{"id":128923,"date":"2024-03-25T08:24:47","date_gmt":"2024-03-24T23:24:47","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/%e3%82%8f%e3%81%9a%e3%81%8b10%e5%88%86%e3%81%a7javascript%e3%83%87%e3%82%b6%e3%82%a4%e3%83%b3%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3%e3%81%ae%e7%bf%92%e5%be%97\/"},"modified":"2024-04-04T11:35:25","modified_gmt":"2024-04-04T02:35:25","slug":"%e3%82%8f%e3%81%9a%e3%81%8b10%e5%88%86%e3%81%a7javascript%e3%83%87%e3%82%b6%e3%82%a4%e3%83%b3%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3%e3%81%ae%e7%bf%92%e5%be%97","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e3%82%8f%e3%81%9a%e3%81%8b10%e5%88%86%e3%81%a7javascript%e3%83%87%e3%82%b6%e3%82%a4%e3%83%b3%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3%e3%81%ae%e7%bf%92%e5%be%97\/","title":{"rendered":"\u308f\u305a\u304b10\u5206\u3067JavaScript\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u7fd2\u5f97"},"content":{"rendered":"<p>JavaScript\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u309210\u5206\u3067\u30de\u30b9\u30bf\u30fc\u3059\u308b\u306e\u306f\u96e3\u3057\u3044\u304c\u3001\u4ee3\u8868\u7684\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u7c21\u5358\u306b\u7d39\u4ecb\u3059\u308b\u3002<\/p>\n<ol>\n<li>\u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u30fb\u30d1\u30bf\u30fc\u30f3\uff08Singleton Pattern\uff09\uff1a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u305f\u3060\u4e00\u3064\u306e\u307f\u4f5c\u6210\u3055\u308c\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">var<\/span> <span class=\"hljs-title class_\">Singleton<\/span> = (<span class=\"hljs-keyword\">function<\/span>() {\r\n<span class=\"hljs-keyword\">var<\/span> instance;\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">createInstance<\/span>() {\r\n<span class=\"hljs-keyword\">var<\/span> object = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Object<\/span>(<span class=\"hljs-string\">\"I am the instance\"<\/span>);\r\n<span class=\"hljs-keyword\">return<\/span> object;\r\n}\r\n<span class=\"hljs-keyword\">return<\/span> {\r\n<span class=\"hljs-attr\">getInstance<\/span>: <span class=\"hljs-keyword\">function<\/span>() {\r\n<span class=\"hljs-keyword\">if<\/span>(!instance) {\r\ninstance = <span class=\"hljs-title function_\">createInstance<\/span>();\r\n}\r\n<span class=\"hljs-keyword\">return<\/span> instance;\r\n}\r\n};\r\n})();\r\n<span class=\"hljs-keyword\">var<\/span> instance1 = <span class=\"hljs-title class_\">Singleton<\/span>.<span class=\"hljs-title function_\">getInstance<\/span>();\r\n<span class=\"hljs-keyword\">var<\/span> instance2 = <span class=\"hljs-title class_\">Singleton<\/span>.<span class=\"hljs-title function_\">getInstance<\/span>();\r\n<span class=\"hljs-variable language_\">console<\/span>.<span class=\"hljs-title function_\">log<\/span>(instance1 === instance2); <span class=\"hljs-comment\">\/\/ \u8f93\u51fa true<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>\u5de5\u5834\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u4f7f\u308f\u306a\u3044\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">ShapeFactory<\/span>() {}\r\n<span class=\"hljs-title class_\">ShapeFactory<\/span>.<span class=\"hljs-property\"><span class=\"hljs-keyword\">prototype<\/span><\/span>.<span class=\"hljs-property\">createShape<\/span> = <span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">type<\/span>) {\r\n<span class=\"hljs-keyword\">if<\/span>(type === <span class=\"hljs-string\">\"circle\"<\/span>) {\r\n<span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Circle<\/span>();\r\n} <span class=\"hljs-keyword\">else<\/span> <span class=\"hljs-keyword\">if<\/span>(type === <span class=\"hljs-string\">\"rectangle\"<\/span>) {\r\n<span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Rectangle<\/span>();\r\n} <span class=\"hljs-keyword\">else<\/span> <span class=\"hljs-keyword\">if<\/span>(type === <span class=\"hljs-string\">\"triangle\"<\/span>) {\r\n<span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Triangle<\/span>();\r\n}\r\n};\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">Circle<\/span>() {\r\n<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">type<\/span> = <span class=\"hljs-string\">\"circle\"<\/span>;\r\n}\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">Rectangle<\/span>() {\r\n<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">type<\/span> = <span class=\"hljs-string\">\"rectangle\"<\/span>;\r\n}\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">Triangle<\/span>() {\r\n<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">type<\/span> = <span class=\"hljs-string\">\"triangle\"<\/span>;\r\n}\r\n<span class=\"hljs-keyword\">var<\/span> shapeFactory = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ShapeFactory<\/span>();\r\n<span class=\"hljs-keyword\">var<\/span> circle = shapeFactory.<span class=\"hljs-title function_\">createShape<\/span>(<span class=\"hljs-string\">\"circle\"<\/span>);\r\n<span class=\"hljs-variable language_\">console<\/span>.<span class=\"hljs-title function_\">log<\/span>(circle.<span class=\"hljs-property\">type<\/span>); <span class=\"hljs-comment\">\/\/ \u8f93\u51fa \"circle\"<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>\u30aa\u30d6\u30b6\u30fc\u30d0\u30fc\u30d1\u30bf\u30fc\u30f3\uff08Observer Pattern\uff09\uff1a\u30c8\u30d4\u30c3\u30af\uff08Subject\uff09\u304c\u76e3\u8996\u8005\uff08Observer\uff09\u306e\u30ea\u30b9\u30c8\u3092\u7dad\u6301\u3057\u3001\u30b9\u30c6\u30fc\u30c8\u304c\u5909\u5316\u3057\u305f\u3068\u304d\u306b\u901a\u77e5\u3059\u308b\u767a\u884c\u30fb\u8cfc\u8aad\u578b\u30d1\u30bf\u30fc\u30f3\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">Subject<\/span>() {\r\n<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">observers<\/span> = [];\r\n}\r\n<span class=\"hljs-title class_\">Subject<\/span>.<span class=\"hljs-property\"><span class=\"hljs-keyword\">prototype<\/span><\/span>.<span class=\"hljs-property\">addObserver<\/span> = <span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">observer<\/span>) {\r\n<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">observers<\/span>.<span class=\"hljs-title function_\">push<\/span>(observer);\r\n};\r\n<span class=\"hljs-title class_\">Subject<\/span>.<span class=\"hljs-property\"><span class=\"hljs-keyword\">prototype<\/span><\/span>.<span class=\"hljs-property\">removeObserver<\/span> = <span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">observer<\/span>) {\r\n<span class=\"hljs-keyword\">var<\/span> index = <span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">observers<\/span>.<span class=\"hljs-title function_\">indexOf<\/span>(observer);\r\n<span class=\"hljs-keyword\">if<\/span>(index !== -<span class=\"hljs-number\">1<\/span>) {\r\n<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">observers<\/span>.<span class=\"hljs-title function_\">splice<\/span>(index, <span class=\"hljs-number\">1<\/span>);\r\n}\r\n};\r\n<span class=\"hljs-title class_\">Subject<\/span>.<span class=\"hljs-property\"><span class=\"hljs-keyword\">prototype<\/span><\/span>.<span class=\"hljs-property\">notifyObservers<\/span> = <span class=\"hljs-keyword\">function<\/span>() {\r\n<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">observers<\/span>.<span class=\"hljs-title function_\">forEach<\/span>(<span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">observer<\/span>) {\r\nobserver.<span class=\"hljs-title function_\">update<\/span>();\r\n});\r\n};\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">Observer<\/span>(<span class=\"hljs-params\">name<\/span>) {\r\n<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">name<\/span> = name;\r\n}\r\n<span class=\"hljs-title class_\">Observer<\/span>.<span class=\"hljs-property\"><span class=\"hljs-keyword\">prototype<\/span><\/span>.<span class=\"hljs-property\">update<\/span> = <span class=\"hljs-keyword\">function<\/span>() {\r\n<span class=\"hljs-variable language_\">console<\/span>.<span class=\"hljs-title function_\">log<\/span>(<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">name<\/span> + <span class=\"hljs-string\">\" received update\"<\/span>);\r\n};\r\n<span class=\"hljs-keyword\">var<\/span> subject = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Subject<\/span>();\r\n<span class=\"hljs-keyword\">var<\/span> observer1 = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Observer<\/span>(<span class=\"hljs-string\">\"Observer 1\"<\/span>);\r\n<span class=\"hljs-keyword\">var<\/span> observer2 = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Observer<\/span>(<span class=\"hljs-string\">\"Observer 2\"<\/span>);\r\nsubject.<span class=\"hljs-title function_\">addObserver<\/span>(observer1);\r\nsubject.<span class=\"hljs-title function_\">addObserver<\/span>(observer2);\r\nsubject.<span class=\"hljs-title function_\">notifyObservers<\/span>(); <span class=\"hljs-comment\">\/\/ \u8f93\u51fa \"Observer 1 received update\" \u548c \"Observer 2 received update\"<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u3089\u306f\u5358\u306b\u3001JavaScript\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u306e\u5358\u7d14\u306a\u4f8b\u306e\u4e00\u90e8\u306b\u3059\u304e\u307e\u305b\u3093\u3002\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u3092\u5b8c\u5168\u306b\u7fd2\u5f97\u3059\u308b\u306b\u306f\u3001\u6df1\u3044\u5b66\u7fd2\u3068\u5b9f\u8df5\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u309210\u5206\u3067\u30de\u30b9\u30bf\u30fc\u3059\u308b\u306e\u306f\u96e3\u3057\u3044\u304c\u3001\u4ee3\u8868\u7684\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u7c21\u5358\u306b\u7d39\u4ecb\u3059\u308b\u3002 \u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u30fb\u30d1\u30bf\u30fc\u30f3\uff08Singleton Pattern\uff09\uff1a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u305f\u3060\u4e00\u3064\u306e\u307f\u4f5c\u6210\u3055\u308c\u3001\u30a2\u30d7\u30ea [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-128923","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>\u308f\u305a\u304b10\u5206\u3067JavaScript\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u7fd2\u5f97 - 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\/\u308f\u305a\u304b10\u5206\u3067javascript\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u7fd2\u5f97\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u308f\u305a\u304b10\u5206\u3067JavaScript\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u7fd2\u5f97\" \/>\n<meta property=\"og:description\" content=\"JavaScript\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u309210\u5206\u3067\u30de\u30b9\u30bf\u30fc\u3059\u308b\u306e\u306f\u96e3\u3057\u3044\u304c\u3001\u4ee3\u8868\u7684\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u7c21\u5358\u306b\u7d39\u4ecb\u3059\u308b\u3002 \u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u30fb\u30d1\u30bf\u30fc\u30f3\uff08Singleton Pattern\uff09\uff1a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u305f\u3060\u4e00\u3064\u306e\u307f\u4f5c\u6210\u3055\u308c\u3001\u30a2\u30d7\u30ea [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/\u308f\u305a\u304b10\u5206\u3067javascript\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u7fd2\u5f97\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-24T23:24:47+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-04T02:35:25+00:00\" \/>\n<meta name=\"author\" content=\"\u84ee, \u7ffc\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u84ee, \u7ffc\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" 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