{"title":"Promise\u306e\u30b5\u30d6\u30af\u30e9\u30b9 (\u30de\u30cb\u30a2\u30c3\u30af)","description":"\u52d5\u4f5c\u30a4\u30e1\u30fc\u30b8 /* \u30b5\u30d6\u30af\u30e9\u30b9\u300cechoPromise\u300d\u306e\u30af\u30e9\u30b9\u5b9a\u7fa9 new echoPromise(arg)\u3092\u3059\u308b\u3068\u30013\u79d2\u5f8c\u306bthen\u306barg\u304c\u5e30\u3063\u3066\u304f\u308b */ (async function(){ console.log(await new echoPromise(\"\u306b\u3083\u3093\")); })() // 3\u79d2\u5f8c\u306b\u306b\u3083\u3093\u3068\u8868\u793a\u3057\u305f\u3044 \u306f\u3058\u3081\u306f\u8ab0\u3057\u3082\u3053\u3093\u306a\u611f\u3058\u306e\u5b9a\u7fa9\u304c\u3057\u305f\u3044\u306f\u305a class echoPromise extends Promise{ constructor(arg){ super(resolve=>{ setTimeout(()=>{ resolve(arg) },3000) }) }\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpekko1215.hatenablog.com%2Fentry%2F2018%2F09%2F06%2F232705\" title=\"Promise\u306e\u30b5\u30d6\u30af\u30e9\u30b9 (\u30de\u30cb\u30a2\u30c3\u30af) - \u30d2\u30c7\u30db\u30d2\u306e\u304a\u3082\u3061\u3083\u3070\u3053\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u30d2\u30c7\u30db\u30d2\u306e\u304a\u3082\u3061\u3083\u3070\u3053","author_url":"https://blog.hatena.ne.jp/pekko1215/","type":"rich","height":"190","author_name":"pekko1215","published":"2018-09-06 23:27:05","version":"1.0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/p/pekko1215/20180906/20180906232303.png","blog_url":"https://pekko1215.hatenablog.com/","categories":["JavaScript"],"provider_name":"Hatena Blog","url":"https://pekko1215.hatenablog.com/entry/2018/09/06/232705","width":"100%","provider_url":"https://hatena.blog"}