{"author_name":"katsube","type":"rich","provider_url":"https://hatena.blog","width":"100%","categories":["HTML5","JavaScript","title"],"version":"1.0","blog_url":"https://blog.katsubemakito.net/","image_url":null,"title":" [HTML5] JavaScript\u3067title\u30bf\u30b0\u3092\u5909\u66f4\u3059\u308b","url":"https://blog.katsubemakito.net/html5/title-change","blog_title":"\u306d\u3053\u306e\u8db3\u8de1R","author_url":"https://blog.hatena.ne.jp/katsube/","published":"2021-02-11 19:12:24","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.katsubemakito.net%2Fhtml5%2Ftitle-change\" title=\" [HTML5] JavaScript\u3067title\u30bf\u30b0\u3092\u5909\u66f4\u3059\u308b - \u306d\u3053\u306e\u8db3\u8de1R\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","height":"190","description":"\u5c0f\u30cd\u30bf\u3067\u3059\u3002 title\u30bf\u30b0\u306e\u5185\u5bb9\u3092\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u306b\u5909\u66f4\u3059\u308b\u5834\u5408\u306f2\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002 \u307e\u305a\u306fdocument.title\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u76f4\u63a5\u5024\u3092\u4ee3\u5165\u3059\u308b\u65b9\u6cd5\u3002\u57fa\u672c\u7684\u306b\u306f\u3053\u3061\u3089\u3092\u5229\u7528\u3057\u307e\u3059\u3002 document.title = 'foo' \u6b21\u306btitle\u4ee5\u5916\u306e\u8981\u7d20\u3092\u5909\u66f4\u3059\u308b\u3068\u304d\u3068\u540c\u69d8\u306bquerySelector()\u3067\u8fd4\u5374\u3055\u308c\u305fHTMLElement\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002 document.querySelector('title').textContent = 'foo'"}