{"height":"190","published":"2024-04-05 23:46:46","type":"rich","author_name":"ledsun","title":"JS.falsy?","provider_name":"Hatena Blog","image_url":"https://m.media-amazon.com/images/I/51l0nocFbqL._SL500_.jpg","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fledsun.hatenablog.com%2Fentry%2F2024%2F04%2F05%2F234646\" title=\"JS.falsy? - @ledsun blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","provider_url":"https://hatena.blog","categories":["ruby.wasm","JavaScript","\u672c"],"blog_title":"@ledsun blog","url":"https://ledsun.hatenablog.com/entry/2024/04/05/234646","version":"1.0","author_url":"https://blog.hatena.ne.jp/ledsun/","blog_url":"https://ledsun.hatenablog.com/","description":"ruby.wasm\u3088\u3046\u306b\u5024\u304cJavaScript\u306eFalsy\u306a\u5024\u304b\u5224\u5b9a\u3059\u308b\u95a2\u6570\u3092\u5b9f\u88c5\u3057\u307e\u3057\u305f\u3002 https://github.com/ledsun/ruby.wasm/blob/19b8f245af9806ceb67601f851300d2df6ac5674/packages/gems/js/lib/js.rb#L98-L109 def self.falsy?(value) value == JS::Null || value == JS::Undefined || # Use the strictly_eql? method to compare values using JavaScrip\u2026"}