{"id":129061,"date":"2024-03-25T08:50:22","date_gmt":"2024-03-24T23:50:22","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/js%e3%81%a7%e5%86%8d%e7%94%9f%e8%bf%9b%e5%ba%a6%e3%83%90%e3%83%bc%e3%82%92%e5%ae%9f%e8%a3%85\/"},"modified":"2024-03-27T01:15:50","modified_gmt":"2024-03-26T16:15:50","slug":"js%e3%81%a7%e5%86%8d%e7%94%9f%e8%bf%9b%e5%ba%a6%e3%83%90%e3%83%bc%e3%82%92%e5%ae%9f%e8%a3%85","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/js%e3%81%a7%e5%86%8d%e7%94%9f%e8%bf%9b%e5%ba%a6%e3%83%90%e3%83%bc%e3%82%92%e5%ae%9f%e8%a3%85\/","title":{"rendered":"JS\u3067\u518d\u751f\u8fdb\u5ea6\u30d0\u30fc\u3092\u5b9f\u88c5"},"content":{"rendered":"<p>\u4ee5\u4e0b\u306bJS\u3067\u9032\u6357\u72b6\u6cc1\u30d0\u30fc\u3092\u518d\u751f\u3059\u308b\u30b3\u30fc\u30c9\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30c8\u30ec\u30fc\u30c8\u306b\u8a00\u3063\u3066\u3001\u3042\u306a\u305f\u306f\u81ea\u5206\u304c\u597d\u304d\u306a\u3082\u306e\u3092\u98df\u3079\u308b\u3079\u304d\u306a\u3093\u3060\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">div<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"progress-bar\"<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">div<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"progress\"<\/span>&gt;<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">div<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">div<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>CSS\u306e\u307f\u3067\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u65e5\u672c\u8a9e\u306b\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-selector-id\">#progress-bar<\/span> {\r\n<span class=\"hljs-attribute\">width<\/span>: <span class=\"hljs-number\">300px<\/span>;\r\n<span class=\"hljs-attribute\">height<\/span>: <span class=\"hljs-number\">10px<\/span>;\r\n<span class=\"hljs-attribute\">background-color<\/span>: <span class=\"hljs-number\">#ccc<\/span>;\r\n}\r\n<span class=\"hljs-selector-id\">#progress<\/span> {\r\n<span class=\"hljs-attribute\">width<\/span>: <span class=\"hljs-number\">0<\/span>;\r\n<span class=\"hljs-attribute\">height<\/span>: <span class=\"hljs-number\">100%<\/span>;\r\n<span class=\"hljs-attribute\">background-color<\/span>: <span class=\"hljs-number\">#00f<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u306f1\u3064\u3060\u3051\u3067\u5341\u5206\u3067\u3059:JS:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u8fdb\u5ea6\u6761\u5143\u7d20<\/span>\r\n<span class=\"hljs-keyword\">var<\/span> progressBar = <span class=\"hljs-variable language_\">document<\/span>.<span class=\"hljs-title function_\">getElementById<\/span>(<span class=\"hljs-string\">'progress'<\/span>);\r\n<span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u97f3\u9891\u6216\u89c6\u9891\u5143\u7d20<\/span>\r\n<span class=\"hljs-keyword\">var<\/span> media = <span class=\"hljs-variable language_\">document<\/span>.<span class=\"hljs-title function_\">getElementById<\/span>(<span class=\"hljs-string\">'my-audio-or-video'<\/span>);\r\n<span class=\"hljs-comment\">\/\/ \u66f4\u65b0\u8fdb\u5ea6\u6761\u7684\u51fd\u6570<\/span>\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">updateProgressBar<\/span>() {\r\n<span class=\"hljs-comment\">\/\/ \u8ba1\u7b97\u5f53\u524d\u8fdb\u5ea6<\/span>\r\n<span class=\"hljs-keyword\">var<\/span> progress = (media.<span class=\"hljs-property\">currentTime<\/span> \/ media.<span class=\"hljs-property\">duration<\/span>) * <span class=\"hljs-number\">100<\/span>;\r\n<span class=\"hljs-comment\">\/\/ \u66f4\u65b0\u8fdb\u5ea6\u6761\u5bbd\u5ea6<\/span>\r\nprogressBar.<span class=\"hljs-property\">style<\/span>.<span class=\"hljs-property\">width<\/span> = progress + <span class=\"hljs-string\">'%'<\/span>;\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u76d1\u542c\u97f3\u9891\u6216\u89c6\u9891\u7684\u65f6\u95f4\u66f4\u65b0\u4e8b\u4ef6<\/span>\r\nmedia.<span class=\"hljs-title function_\">addEventListener<\/span>(<span class=\"hljs-string\">'timeupdate'<\/span>, updateProgressBar);\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u4f8b\u3067\u3001#my-audio-or-video \u306e\u90e8\u5206\u306f\u3001\u5b9f\u969b\u306b\u4f7f\u7528\u3057\u3066\u3044\u308b\u30aa\u30fc\u30c7\u30a3\u30aa\u30fb\u30d3\u30c7\u30aa\u8981\u7d20\u306e ID \u306b\u7f6e\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001\u9032\u6357\u72b6\u6cc1\u30d0\u30fc\u3092\u8868\u793a\u3059\u308b\u6a5f\u80fd\u306e\u307f\u304c\u5b9f\u88c5\u3055\u308c\u3066\u304a\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u64cd\u4f5c\u306b\u3088\u308b\u518d\u751f\u9032\u6357\u306e\u5236\u5fa1\u3068\u3044\u3063\u305f\u6a5f\u80fd\u306e\u8ffd\u52a0\u304c\u5fc5\u8981\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ee5\u4e0b\u306bJS\u3067\u9032\u6357\u72b6\u6cc1\u30d0\u30fc\u3092\u518d\u751f\u3059\u308b\u30b3\u30fc\u30c9\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002 \u30b9\u30c8\u30ec\u30fc\u30c8\u306b\u8a00\u3063\u3066\u3001\u3042\u306a\u305f\u306f\u81ea\u5206\u304c\u597d\u304d\u306a\u3082\u306e\u3092\u98df\u3079\u308b\u3079\u304d\u306a\u3093\u3060\u3002 &lt;div id=&#8221;progress-bar&#8221;&gt; &lt;div id=&#8221;progres [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-129061","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>JS\u3067\u518d\u751f\u8fdb\u5ea6\u30d0\u30fc\u3092\u5b9f\u88c5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/js\u3067\u518d\u751f\u8fdb\u5ea6\u30d0\u30fc\u3092\u5b9f\u88c5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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