{"title":"javascript\u306eif\u6587\u306b\u3064\u3044\u3066","categories":["javascript"],"description":"\u6700\u8fd1\u75b2\u308c\u304c\u3061\u3067\u611f\u899a\u3067\u3084\u3063\u3066\u3057\u307e\u3044\u304c\u3061\u306a\u306e\u3067\u30e1\u30e2\u3057\u3066\u304a\u304f\u3002 <script> function testIf(value) { if (value) { console.log('true'); } else { console.log('false'); } }; // \u6570\u5024 testIf(0); // false testIf(1); // true testIf(-1); // true // \u6587\u5b57\u5217 testIf(''); // false testIf('0'); // true testIf('1'); // true // \u771f\u507d\u5024 testIf(false); // false t\u2026","version":"1.0","width":"100%","author_name":"yoppy0066","provider_name":"Hatena Blog","image_url":null,"blog_title":"\u3068\u308a\u3042\u3048\u305aphp\u3068\u304b","author_url":"https://blog.hatena.ne.jp/yoppy0066/","blog_url":"https://kimagureneet.hatenablog.com/","published":"2017-12-14 15:55:20","provider_url":"https://hatena.blog","type":"rich","url":"https://kimagureneet.hatenablog.com/entry/2017/12/14/155520","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkimagureneet.hatenablog.com%2Fentry%2F2017%2F12%2F14%2F155520\" title=\"javascript\u306eif\u6587\u306b\u3064\u3044\u3066 - \u3068\u308a\u3042\u3048\u305aphp\u3068\u304b\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}