{"image_url":null,"description":"\u4e00\u6c17\u306b\u7d39\u4ecb spread array \u30c6\u30b9\u30c8\u30b3\u30fc\u30c9:mozilla-central mozilla/js/src/jit-test/tests/basic/spread-array.js var a1 = [2,3,4,5]; var a2 = [1, ...a1, 6]; // => [1,2,3,4,5,6] \u306a\u3093\u3066\u3044\u3046\u304b\u3001Array#concat\u307f\u305f\u3044\u306a\u611f\u3058\u3067\u3082\u3042\u308b\u3002[ ...arryObj, ]\u3068\u3059\u308b\u3053\u3068\u3067arryObj\u304c\u5c55\u958b\u3055\u308c\u308b\u3002\u6b63\u76f4\u3061\u3087\u3044\u3068\u4f7f\u3044\u9053\u304c\u601d\u3044\u3064\u304b\u306a\u3044...\u3002 Number\u30d3\u30eb\u30c8\u30a4\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5e7e\u3064\u304b\u30e1\u30bd\u30c3\u30c9\u8ffd\u52a0 ES.next \u3067\u306fNumber\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u591a\u304f\u306e\u30e1\u30bd\u2026","provider_name":"Hatena Blog","published":"2012-06-08 00:00:00","version":"1.0","author_url":"https://blog.hatena.ne.jp/teramako/","provider_url":"https://hatena.blog","width":"100%","blog_title":"hogehoge @teramako","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fteramako.hatenadiary.org%2Fentry%2F20120608%2Fp1\" title=\"Firefox Nightly \u3067\u69cb\u6587\u3068\u304bAPI\u3068\u304b\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u8ffd\u52a0\u3055\u308c\u305f - hogehoge @teramako\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"teramako","url":"https://teramako.hatenadiary.org/entry/20120608/p1","blog_url":"https://teramako.hatenadiary.org/","type":"rich","categories":["Firefox","JavaScript"],"title":"Firefox Nightly \u3067\u69cb\u6587\u3068\u304bAPI\u3068\u304b\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u8ffd\u52a0\u3055\u308c\u305f","height":"190"}