{"id":7252,"date":"2024-03-14T21:08:07","date_gmt":"2024-03-14T12:08:07","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/javascript%e3%81%a7prototype%e3%82%92%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%ab%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e3%81%8b%e3%80%82\/"},"modified":"2025-08-03T13:34:51","modified_gmt":"2025-08-03T04:34:51","slug":"javascript%e3%81%a7prototype%e3%82%92%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%ab%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e3%81%8b%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/javascript%e3%81%a7prototype%e3%82%92%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%ab%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e3%81%8b%e3%80%82\/","title":{"rendered":"JavaScript prototype\u3068\u306f\uff1f\u57fa\u672c\u3068\u5b9f\u8df5\u7684\u306a\u4f7f\u3044\u65b9"},"content":{"rendered":"<p>JavaScript\u306b\u304a\u3044\u3066\u3001\u5168\u3066\u306e\u95a2\u6570\u306fprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u3053\u308c\u3092\u4f7f\u3063\u3066\u95a2\u6570\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5c5e\u6027\u3084\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u95a2\u6570\u306eprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u95a2\u6570\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5c5e\u6027\u3084\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u5b9a\u7fa9\u3057\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">Person<\/span>(<span class=\"hljs-params\">name, age<\/span>) {\r\n  <span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">name<\/span> = name;\r\n  <span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">age<\/span> = age;\r\n}\r\n\r\n<span class=\"hljs-comment\">\/\/ \u4e3aPerson\u6784\u9020\u51fd\u6570\u7684\u5b9e\u4f8b\u5bf9\u8c61\u6dfb\u52a0\u4e00\u4e2agreet\u65b9\u6cd5<\/span>\r\n<span class=\"hljs-title class_\">Person<\/span>.<span class=\"hljs-property\"><span class=\"hljs-keyword\">prototype<\/span><\/span>.<span class=\"hljs-property\">greet<\/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-string\">\"Hello, my name is \"<\/span> + <span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">name<\/span>);\r\n};\r\n\r\n<span class=\"hljs-comment\">\/\/ \u521b\u5efaPerson\u6784\u9020\u51fd\u6570\u7684\u5b9e\u4f8b<\/span>\r\n<span class=\"hljs-keyword\">var<\/span> person1 = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Person<\/span>(<span class=\"hljs-string\">\"Alice\"<\/span>, <span class=\"hljs-number\">25<\/span>);\r\n<span class=\"hljs-keyword\">var<\/span> person2 = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Person<\/span>(<span class=\"hljs-string\">\"Bob\"<\/span>, <span class=\"hljs-number\">30<\/span>);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u8c03\u7528\u5b9e\u4f8b\u5bf9\u8c61\u7684greet\u65b9\u6cd5<\/span>\r\nperson1.<span class=\"hljs-title function_\">greet<\/span>(); <span class=\"hljs-comment\">\/\/\u8f93\u51fa\uff1aHello, my name is Alice<\/span>\r\nperson2.<span class=\"hljs-title function_\">greet<\/span>(); <span class=\"hljs-comment\">\/\/\u8f93\u51fa\uff1aHello, my name is Bob<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001Person\u3068\u3044\u3046\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3001\u305d\u306eprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3067\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306bgreet\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3057\u305f\u3002 Person\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u95a2\u6570\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3057\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306egreet\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u5404\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>prototype\u3092\u4f7f\u7528\u3057\u3066\u8ffd\u52a0\u3055\u308c\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u3084\u30e1\u30bd\u30c3\u30c9\u306f\u5171\u6709\u3055\u308c\u308b\u305f\u3081\u3001\u305d\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u3059\u3079\u3066\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u3053\u308c\u3089\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3084\u30e1\u30bd\u30c3\u30c9\u3092\u5171\u6709\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript\u306b\u304a\u3044\u3066\u3001\u5168\u3066\u306e\u95a2\u6570\u306fprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u3053\u308c\u3092\u4f7f\u3063\u3066\u95a2\u6570\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5c5e\u6027\u3084\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u95a2\u6570\u306eprototype\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u5024\u3092 [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[56,2604,102,2605],"class_list":["post-7252","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-javascript","tag-prototype","tag-102","tag-2605"],"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>JavaScript prototype\u3068\u306f\uff1f\u57fa\u672c\u3068\u5b9f\u8df5\u7684\u306a\u4f7f\u3044\u65b9 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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