{"id":3989,"date":"2021-02-25T12:12:25","date_gmt":"2021-02-25T03:12:25","guid":{"rendered":"https:\/\/fastcoding.jp\/blog\/?p=3989"},"modified":"2021-04-06T11:22:26","modified_gmt":"2021-04-06T02:22:26","slug":"lazyload","status":"publish","type":"post","link":"https:\/\/fastcoding.jp\/blog\/all\/info\/lazyload\/","title":{"rendered":"\u300cLazy Load\u300d\u3067\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b"},"content":{"rendered":"<div class=\"the_content\"><p>\u3053\u3093\u306b\u3061\u306f\u3002FASTCODING\u30c7\u30b6\u30a4\u30ca\u30fc\u306e\u4e03\u8ee2\u3073\u516b\u91cd\u5b50\u3067\u3059\u3002<br \/>\n\u5927\u91cf\u306e\u753b\u50cf\u3092\u8868\u793a\u3059\u308bWeb\u30da\u30fc\u30b8\u306f\u3001\u8868\u793a\u901f\u5ea6\u304c\u9045\u304f\u306a\u308a\u304c\u3061\u3067\u3059\u3002\u30da\u30fc\u30b8\u901f\u5ea6\u304c\u9045\u304f\u306a\u308b\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u91cd\u304f\u306a\u308b\u306e\u3067\u3001\u753b\u9762\u64cd\u4f5c\u306b\u652f\u969c\u304c\u51fa\u3066\u3001UI\u304c\u4f4e\u4e0b\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u5bfe\u51e6\u65b9\u6cd5\u3068\u3057\u3066\u3001CSS\u30b9\u30d7\u30e9\u30a4\u30c8\u3084Expires\u30d8\u30c3\u30c0\u30fc\u3092\u5229\u7528\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u306f\u300cLazy Load\uff08\u30ec\u30a4\u30b8\u30fc\u30ed\u30fc\u30c9\uff09\u300d\u3092\u5229\u7528\u3057\u3066\u3001\u753b\u50cf\u3092\u9045\u5ef6\u30ed\u30fc\u30c9\u3055\u305b\u308b\u4e8b\u3067\u3001\u30da\u30fc\u30b8\u30b9\u30d4\u30fc\u30c9\u3092\u6539\u5584\u3059\u308b\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<div class=\"table-of-contents\">\n<p class=\"head-ct\">\u76ee\u6b21<\/p>\n<ul>\n<li><a href=\"#no1\"><strong>\u753b\u50cf\u3092\u9045\u5ef6\u30ed\u30fc\u30c9\u3055\u305b\u308b\u7406\u7531<\/strong><\/a><\/li>\n<li><a href=\"#no2\"><strong>\u2460\u3000\u30cd\u30a4\u30c6\u30a3\u30d6Lazyload\u306e\u8a2d\u5b9a<\/strong><\/a><\/li>\n<li><a href=\"#no3\"><strong>\u2461\u3000Lazyload\u672a\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u3001JavaScript\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8a2d\u5b9a\u3002<\/strong><\/a>\n<ul>\n<li><a href=\"#no3-1\"><strong>script\u30bf\u30b0\u306e\u914d\u7f6e<\/strong><\/a><\/li>\n<li><a href=\"#no3-2\"><strong>img\u30bf\u30b0\u306b&#8221;lazyload&#8221;\u3092\u8ffd\u52a0<\/strong><\/a><\/li>\n<\/ul>\n<\/li>\n<li><a href=\"#no4\"><strong>\u2462 Lazyload\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306e\u5834\u5408\u3001JavaScript\u3092\u8aad\u307f\u8fbc\u307e\u305b\u306a\u3044\u3002<\/strong><\/a><\/li>\n<li><a href=\"#no5\"><strong>lazyload\u306e\u30b5\u30f3\u30d7\u30eb<\/strong><\/a><\/li>\n<li><a href=\"#no6\"><strong>\u307e\u3068\u3081<\/strong><\/a><\/li>\n<\/ul>\n<\/div>\n<p><br id=\"no1\" \/><\/p>\n<h2>\u753b\u50cf\u3092\u9045\u5ef6\u30ed\u30fc\u30c9\u3055\u305b\u308b\u7406\u7531<\/h2>\n<p>\u30da\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u77ac\u9593\u304b\u3089\u30d6\u30e9\u30a6\u30b6\u306f\u3001HTML\u306b\u542b\u307e\u308c\u308b\u5168\u3066\u306e\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002\u5168\u3066\u8aad\u307f\u8fbc\u3080\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u30d3\u30e5\u30fc\u30dd\u30fc\u30c8\u5185\u306b\u5b58\u5728\u3057\u306a\u3044\u753b\u50cf\uff08\u30e6\u30fc\u30b6\u30fc\u304c\u307b\u3068\u3093\u3069\u95b2\u89a7\u3057\u306a\u3044\u4e0b\u90e8\u306e\u753b\u50cf\uff09\u3067\u3082\u3001\u8aad\u307f\u8fbc\u3093\u3067\u3057\u307e\u3046\u306e\u3067\u3001\u5f53\u7136\u30d6\u30e9\u30a6\u30b6\u306f\u91cd\u304f\u306a\u308a\u307e\u3059\u3002<br \/>\n\u305d\u3053\u3067\u3001<span  style=\"font-weight:bold;font-size:16px;background-color: #ffff00;padding:5px 0;\">\u30d6\u30e9\u30a6\u30b6\u306e\u30d3\u30e5\u30fc\u30dd\u30fc\u30c8\u5185\u306b\u3042\u308b\u753b\u50cf\u306e\u307f\u3092\u8aad\u307f\u8fbc\u307f\u3057\u3001\u305d\u308c\u4ee5\u5916\u306b\u3042\u308b\u753b\u50cf\u306f\u30b9\u30af\u30ed\u30fc\u30eb\u4f4d\u7f6e\u306b\u5408\u308f\u305b\u3066\u30ed\u30fc\u30c9\u3055\u305b\u308b\u4e8b\u3067\u3001\u30da\u30fc\u30b8\u30b9\u30d4\u30fc\u30c9\u3092\u9ad8\u901f\u5316<\/span>\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u9045\u5ef6\u30ed\u30fc\u30c9\u306e\u65b9\u6cd5\u306f\uff12\u3064<\/h3>\n<p>\u9045\u5ef6\u30ed\u30fc\u30c9\u3055\u305b\u308b\u65b9\u6cd5\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u306e<span style=\"font-weight:bold; font-size:16px; color:#FF0000; \">\u30cd\u30a4\u30c6\u30a3\u30d6Lazyload\u8a2d\u5b9a<\/span>\u3068\u3001<span style=\"font-weight:bold; font-size:16px; color:#FF0000; \">JavaScript\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4f7f\u7528<\/span>\u306e\uff12\u3064\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n2021\u5e742\u6708\u73fe\u5728\u300172%\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u30cd\u30a4\u30c6\u30a3\u30d6\u3067\u9045\u5ef6\u30ed\u30fc\u30c9\uff08loading\u5c5e\u6027\uff09\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n<strong><a href=\"https:\/\/caniuse.com\/loading-lazy-attr\" rel=\"noopener noreferrer\" target=\"_blank\">loading\u5c5e\u6027\u306e\u30b5\u30dd\u30fc\u30c8\u72b6\u6cc1<\/a><\/strong><\/p>\n<p>\u73fe\u5728\u306e\u30b5\u30dd\u30fc\u30c8\u72b6\u6cc1\u3092\u8e0f\u307e\u3048\u3066\u3001\u4ee5\u4e0b\u306e\u30dd\u30a4\u30f3\u30c8\u3067\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\u3092\u8a2d\u5b9a\u3002<\/strong><\/li>\n<li><strong>Lazyload\u672a\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u3001JavaScript\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8a2d\u5b9a\u3002<\/strong><\/li>\n<li><strong>Lazyload\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306e\u5834\u5408\u3001JavaScript\u3092\u8aad\u307f\u8fbc\u307e\u305b\u306a\u3044\u3002<\/strong><\/li>\n<\/ol>\n<p>\u203b\u57fa\u672c\u7684\u306b\u4e0a\u8a18\u3067\u826f\u3044\u306e\u3067\u3059\u304c\u3001\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3067\u3001\u3053\u306e\u30d6\u30e9\u30a6\u30b6\u306e\u30cd\u30a4\u30c6\u30a3\u30d6lazyload\u6a5f\u80fd\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u753b\u50cf\u5468\u308a\u306e\u30b9\u30bf\u30a4\u30eb\u8a2d\u5b9a\uff08CSS\u8a2d\u5b9a\uff09\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\uff08\u30c7\u30b6\u30a4\u30f3\u306b\u5bc4\u308a\u307e\u3059\uff09<\/p>\n<p><br id=\"no2\" \/>\u3000\u3000<\/p>\n<h2>\u2460 \u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\u3092\u8a2d\u5b9a\u3002<\/h2>\n<p><span  style=\"font-weight:bold;font-size:16px;background-color: #ffff00;padding:5px 0;\"> loading=&#8221;lazy&#8221;\u3092\u66f8\u3044\u3066\u304a\u304f\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u3063\u3066\u9069\u5207\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u30ed\u30fc\u30c9<\/span>\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\r\n&lt;img \r\n    src=&quot;\/path\/sample.jpg&quot;\r\n    alt=&quot;description\uff08\u63a8\u5968\uff09&quot;\r\n    width=&quot;300&quot;\r\n    height=&quot;300&quot;\r\n    loading=&quot;lazy&quot;\r\n\/&gt;\r\n\r\n<\/pre>\n<p>loading\u5c5e\u6027\u3092\u5229\u7528\u3059\u308b\u4e8b\u3067\u3001\u30d6\u30e9\u30a6\u30b6\u306f\u30d3\u30e5\u30fc\u30dd\u30fc\u30c8\u5916\u306e\u753b\u50cf\u3084iframe\u3092\u30b9\u30af\u30ed\u30fc\u30eb\u4f4d\u7f6e\u306b\u5408\u308f\u305b\u3066\u8aad\u307f\u8fbc\u307f\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>loading\u5c5e\u6027\u306f3\u3064\u306e\u5024\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/p>\n<p class=\"text_box_blue\">\n<strong>lazy<\/strong>\uff1a\u9045\u5ef6\u30ed\u30fc\u30c9\u306b\u9069\u3057\u305f\u5024\u3067\u3059\u3002<br \/>\n<strong>eager<\/strong>\uff1a\u9045\u5ef6\u30ed\u30fc\u30c9\u306b\u306f\u9069\u3057\u3066\u307e\u305b\u3093\u3001\u3059\u3050\u306b\u30ed\u30fc\u30c9\u3059\u308b\u5024\u3067\u3059\u3002<br \/>\n<strong>auto<\/strong>\uff1a\u9045\u5ef6\u30ed\u30fc\u30c9\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u30d6\u30e9\u30a6\u30b6\u306b\u59d4\u306d\u307e\u3059\u3002<br \/>\n\u203bloading\u5c5e\u6027\u3092\u5b9a\u7fa9\u3057\u306a\u3044\u5834\u5408\u306f\u3001loading=auto\u3092\u5b9a\u7fa9\u3057\u305f\u5834\u5408\u3068\u540c\u3058\u3002\n<\/p>\n<p><br id=\"no3\" \/>\u3000\u3000<\/p>\n<h2>\u2461 Lazyload\u672a\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u3001JavaScript\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8a2d\u5b9a\u3002<\/h2>\n<p>\u5408\u308f\u305b\u3066\u3001Lazyload\u672a\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306e\u5834\u5408\u306b\u306f\u3001JavaScript\u30e9\u30a4\u30d6\u30e9\u30ea\u300clazysizes\u300d\u3092\u9069\u5fdc\u3055\u305b\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u304d\u307e\u3059\u3002jQuery\u3084Vue.js\u306a\u3069\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002\u30d3\u30e5\u30fc\u3067\u691c\u77e5\u3057\u305f\u8981\u7d20\u306bClass\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u80cc\u666f\u753b\u50cf\u3084::befor,::after\u306b\u3082LazyLoad\u3092\u884c\u3046\u4e8b\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<h3 id=\"no3-1\">script\u30bf\u30b0\u306e\u914d\u7f6e<\/h3>\n<p>\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\uff1a<a href=\"https:\/\/github.com\/aFarkas\/lazysizes\" rel=\"noopener noreferrer\" target=\"_blank\">aFarkas\/lazysizes<\/a><\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\r\n&lt;script src=&quot;https:\/\/cdn.jsdelivr.net\/npm\/lazysizes@5.2.2\/lazysizes-umd.min.js&quot; async&gt;&lt;\/script&gt;\r\n<\/pre>\n<h3 id=\"no3-2\">img\u30bf\u30b0\u306b&#8221;lazyload&#8221;\u3092\u8ffd\u52a0<\/h3>\n<ul>\n<li>class=&#8221;lazyload&#8221;\u3092\u8ffd\u52a0<\/li>\n<li>src\u5c5e\u6027\u3067\u306f\u306a\u304f\u3001data-src\u5c5e\u6027\u3067\u753b\u50cf\u30d1\u30b9\u3092\u6307\u5b9a\u3059\u308b<\/li>\n<li>src\u3092\u7a7a\u306b\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u30011x1px\u306e\u900f\u660e\u306a\u753b\u50cf\u306e\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u4f7f\u7528<\/li>\n<\/ul>\n<h4>\u57fa\u672c\u306e\u8a2d\u5b9a<\/h4>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\r\n&lt;img \r\n    src=&quot;\/path\/placeholder\/1px.png&quot;\r\n    data-src=&quot;\/path\/sample.jpg&quot;\r\n    alt=&quot;description\uff08\u63a8\u5968\uff09&quot;\r\n    width=&quot;300&quot;\r\n    height=&quot;300&quot;\r\n    class=&quot;lazyload&quot;\r\n    loading=&quot;lazy&quot;\r\n\/&gt;\r\n<\/pre>\n<h4>\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u3067picture\u30bf\u30b0\u3092\u4f7f\u3046\u5834\u5408<\/h4>\n<p>\u30fb\u300csrcset\u300d\u3092\u300cdata-srcset\u300d\u306b\u5909\u66f4\u3057\u307e\u3059\uff61<\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\r\n&lt;picture&gt;\r\n    &lt;source media=&quot;(max-width: 575px)&quot; data-srcset=&quot;\/path\/apple@575w.jpg&quot;&gt;\r\n    &lt;source media=&quot;(max-width: 768px)&quot; data-srcset=&quot;\/path\/apple@768w.jpg&quot;&gt;\r\n    &lt;source media=&quot;(max-width: 1200px)&quot; data-srcset=&quot;\/path\/apple@1200w.jpg&quot;&gt;\r\n    &lt;img \r\n       src=&quot;\/path\/placeholder\/1px.png&quot;\r\n       data-src=&quot;\/path\/sample.jpg&quot;\r\n       alt=&quot;description\uff08\u63a8\u5968\uff09&quot;\r\n       width=&quot;300&quot;\r\n       height=&quot;300&quot;\r\n       class=&quot;lazyload&quot;\r\n       loading=&quot;lazy&quot;\r\n     \/&gt;\r\n&lt;\/picture&gt;\r\n<\/pre>\n<h2 id=\"no4\">\u2462 Lazyload\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306e\u5834\u5408\u3001JavaScript\u3092\u8aad\u307f\u8fbc\u307e\u305b\u306a\u3044\u3002<\/h2>\n<p>JavaScript\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4f7f\u7528\u3057\u3066\u3044\u308b\u30d6\u30e9\u30a6\u30b6\u304c\u30cd\u30a4\u30c6\u30a3\u30d6Lazyload\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u51fa\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\r\n if (&quot;loading&quot; in HTMLImageElement.prototype) {\r\n      \/* \u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u5834\u5408 *\/\r\n } else {\r\n      \/*  \u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u5834\u5408 *\/\r\n }\r\n<\/pre>\n<h3>JavaScript\u306e\u6700\u7d42\u30b3\u30fc\u30c9<\/h3>\n<pre class=\"brush: xml; title: ; notranslate\" title=\"\">\r\n&lt;script&gt;\r\n\r\n    if (&quot;loading&quot; in HTMLImageElement.prototype) {\r\n        var images = document.querySelectorAll('img&#x5B;loading=&quot;lazy&quot;]');\r\n        var sources = document.querySelectorAll(&quot;source&#x5B;data-srcset]&quot;);\r\n        sources.forEach(function (source) {\r\n            source.srcset = source.dataset.srcset;\r\n        });\r\n        images.forEach(function (img) {\r\n            img.src = img.dataset.src;\r\n        });\r\n    } else {\r\n        var script = document.createElement(&quot;script&quot;);\r\n        script.src = &quot;\/link\/to\/lazyload.js&quot;;\r\n        document.body.appendChild(script);\r\n    }\r\n\r\n&lt;\/script&gt;\r\n<\/pre>\n<p><br id=\"no5\" \/>\u3000\u3000<\/p>\n<h2>lazyload\u306e\u30b5\u30f3\u30d7\u30eb<\/h2>\n<p><iframe height=\"265\" style=\"width: 100%;\" scrolling=\"no\" title=\"lazyload\" src=\"https:\/\/codepen.io\/fikgpnyd\/embed\/OJbXoBR?height=265&#038;theme-id=dark&#038;default-tab=html,result\" frameborder=\"no\" loading=\"lazy\" allowtransparency=\"true\" allowfullscreen=\"true\"><br \/>\n  See the Pen <a href='https:\/\/codepen.io\/fikgpnyd\/pen\/OJbXoBR'>lazyload<\/a> by \u91ce\u7530 \u82f1\u91cc<br \/>\n  (<a href='https:\/\/codepen.io\/fikgpnyd'>@fikgpnyd<\/a>) on <a href='https:\/\/codepen.io'>CodePen<\/a>.<br \/>\n<\/iframe><\/p>\n<p><br id=\"no6\" \/>\u3000\u3000<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u753b\u50cf\u306e\u9045\u5ef6\u30ed\u30fc\u30c9\u3092\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u305f\u3002\u30b9\u30de\u30db\u306a\u3069\u306e\u30b5\u30a4\u30c8\u306f\u3001\u7e26\u306b\u9577\u304f\u306a\u308b\u306e\u3067\u3053\u306e\u65b9\u6cd5\u306f\u30da\u30fc\u30b8\u30b9\u30d4\u30fc\u30c9\u5bfe\u7b56\u306b\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u304c\u3001\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30c7\u30b6\u30a4\u30f3\u306e\u5834\u5408\u306b\u3001\u30cd\u30a4\u30c6\u30a3\u30d6lazyload\u6a5f\u80fd\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u753b\u50cf\u5468\u308a\u306e\u30b9\u30bf\u30a4\u30eb\u8a2d\u5b9a\uff08CSS\u8a2d\u5b9a\uff09\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\uff08\u30c7\u30b6\u30a4\u30f3\u306b\u5bc4\u308a\u307e\u3059\uff09<br \/>\n\u3069\u3061\u3089\u306b\u3057\u3066\u3082\u3001Web\u30b5\u30a4\u30c8\u3092\u5236\u4f5c\u3059\u308b\u5834\u5408\u306f\u3001\u904b\u7528\u30ec\u30d9\u30eb\u307e\u3067\u3057\u3063\u304b\u308a\u3068\u610f\u8b58\u3057\u3066\u3001\u53d6\u308a\u5165\u308c\u308b\u3068\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u30da\u30fc\u30b8\u30b9\u30d4\u30fc\u30c9\u5bfe\u7b56\u3067\u304a\u56f0\u308a\u3067\u3059\u304b\uff1f<\/strong><\/p>\n<p><a href=\"https:\/\/fastcoding.jp\/pagespeed\/\" rel=\"noopener noreferrer\" target=\"_blank\">\u30d5\u30a1\u30b9\u30c8\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3067\u306fSEO\u306b\u5f37\u3044HTML\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u8a2d\u7acb\u5f53\u521d\u304b\u3089\u5b9f\u65bd\u3057\u3066\u304a\u308a\u3001PageSpeed Insights\u5bfe\u7b56\u306e\u7d4c\u9a13\u8c4a\u5bcc\u306a\u30c7\u30a3\u30ec\u30af\u30bf\u30fc\u304c\u591a\u6570\u5728\u7c4d\u3057\u3066\u304a\u308a\u307e\u3059\u3002\u65b0\u898f\u30b5\u30a4\u30c8\u306f\u3082\u3061\u308d\u3093\u3001\u65e2\u5b58\u30b5\u30a4\u30c8\u306eSEO\u5bfe\u7b56\u306b\u3082\u5fc5\u9808\u306e\u300c PageSpeed Insights\u5bfe\u7b56 \u300d\u306f\u662f\u975e\u5f0a\u793e\u306b\u3054\u76f8\u8ac7\u304f\u3060\u3055\u3044\u3002<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\u3002FASTCODING\u30c7\u30b6\u30a4\u30ca\u30fc\u306e\u4e03\u8ee2\u3073\u516b\u91cd\u5b50\u3067\u3059\u3002 \u5927\u91cf\u306e\u753b\u50cf\u3092\u8868\u793a\u3059\u308bWeb\u30da\u30fc\u30b8\u306f\u3001\u8868\u793a\u901f\u5ea6\u304c\u9045\u304f\u306a\u308a\u304c\u3061\u3067\u3059\u3002\u30da\u30fc\u30b8\u901f\u5ea6\u304c\u9045\u304f\u306a\u308b\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u91cd\u304f\u306a\u308b\u306e\u3067\u3001\u753b\u9762\u64cd\u4f5c\u306b\u652f\u969c\u304c\u51fa\u3066\u3001UI\u304c\u4f4e\u4e0b\u3057\u3066\u3057\u307e\u3044\u307e [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":4020,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[13,5,27,35],"tags":[33,22,28,31,250,256],"class_list":["post-3989","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-frontend","category-info","category-seo","category-35","tag-css","tag-javascript","tag-seo","tag-web","tag-250","tag-256"],"acf":[],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/fastcoding.jp\/blog\/wp-content\/uploads\/2021\/02\/T.png","jetpack_sharing_enabled":true,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/posts\/3989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/comments?post=3989"}],"version-history":[{"count":27,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/posts\/3989\/revisions"}],"predecessor-version":[{"id":3991,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/posts\/3989\/revisions\/3991"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/media\/4020"}],"wp:attachment":[{"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/media?parent=3989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/categories?post=3989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/tags?post=3989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}