{"id":642,"date":"2021-11-17T20:40:41","date_gmt":"2021-11-17T11:40:41","guid":{"rendered":"https:\/\/freefuntimes.com\/?p=642"},"modified":"2022-04-16T19:53:55","modified_gmt":"2022-04-16T10:53:55","slug":"cookie%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e5%88%9d%e5%9b%9e%e3%81%a8%e4%b8%80%e5%ae%9a%e6%9c%9f%e9%96%93%e7%b5%8c%e9%81%8e%e5%be%8c%e3%81%ab%e8%aa%ad%e3%81%bf%e8%be%bc%e3%81%be%e3%82%8c%e3%82%8b","status":"publish","type":"post","link":"https:\/\/freefuntimes.com\/?p=642","title":{"rendered":"cookie\u3092\u4f7f\u3063\u3066\u521d\u56de\u3068\u4e00\u5b9a\u671f\u9593\u7d4c\u904e\u5f8c\u306b\u8aad\u307f\u8fbc\u307e\u308c\u308b\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u753b\u9762\u3092JavaScript\u3067\u5b9f\u88c5\u3057\u3066\u307f\u308b\uff08\u5099\u5fd8\u9332\uff09"},"content":{"rendered":"\n<p>\u4eca\u56de\u306f<meta 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class=\"ez-toc-section\" id=\"html%e3%81%ae%e8%a8%98%e8%bf%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\"><\/span>html\u306e\u8a18\u8ff0\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;!DOCTYPE html&gt;\n&lt;html lang=&quot;ja&quot;&gt;\n&lt;head&gt;\n  &lt;meta charset=&quot;UTF-8&quot;&gt;\n  &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;\n  &lt;title&gt;\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0&lt;\/title&gt;\n  &lt;link rel=&quot;stylesheet&quot; href=&quot;..\/reset.css&quot;&gt;\n  &lt;link rel=&quot;stylesheet&quot; href=&quot;style.css&quot;&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n  &lt;div id=&quot;js_loading&quot; class=&quot;bl_loading&quot;&gt;\n    &lt;div class=&quot;bl_loadingCircle&quot;&gt;&lt;\/div&gt;\n    &lt;div class=&quot;bl_loadingText&quot;&gt;loading...&lt;\/div&gt;\n  &lt;\/div&gt;\n  &lt;main&gt;\n    &lt;section&gt;\n      &lt;div class=&quot;ly_inner&quot; id=&quot;menu1&quot;&gt;\n        &lt;h2&gt;menu1&lt;\/h2&gt;\n        &lt;div class=&quot;md_textblock&quot;&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n        &lt;\/div&gt;\n      &lt;\/div&gt;\n    &lt;\/section&gt;\n    &lt;section&gt;\n      &lt;div class=&quot;ly_inner&quot; id=&quot;menu2&quot;&gt;\n        &lt;h2&gt;menu2&lt;\/h2&gt;\n        &lt;div class=&quot;md_textblock&quot;&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n        &lt;\/div&gt;\n      &lt;\/div&gt;\n    &lt;\/section&gt;\n    &lt;section&gt;\n      &lt;div class=&quot;ly_inner&quot; id=&quot;menu3&quot;&gt;\n        &lt;h2&gt;menu3&lt;\/h2&gt;\n        &lt;div class=&quot;md_textblock&quot;&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n        &lt;\/div&gt;\n      &lt;\/div&gt;\n    &lt;\/section&gt;\n    &lt;section&gt;\n      &lt;div class=&quot;ly_inner&quot; id=&quot;menu4&quot;&gt;\n        &lt;h2&gt;menu4&lt;\/h2&gt;\n        &lt;div class=&quot;md_textblock&quot;&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n        &lt;\/div&gt;\n      &lt;\/div&gt;\n    &lt;\/section&gt;\n    &lt;section&gt;\n      &lt;div class=&quot;ly_inner&quot; id=&quot;menu5&quot;&gt;\n        &lt;h2&gt;menu5&lt;\/h2&gt;\n        &lt;div class=&quot;md_textblock&quot;&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n          &lt;p&gt;\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059&lt;\/p&gt;\n        &lt;\/div&gt;\n      &lt;\/div&gt;\n    &lt;\/section&gt;\n  &lt;\/main&gt;\n  &lt;script src=&quot;style.js&quot;&gt;&lt;\/script&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n<\/code><\/pre><\/div>\n\n\n\n<p>\u4eca\u56de\u306fhtml\u306e\u30bd\u30fc\u30b9\u306f\u4e0b\u8a18\u306e\u8a18\u4e8b\u3068\u540c\u69d8\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/freefuntimes.com\/?p=609\" target=\"_blank\">\u8a72\u5f53\u306e\u8a18\u4e8b\u306f\u3053\u3061\u3089<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"css%e3%81%ae%e8%a8%98%e8%bf%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\"><\/span>css\u306e\u8a18\u8ff0\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>@charset &quot;utf-8&quot;;\n\n\/* ==========================\n  \u521d\u671f\u8a2d\u5b9a\n========================== *\/\n*,\n*::before,\n*::after {\n  box-sizing: border-box;\n}\nimg {\n  width: 100%;\n}\n\n\/* ==========================\n  \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u753b\u9762\n========================== *\/\n.bl_loading {\n  position: fixed;\n  top: 0;\n  left: 0;\n  width: 100%;\n  height: 100%;\n  background-color: #444;\n  color: #fff;\n  font-size: 12px;\n  display: flex;\n  justify-content: center;\n  align-items: center;\n  flex-direction: column;\n  opacity: 1;\n  visibility: visible;\n  transition: 0.3s;\n}\n.bl_loading.loaded {\n  opacity: 0;\n  visibility: hidden;\n}\n@keyframes loading {\n  0% {\n    transform: rotate(0);\n  }\n  100% {\n    transform: rotate(360deg);\n  }\n}\n.bl_loadingCircle {\n  animation: 3s linear loading infinite;\n  height: 30px;\n  width: 30px;\n  border: 1px solid #fff;\n  border-top: 1px solid #aaa;\n  border-radius: 50%;\n  content: &quot;&quot;;\n  margin-bottom: 10px;\n}\n\n\/* ==========================\n  \u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u4e2d\u8eab\n========================== *\/\n.ly_inner {\n  width: 100%;\n  max-width: 1080px;\n  margin: 100px auto;\n  padding: 20px;\n  background-color: #ccc;\n}\n.ly_inner h2 {\n  font-size: 150%;\n  font-weight: bold;\n  margin-bottom: 30px;\n}\n.md_textblock &gt; * + * {\n  margin-top: 10px;\n}\n<\/code><\/pre><\/div>\n\n\n\n<p>CSS\u306e\u8a18\u8ff0\u3082\u3001html\u3067\u7d39\u4ecb\u3057\u305f\u8a18\u4e8b\u3068\u540c\u69d8\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"javascript%e3%81%ae%e8%a8%98%e8%bf%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\"><\/span><meta charset=\"utf-8\">JavaScript\u306e\u8a18\u8ff0\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>&#39;use strict&#39;;\n\n\/\/ \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u753b\u9762\nfunction loadedPage() {\n  const loadingID = document.getElementById(&quot;js_loading&quot;);\n  loadingID.classList.add(&quot;loaded&quot;);\n}\n\nif (document.cookie.indexOf(&#39;visited=first&#39;) === -1) {\n  document.cookie = &#39;visited=first path=\/&#39; + &#39;;max-age=30&#39;;\n  window.addEventListener(&#39;load&#39;, function () {\n    setTimeout(loadedPage, 2000);\n  });\n  setTimeout(loadedPage, 5000);\n} else {\n  loadedPage();\n}<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"documentcookie%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\"><\/span>document.cookie\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>cookie\u306b\u306fkey\u3068value\u3068\u3044\u3046\u6587\u5b57\u60c5\u5831\u304c\u4fdd\u5b58\u3055\u308c\u3066\u304a\u308a\u3001javascript\u3067cookie\u306b\u4efb\u610f\u306ekey\u3068value\u3092\u6307\u5b9a\u3057\u3066\u4fdd\u5b58\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<p>document.cookie\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u73fe\u5728\u306e\u30da\u30fc\u30b8\u4e0a\u3067\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5168\u3066\u306ecookie\u306e\u60c5\u5831\u304c\u3001key\u3068value\u304c\u30da\u30a2\u306b\u306a\u3063\u305f\u72b6\u614b\u3067\u8aad\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306f\u3001key\u3092visited\u3001value\u3092first\u306b\u6307\u5b9a\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3001\u4ed6\u306bcookie\u306f\u6307\u5b9a\u306f\u3057\u3066\u3044\u306a\u3044\u304c\u3001\u3082\u3057\u5225\u306ecookie\u3082\u6307\u5b9a\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u7279\u5b9a\u306ecookie\u3092\u53d6\u308a\u51fa\u3059\u5bfe\u5fdc\u3082\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308b\u3002\u4eca\u56de\u306f\u4f7f\u308f\u306a\u3044\u306e\u3067\u89e3\u8aac\u306f\u3057\u306a\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"indexof%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\"><\/span>indexOf\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>indexOf\u306f\u3001string\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4e2d\u3067\u4f7f\u3046ndexOf\u3092\u6307\u3057\u3066\u3044\u308b\u3002string\u306f\u6587\u5b57\u306e\u4e26\u3073\u306e\u3053\u3068\u3060\u3068\u601d\u3063\u3066\u3044\u305f\u3060\u3044\u3066\u826f\u3044\u3002\u3088\u304fnumber\u3068\u533a\u5225\u3059\u308b\u306e\u306b\u7528\u3044\u3089\u308c\u305f\u308a\u3059\u308b\u3002<\/p>\n\n\n\n<p>indexOf\u3092\u4f7f\u3046\u3068\u3001\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u306e\u4e00\u756a\u6700\u521d\u30920\u3068\u6570\u3048\u3066\u9806\u756a\u306b\u691c\u7d22\u3057\u3066\u3044\u304f\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u5024\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u5834\u5408\u306f-1\u3092\u8fd4\u3059\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3053\u3068\u3092\u5229\u7528\u3057\u3066\u3001if\u6587\u306b\u4e0b\u8a18\u306e\u6761\u4ef6\u3092\u6307\u5b9a\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>document.cookie.indexOf(&#39;visited=first&#39;) === -1<\/code><\/pre><\/div>\n\n\n\n<p>\u6700\u521d\u306b\u30da\u30fc\u30b8\u3092\u8aad\u307f\u8fbc\u3093\u3060\u6642\u70b9\u3067\u306f\u3001cookie\u306e\u5024\u304c\u5165\u3063\u3066\u3044\u306a\u3044\u306e\u3067\u3001indexOf\u306f-1\u3092\u8fd4\u3059\u3002<\/p>\n\n\n\n<p>\u3042\u3068\u306f\u3001\u3053\u306e\u4e2d\u306b\u6700\u521d\u306b\u8aad\u307f\u8fbc\u3093\u3060\u6642\u306e\u6761\u4ef6\u3092\u66f8\u3044\u3066\u3044\u3051\u3070\u3088\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"documentcookie%e3%81%a7key%e3%81%a8value%e3%80%81%e8%a9%b2%e5%bd%93url%e3%80%81%e7%a7%92%e6%95%b0%e3%81%ae%e6%8c%87%e5%ae%9a\"><\/span>document.cookie\u3067key\u3068value\u3001\u8a72\u5f53URL\u3001\u79d2\u6570\u306e\u6307\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>if (document.cookie.indexOf(&#39;visited=first&#39;) === -1) {\n  document.cookie = &#39;visited=first path=\/&#39; + &#39;;max-age=30&#39;;\n  window.addEventListener(&#39;load&#39;, function () {\n    setTimeout(loadedPage, 2000);\n  });\n  setTimeout(loadedPage, 5000);\n}<\/code><\/pre><\/div>\n\n\n\n<p>visited=first path=\/\u306f\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306a\u89e3\u91c8\u306b\u306a\u308b\u3002<\/p>\n\n\n\n<ul 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