{"id":4868,"date":"2023-09-28T22:09:23","date_gmt":"2023-09-28T13:09:23","guid":{"rendered":"http:\/\/attacktube.com\/?p=4868"},"modified":"2023-11-23T21:43:41","modified_gmt":"2023-11-23T12:43:41","slug":"%e3%80%90javascript%e3%80%91deep-copy%e3%83%87%e3%82%a3%e3%83%bc%e3%83%97%e3%82%b3%e3%83%94%e3%83%bc","status":"publish","type":"post","link":"https:\/\/attacktube.com\/?p=4868","title":{"rendered":"\u3010JavaScript\u3011Deep copy(\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc)\u3010\u4e2d\u7d1a\u8005\u3011"},"content":{"rendered":"\n<p>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30d4\u30fc\u5143\u3068\u30b3\u30d4\u30fc\u5148\u304c\u5b8c\u5168\u306b\u72ec\u7acb\u3057\u3066\u3044\u308b\u3082\u306e\u3092Deep copy(\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc)\u3068\u3044\u3046\u3002<br>Deep copy\u306e\u53cd\u5bfe\u304cShallow copy(\u30b7\u30e3\u30ed\u30fc\u30b3\u30d4\u30fc)\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<br>\n<script async=\"\" src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3461056110605997\" crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-3461056110605997\" data-ad-slot=\"3137443461\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n<br>\n\n\n\n<p>Deep copy\u3092\u8abf\u3079\u305f\u3051\u3069\u3001JavaScript\u306b\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092Deep copy\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u5b58\u5728\u3057\u306a\u3044\u3002<br>JSON.parse(JSON.stringify(\u30aa\u30d6\u30b8\u30a7\u30af\u30c8))\u3067Deep copy\u304c\u53ef\u80fd\u3067\u3042\u308b\u3002<br>\u305f\u3060\u3057\u3001\u3053\u306e\u65b9\u6cd5\u3067Deep copy\u53ef\u80fd\u306a\u306e\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092JSON\u6587\u5b57\u5217\u306b\u5909\u63db\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3060\u3051\u3067\u3042\u308b\u3002JSON\u6587\u5b57\u5217\u306b\u5909\u63db\u4e0d\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001Deep copy\u3092\u81ea\u5206\u3067\u5b9f\u88c5\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u304b\u306a\uff1f<br><br>Deep copy\u306e\u5fc5\u8981\u306a\u30b3\u30fc\u30c9\u306f\u3069\u3093\u306a\u3060\uff1f\u906d\u9047\u3057\u305f\u3053\u3068\u306a\u3044\u304b\u3089\u5206\u304b\u3089\u306a\u3044\u306a\u3002\u79c1\u306e\u7d4c\u9a13\u304c\u8db3\u308a\u3066\u3044\u306a\u3044\u304b\u3089\u3060\u306a\u3002\u307e\u3060\u3001Deep copy\u306e\u91cd\u8981\u6027\u306f\u898b\u3048\u3066\u3053\u306a\u3044\u3002Deep copy\u306e\u52c9\u5f37\u306f\u3053\u3053\u307e\u3067\u306b\u3057\u3066\u304a\u3053\u3046\u3002<br>Deep copy\u306e\u77e5\u8b58\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306f\u5f53\u5206\u306f\u5148\u306b\u306a\u308a\u305d\u3046\u3002<br><br>\u30072023\/11\/23(\u6728)\u8ffd\u8a18<br>StructuredClone()\u3067\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u304c\u3067\u304d\u308b\u3089\u3057\u3044\u3002<br>\u672c\u5f53\u304b\uff1f\u3068\u308a\u3042\u3048\u305a\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u3092\u4f7f\u3046\u5834\u9762\u304c\u4eca\u306e\u3068\u3053\u306a\u3057\u3001\u307e\u305f\u4eca\u5ea6\u52c9\u5f37\u3057\u3088\u3002<br><br><\/p>\n\n\n\n<p>Web Workers \u306f\u30d6\u30e9\u30a6\u30b6\u306e\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3068\u306f\u5225\u306e\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u30b9\u30ec\u30c3\u30c9\u3067 JavaScript \u3092\u5b9f\u884c\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3068\u306f\u7570\u306a\u308b\u30b9\u30ec\u30c3\u30c9\u3067\u5b9f\u884c\u3055\u308c\u308b\u305f\u3081\u3001\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3068\u306e\u30c7\u30fc\u30bf\u306e\u3084\u308a\u53d6\u308a\u306b\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u30d1\u30c3\u30b7\u30f3\u30b0\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002<br>StructuredClone() \u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8907\u88fd\u3059\u308b\u305f\u3081\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308a\u3001\u305d\u306e\u540d\u306e\u901a\u308a\u30af\u30ed\u30fc\u30f3\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Web Workers \u3067\u306f\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u30d1\u30c3\u30b7\u30f3\u30b0\u3092\u901a\u3058\u3066\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3068\u306e\u30c7\u30fc\u30bf\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u969b\u306b\u3001\u30c7\u30fc\u30bf\u3092\u30b3\u30d4\u30fc\u3057\u3066\u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001Web Workers \u304c\u5225\u30b9\u30ec\u30c3\u30c9\u3067\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001\u540c\u3058\u30e1\u30e2\u30ea\u7a7a\u9593\u3092\u5171\u6709\u3057\u3066\u3044\u306a\u3044\u305f\u3081\u3067\u3059\u3002<br>\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001Web Workers \u3067\u306f\u30c7\u30fc\u30bf\u3092\u8907\u88fd\u3059\u308b\u624b\u6bb5\u3068\u3057\u3066 StructuredClone() \u304c\u6d3b\u7528\u3055\u308c\u308b\u308f\u3051\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7570\u306a\u308b\u30b9\u30ec\u30c3\u30c9\u3067\u306e\u5b89\u5168\u306a\u30c7\u30fc\u30bf\u306e\u3084\u308a\u53d6\u308a\u304c\u5b9f\u73fe\u3055\u308c\u307e\u3059\u3002<br>\u300cJSON\u306f JavaScript \u306e\u30c7\u30fc\u30bf\u69cb\u9020\u306b\u985e\u4f3c\u3057\u3066\u3044\u308b\u305f\u3081\u3001JavaScript\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u304b\u3089\u6d3e\u751f\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u610f\u5473\u3067 &#8220;\u30b5\u30d6\u30bb\u30c3\u30c8&#8221; 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