u3057\u3066\u8fd4\u3059\u3053\u3068\u304c\u51fa\u6765\u308b\u3002\u3068\u3044\u3063\u305f\u3088\u3046\u306a\u2026","provider_url":"https://hatena.blog","height":"190","author_url":"https://blog.hatena.ne.jp/buzzword111/","published":"2014-03-09 22:24:48","provider_name":"Hatena Blog","author_name":"buzzword111","image_url":"http://ecx.images-amazon.com/images/I/51jMq3+DklL.jpg","categories":["JavaScript"],"type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbuzzword111.hatenablog.com%2Fentry%2F2014%2F03%2F09%2F222448\" title=\"JavaScript\u306e\u95a2\u6570\u306b\u3064\u3044\u3066\u3001\u5fa9\u7fd2\u3092\u304b\u306d\u3066\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3057\u3066\u307f\u308b\u3002 - \u3072\u3088\u3063\u3053PG\u306e\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>","title":"JavaScript\u306e\u95a2\u6570\u306b\u3064\u3044\u3066\u3001\u5fa9\u7fd2\u3092\u304b\u306d\u3066\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3057\u3066\u307f\u308b\u3002","width":"100%","blog_url":"https://buzzword111.hatenablog.com/","version":"1.0"}