{"id":50,"date":"2015-12-04T05:07:15","date_gmt":"2015-12-03T20:07:15","guid":{"rendered":"http:\/\/blog.srytk.com\/aquei\/?p=50"},"modified":"2015-12-04T05:07:15","modified_gmt":"2015-12-03T20:07:15","slug":"font-facecss%e3%81%aefont-display%e3%83%97%e3%83%ad%e3%83%91%e3%83%86%e3%82%a3%e3%81%8cchrome-canary%e3%81%ab%e6%9d%a5%e3%81%9f","status":"publish","type":"post","link":"https:\/\/blog.srytk.com\/aquei\/50.html","title":{"rendered":"@font-face(CSS)\u306efont-display\u30d7\u30ed\u30d1\u30c6\u30a3\u304cChrome Canary\u306b\u6765\u305f"},"content":{"rendered":"<p>Chrome Canary\u3067<a href=\"https:\/\/tabatkins.github.io\/specs\/css-font-display\/\">CSS\u306efont-display\u30d7\u30ed\u30d1\u30c6\u30a3<\/a>\u304c\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u305d\u3046\u3060\u3002<\/p>\n<p>font-display\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u306fCSS\u306e@font-face\u4e2d\u3067\u4f7f\u3046\u3053\u3068\u3067\u3001\u305d\u306e\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u308b\u9593\u30c6\u30ad\u30b9\u30c8\u304c\u3069\u306e\u3088\u3046\u306b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u308b\u304b\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u308b\u3002\u6b21\u306f\u4ed5\u69d8\u304b\u3089\u5f15\u7528\u3002<\/p>\n<blockquote><p>The font-display descriptor for @font-face determines how a font face is displayed, based on whether and when it is downloaded and ready to use.<\/p><\/blockquote>\n<p>\u9069\u5f53\u306b\u8a33\u3059\u308b\u3068\u3001<\/p>\n<blockquote><p>@font-face\u306efont-deisplay\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u306f\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u5229\u7528\u53ef\u80fd\u306b\u306a\u308b\u306a\u3069\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u306b\u57fa\u3065\u3044\u3066\u3001\u30d5\u30a9\u30f3\u30c8\u30d5\u30a7\u30a4\u30b9\u304c\u3069\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u308b\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u3082\u306e\u3067\u3042\u308b\u3002<\/p><\/blockquote>\n<p>\u308f\u304b\u308a\u3084\u3059\u304f\u8a00\u3044\u63db\u3048\u308b\u3068\u3001<a href=\"https:\/\/blog.srytk.com\/webfontloader-note\/2015\/09\/09\/fout%EF%BC%88%E3%83%95%E3%82%A9%E3%83%B3%E3%83%88%E5%88%87%E3%82%8A%E6%9B%BF%E3%81%88%E3%81%AE%E3%81%A1%E3%82%89%E3%81%A4%E3%81%8D%EF%BC%89%E3%82%92%E9%98%B2%E3%81%90\/\">FOUT<\/a>\u3092\u3069\u3046\u3059\u308b\u304b\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3060\u3002<br \/>\n<!--more--><\/p>\n<h1>\u3053\u308c\u3067\u8cb4\u65b9\u3082WebFontLoader\u3044\u3089\u305a\uff01\uff1f<\/h1>\n<p>\u4ee5\u4e0b\u306fexample\u3068\u3044\u3046\u30d5\u30a9\u30f3\u30c8\u30d5\u30a1\u30df\u30ea\u30fc\u306bfont-display:block\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u30b5\u30f3\u30d7\u30eb\u3060\u3002<\/p>\n<pre><code>\/* \u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8 example *\/\r\n@font-face {\r\n\tfont-family: 'example';\r\n\tfont-display: block;\r\n\tsrc: url(https:\/\/example.com\/webfont.woff2) format('woff2');\r\n}<\/code><\/pre>\n<p>\u3044\u3064\u3082\u306e@font-face\u306b\u305f\u3060\u4e00\u884c\u8ffd\u52a0\u3057\u305f\u3060\u3051\u3060\u304c\u3001\u3053\u308c\u3067font-display\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u3001\u73fe\u5728\u306eChrome\u3084Firefox\u306e\u69d8\u306a\u8868\u793a\u65b9\u6cd5\u306b\u306a\u308b\u3002\u3064\u307e\u308a\u3001<\/p>\n<ol>\n<li>\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u3044\u308b\u9593\u30c6\u30ad\u30b9\u30c8\u3092\u900f\u660e\u306b\u8868\u793a\u3059\u308b<\/li>\n<li>\u6570\u79d2\uff08\uff13\u79d2\u304c\u591a\u3044\uff09\u7d4c\u3063\u3066\u3082\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30d5\u30a9\u30f3\u30c8\u306b\u5207\u308a\u66ff\u3048\u3066\u3001\u900f\u660e\u72b6\u614b\u3092\u89e3\u9664\u3059\u308b\uff08\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8)<\/li>\n<li>\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u5b8c\u4e86\u3059\u308b\u3068\u3059\u3050\u306b\u900f\u660e\u72b6\u614b\u307e\u305f\u306f\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30d5\u30a9\u30f3\u30c8\u304b\u3089\u3001\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u3067\u306e\u8868\u793a\u306b\u5207\u308a\u66ff\u3048\u308b<\/li>\n<\/ol>\n<p>\u3053\u306e\u3088\u3046\u306a\u8868\u793a\u65b9\u6cd5\u3060\u3002<\/p>\n<p>\u4f8b\u3048\u3070IE\u3067\u306f\u900f\u660e\u72b6\u614b\u306b\u3059\u308b\u3053\u3068\u7121\u304f\u3059\u3050\u306b\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3057\u3001\u30d5\u30a9\u30f3\u30c8\u306e\u30ed\u30fc\u30c9\u5b8c\u4e86\u3067\u5207\u308a\u66ff\u3048\u308b\u4ed5\u69d8\u306a\u306e\u3067\u3001\u4e0a\u306e\u3088\u3046\u306a\u8868\u793a\u65b9\u6cd5\u306b\u3057\u3088\u3046\u3068\u3059\u308b\u3068<a href=\"https:\/\/github.com\/typekit\/webfontloader\">WebFontLoader<\/a>\u7b49\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u3063\u305f\u3002font-display\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u305d\u306e\u3088\u3046\u306a\u7169\u308f\u3057\u3055\u304b\u3089\u958b\u653e\u3055\u308c\u308b\u3068\u3044\u3046\u308f\u3051\u3060\u3002\u307e\u3042\u3001IE\u304cfont-display\u306b\u5bfe\u5fdc\u3059\u308b\u304b\u306f\u77e5\u3089\u306a\u3044\u304c\u3002<\/p>\n<figure style=\"width: 520px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/blog.srytk.com\/webfontloader-note\/wp-content\/uploads\/sites\/4\/2015\/09\/fout_ie11.gif\" alt=\"ie fouc\" width=\"520\" height=\"464\" \/><figcaption class=\"wp-caption-text\">IE\u3067FOUT\u304c\u8d77\u304d\u308b\u69d8\u5b50\u3002<a href=\"https:\/\/blog.srytk.com\/webfontloader-note\/2015\/09\/09\/fout%EF%BC%88%E3%83%95%E3%82%A9%E3%83%B3%E3%83%88%E5%88%87%E3%82%8A%E6%9B%BF%E3%81%88%E3%81%AE%E3%81%A1%E3%82%89%E3%81%A4%E3%81%8D%EF%BC%89%E3%82%92%E9%98%B2%E3%81%90\/\">\u4e0a\u8a18\u30ea\u30f3\u30af<\/a>\u3088\u308a\u3002<\/figcaption><\/figure>\n<p>\u3055\u3066\u3001\u4ed5\u69d8\u3092\u773a\u3081\u308b\u3068font-display\u306b\u306fblock\u4ee5\u5916\u306b\u3082\u8907\u6570\u306e\u5024\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u3060\u3002<\/p>\n<p><strong>auto<\/strong><\/p>\n<p style=\"padding-left: 30px;\">\u521d\u671f\u5024\u3002\u30d6\u30e9\u30a6\u30b6\u304c\u5b9a\u7fa9\u3057\u305f\u3082\u306e\u3002<\/p>\n<p><strong>block<\/strong><\/p>\n<p style=\"padding-left: 30px;\">\u4e0a\u8a18\u53c2\u7167<\/p>\n<p><strong>swap<\/strong><\/p>\n<p style=\"padding-left: 30px;\">\u3059\u3050\u306b\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30d5\u30a9\u30f3\u30c8\u3067\u63cf\u753b\u3057\u3001\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u304c\u30ed\u30fc\u30c9\u7d42\u4e86\u3057\u3060\u3044\u3001\u5207\u308a\u66ff\u3048\u308b\u3002\u73fe\u5728\u306eIE\u306e\u3088\u3046\u306a\u611f\u3058\u3002FOUT\u304c\u8d77\u304d\u308b\u3002<\/p>\n<p><strong>fallback<\/strong><\/p>\n<ol>\n<li>100ms\u4ee5\u4e0b\u7a0b\u5ea6\u306e\u3059\u3054\u304f\u77ed\u3044\u9593\u30c6\u30ad\u30b9\u30c8\u3092\u900f\u660e\u306b\u3059\u308b<\/li>\n<li>\u3053\u306e\u3059\u3054\u304f\u77ed\u3044\u6642\u9593\u306e\u9593\u306b\u30d5\u30a9\u30f3\u30c8\u306e\u30ed\u30fc\u30c9\u304c\u7d42\u308f\u3063\u3066\u3044\u306a\u3044\u5834\u5408\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30d5\u30a9\u30f3\u30c8\u3067\u8868\u793a\u3059\u308b<\/li>\n<li>\u30ed\u30fc\u30c9\u958b\u59cb\u304b\u3089\u6570\u79d2\u9593(3s\u3050\u3089\u3044\uff1f)\u306e\u9593\u306b\u30d5\u30a9\u30f3\u30c8\u306e\u30ed\u30fc\u30c9\u304c\u7d42\u308f\u308c\u3070\u305d\u306e\u30d5\u30a9\u30f3\u30c8\u306b\u5207\u308a\u66ff\u3048\u308b\u304c\u3001\u7d42\u308f\u3063\u3066\u3044\u306a\u3044\u306a\u3089\u305d\u306e\u307e\u307e\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30d5\u30a9\u30f3\u30c8\u3067\u8868\u793a\u3057\u7d9a\u3051\u308b<\/li>\n<\/ol>\n<p style=\"padding-left: 30px;\">\u30d5\u30a9\u30f3\u30c8\u306e\u30ed\u30fc\u30c9\u306b\u3042\u307e\u308a\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u3088\u3046\u306a\u3089\u8ae6\u3081\u308b\u3068\u8a00\u3063\u305f\u611f\u3058\u3060\u308d\u3046\u304b\u3002\u78ba\u304b\u306b\u65e2\u306b\u30c6\u30ad\u30b9\u30c8\u3092\u8aad\u307f\u59cb\u3081\u3066\u3044\u308b\u306e\u306b\u30d5\u30a9\u30f3\u30c8\u304c\u5207\u308a\u66ff\u308f\u308b\u306e\u306f\u30a6\u30b6\u3044\u3002\u6298\u8877\u7684\u3060\u304c\u3001\u672c\u6587\u306a\u3069\u306b\u306f\u3053\u308c\u304c\u826f\u3055\u305d\u3046\u3060\u3002<\/p>\n<p><strong>optional<\/strong><\/p>\n<p style=\"padding-left: 30px;\">100ms\u4ee5\u4e0b\u7a0b\u5ea6\u306e\u3059\u3054\u304f\u77ed\u3044\u9593\u30c6\u30ad\u30b9\u30c8\u3092\u900f\u660e\u306b\u3057\u3001\u305d\u306e\u9593\u306b\u30ed\u30fc\u30c9\u304c\u7d42\u308f\u308c\u3070\u305d\u306e\u30d5\u30a9\u30f3\u30c8\u3067\u8868\u793a\u3002\u7d42\u308f\u3089\u306a\u3051\u308c\u3070\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30d5\u30a9\u30f3\u30c8\u3067\u8868\u793a\u3002<\/p>\n<p style=\"padding-left: 30px;\">\u611f\u899a\u7684\u306b\u3001\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u3042\u308c\u3070\u305d\u3061\u3089\u3092\u5229\u7528\u3059\u308b\u611f\u3058\u304b\u3002\u4f7f\u3044\u6240\u304c\u96e3\u3057\u305d\u3046\u3060\u3002<\/p>\n<p>\u9593\u9055\u3063\u3066\u3044\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3057\u5909\u66f4\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u306e\u3067\u8a73\u3057\u304f\u306f\u4ed5\u69d8\u3092\u898b\u3066\u307b\u3057\u3044\u304c\u3001font-display\u3092\u4e0a\u624b\u304f\u4f7f\u3046\u3068\u3001\u65e5\u672c\u8a9e\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u306e\u3088\u3046\u306b\u30ed\u30fc\u30c9\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u3088\u3046\u306a\u5834\u5408\u306b\u6069\u6075\u304c\u3042\u308a\u305d\u3046\u3060\u3002<\/p>\n<p>\u3068\u3053\u308d\u3067\u3001<a href=\"https:\/\/plus.google.com\/+IlyaGrigorik\/posts\/a3Yn3jB4wjA\">Ilya Grigorik\u306e\u3068\u3066\u3082\u5206\u304b\u308a\u3084\u3059\u3044DEMO<\/a>\u304c\u3042\u3063\u305f\u3002\u4ee5\u4e0b\u304c\u305d\u306e\u30c7\u30e2\u306e\u30d3\u30c7\u30aa\u3060\u3002<\/p>\n<p><video src=\"https:\/\/www.webpagetest.org\/results\/video\/15\/12\/01\/2b1c12692e837ccf247daa2a3db121b0f365b9cc\/video.mp4\" poster=\"https:\/\/www.webpagetest.org\/results\/15\/12\/01\/PQ\/VA6\/video_1\/frame_0147.jpg\" preload=\"none\" loop=\"loop\" muted=\"\" controls=\"controls\" width=\"520\" height=\"432\"><\/video><\/p>\n<p>\u610f\u56f3\u7684\u306b\u9045\u3044\u56de\u7dda\u3067\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u3060\u304c\u3001\u305d\u308c\u305e\u308c\u306e\u5024\u3067\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3084\u30d5\u30a9\u30f3\u30c8\u306e\u5207\u308a\u66ff\u3048\u304c\u8d77\u304d\u3066\u3044\u308b\u306e\u304c\u3088\u304f\u5206\u304b\u308b\u3002\u73fe\u5728\u3001font-display\u306f\u5b9f\u9a13\u7684\u306a\u6a5f\u80fd\u3067\u306f\u3042\u308b\u304c\u3001\u4eca\u3084\u591a\u304f\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3067\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u304c\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u304b\u306a\u308a\u9700\u8981\u306f\u9ad8\u3044\u306f\u305a\u3002\u3088\u308a\u591a\u304f\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u306e\u30b5\u30dd\u30fc\u30c8\u304c\u671b\u307e\u308c\u308b\u3068\u3053\u308d\u3060\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chrome Canary\u3067CSS\u306efont-display\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u305d\u3046\u3060\u3002 font-display\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u306fCSS\u306e@font-face\u4e2d\u3067\u4f7f\u3046\u3053\u3068\u3067\u3001\u305d\u306e\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u308b 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