{"provider_url":"https://hatena.blog","blog_url":"https://amachang.hatenablog.com/","url":"https://amachang.hatenablog.com/entry/20061204/1165180769","provider_name":"Hatena Blog","categories":["JavaScript"],"height":"190","type":"rich","description":"\u3076\u3063\u3061\u3083\u3051 \u50d5\u306f\u9045\u5ef6\u8a55\u4fa1\u306e\u3053\u3068\u305f\u3076\u3093\u3042\u3093\u307e\u308a\u7406\u89e3\u3057\u3066\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002 \u3067\u3082\u3001\u3068\u308a\u3042\u3048\u305a\u3053\u3093\u306a\u306e\u4f5c\u3063\u3066\u307f\u305f function l(a) { return typeof a == 'function' ? a() : a } // lazy \u306e l \u3053\u3046\u3084\u3063\u3066\u4f7f\u3046 function add(i, j) { return l(i) + l(j) } var count = 0; alert(add(1, 1)); // 2 alert(add(1, function(){ return 1 })); // 2 alert(add(1, function(){ return count++ })); \u2026","title":" JavaScript \u3067\u9045\u5ef6\u8a55\u4fa1","width":"100%","author_name":"amachang","author_url":"https://blog.hatena.ne.jp/amachang/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Famachang.hatenablog.com%2Fentry%2F20061204%2F1165180769\" title=\" JavaScript \u3067\u9045\u5ef6\u8a55\u4fa1 - IT\u6226\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2006-12-04 06:19:29","image_url":null,"version":"1.0","blog_title":"IT\u6226\u8a18"}