{"id":1459,"date":"2025-05-31T08:30:02","date_gmt":"2025-05-30T23:30:02","guid":{"rendered":"https:\/\/itstudy365.com\/blog\/?p=1459"},"modified":"2025-05-31T08:30:02","modified_gmt":"2025-05-30T23:30:02","slug":"%e7%8f%be%e5%a0%b4%e3%81%a7%e4%bd%bf%e3%81%88%e3%82%8bchrome-devtools%e5%ae%9f%e8%b7%b5%e3%82%ac%e3%82%a4%e3%83%89-%e7%ac%ac7%e7%ab%a0%ef%bc%9aperformance%e3%83%91%e3%83%8d%e3%83%ab%e3%81%a7%e3%83%91","status":"publish","type":"post","link":"https:\/\/itstudy365.com\/blog\/2025\/05\/31\/%e7%8f%be%e5%a0%b4%e3%81%a7%e4%bd%bf%e3%81%88%e3%82%8bchrome-devtools%e5%ae%9f%e8%b7%b5%e3%82%ac%e3%82%a4%e3%83%89-%e7%ac%ac7%e7%ab%a0%ef%bc%9aperformance%e3%83%91%e3%83%8d%e3%83%ab%e3%81%a7%e3%83%91\/","title":{"rendered":"\u73fe\u5834\u3067\u4f7f\u3048\u308bChrome DevTools\u5b9f\u8df5\u30ac\u30a4\u30c9 \u7b2c7\u7ae0\uff1aPerformance\u30d1\u30cd\u30eb\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5206\u6790"},"content":{"rendered":"\n<button id=\"bb1\" type=\"button\" value=\"Play\" class=\"responsivevoice-button\" title=\"ResponsiveVoice Tap to Start\/Stop Speech\"><span>&#128266; Play<\/span><\/button>\n        <script>\n            bb1.onclick = function(){\n                if(responsiveVoice.isPlaying()){\n                    responsiveVoice.cancel();\n                }else{\n                    responsiveVoice.speak(\"\u30da\u30fc\u30b8\u8868\u793a\u304c\u91cd\u3044\u3001\u30b9\u30af\u30ed\u30fc\u30eb\u304c\u30ab\u30af\u3064\u304f\u3001JavaScript\u304c\u56fa\u307e\u308b\u2026\u3002\u305d\u3046\u3044\u3063\u305f\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u53ef\u8996\u5316\u3068\u5206\u6790\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002 Google Chrome\u306e\u300cPerformance\u300d\u30d1\u30cd\u30eb\u3067\u306f\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30fb\u30b9\u30af\u30ea\u30d7\u30c8\u51e6\u7406\u30fb\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u30da\u30a4\u30f3\u30c8\u306a\u3069\u306e\u4e00\u9023\u306e\u6d41\u308c\u3092\u8996\u899a\u7684\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u7ae0\u3067\u306f\u3001\u5b9f\u969b\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u901a\u3058\u3066\u3001\u30da\u30fc\u30b8\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u898b\u3064\u3051\u308b\u624b\u9806\u3092\u5b66\u3073\u307e\u3057\u3087\u3046\u3002 7.1 \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u691c\u51fa \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3068\u306f\u3001\u4e0d\u8981\u306b\u306a\u3063\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u89e3\u653e\u3055\u308c\u305a\u3001\u30e1\u30e2\u30ea\u3092\u4f7f\u3044\u7d9a\u3051\u3066\u3057\u307e\u3046\u73fe\u8c61\u3067\u3059\u3002\u9577\u6642\u9593\u30da\u30fc\u30b8\u3092\u958b\u3044\u3066\u3044\u308b\u3068\u91cd\u304f\u306a\u308b\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u304c\u5f90\u3005\u306b\u9045\u304f\u306a\u308b\u2026\u3068\u3044\u3063\u305f\u4e0d\u5177\u5408\u306e\u539f\u56e0\u306b\u306a\u308a\u5f97\u307e\u3059\u3002 Memory snapshot \u306e\u4f7f\u3044\u65b9\uff1a Memory \u30bf\u30d6\u3092\u958b\u3044\u3066\u300cSnapshot\u300d\u3092\u53d6\u5f97 GC\uff08\u30ac\u30fc\u30d9\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\uff09\u5f8c\u306b\u3082\u6d88\u3048\u306a\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8abf\u67fb Retainers \u3067\u3069\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u53c2\u7167\u3057\u7d9a\u3051\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d \ud83d\udca1 \u6d3b\u7528\u4f8b\uff1a SPA\uff08Single Page Application\uff09\u3067\u753b\u9762\u3092\u5207\u308a\u66ff\u3048\u3066\u3082\u524d\u306e\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u304c\u6b8b\u308a\u7d9a\u3051\u308b WebSocket\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u304c\u89e3\u653e\u3055\u308c\u305a\u84c4\u7a4d\u3059\u308b 7.2 \u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u306b\u3088\u308b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u78ba\u8a8d Performance \u30bf\u30d6\u3067\u8a18\u9332\u3092\u958b\u59cb\u3059\u308b\u3068\u3001\u30da\u30fc\u30b8\u306e\u63cf\u753b\u51e6\u7406\u5168\u4f53\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002 \u898b\u308b\u3079\u304d\u30dd\u30a4\u30f3\u30c8\uff1a Scripting\uff1aJavaScript\u306e\u5b9f\u884c\u6642\u9593 Rendering\uff1a\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u30b9\u30bf\u30a4\u30eb\u8a08\u7b97\u306a\u3069\u306e\u6642\u9593 Painting\uff1a\u5b9f\u969b\u306e\u753b\u9762\u63cf\u753b\u51e6\u7406 Idle\uff1a\u7a7a\u304d\u6642\u9593 \u30b7\u30ca\u30ea\u30aa\uff1a \u300cRecord\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u64cd\u4f5c\u3092\u518d\u73fe\uff08\u4f8b\uff1a\u30da\u30fc\u30b8\u30b9\u30af\u30ed\u30fc\u30eb\u3001\u30dc\u30bf\u30f3\u62bc\u4e0b\uff09 \u51e6\u7406\u304c\u56fa\u307e\u3063\u305f\u77ac\u9593\u3092\u30ba\u30fc\u30e0\u30a4\u30f3 \u9577\u6642\u9593\u3092\u5360\u3081\u3066\u3044\u308b\u51e6\u7406\u3084\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u30ea\u30d5\u30ed\u30fc\u3092\u7279\u5b9a \ud83d\udca1 \u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\uff1a \u300c\u30b9\u30af\u30ed\u30fc\u30eb\u304c\u91cd\u3044\u300d\u2192 \u30ea\u30b9\u30c8\u63cf\u753b\u3067\u6bce\u56de\u5168 DOM \u3092\u66f4\u65b0\u3057\u3066\u3044\u305f \u300c\u30af\u30ea\u30c3\u30af\u5f8c\u306e\u5fdc\u7b54\u304c\u9045\u3044\u300d\u2192 \u91cd\u3044\u540c\u671f\u51e6\u7406\u304c\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u3057\u3066\u3044\u305f 7.3 \u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\u8a2d\u5b9a\uff08CPU \/ \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5236\u9650\uff09 \u30ea\u30a2\u30eb\u30e6\u30fc\u30b6\u30fc\u306e\u74b0\u5883\u3067\u306f\u3001\u958b\u767a\u30de\u30b7\u30f3\u307b\u3069\u9ad8\u901f\u306aCPU\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u4f7f\u308f\u308c\u3066\u3044\u307e\u305b\u3093\u3002DevTools\u3067\u306f\u300c\u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\u6a5f\u80fd\u300d\u306b\u3088\u308a\u3001\u610f\u56f3\u7684\u306b\u30ea\u30bd\u30fc\u30b9\u3092\u5236\u9650\u3057\u3066\u52d5\u4f5c\u3092\u518d\u73fe\u30fb\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002 \u8a2d\u5b9a\u65b9\u6cd5\uff1a Performance \u307e\u305f\u306f Network \u30d1\u30cd\u30eb\u3067\u3001\u4e0a\u90e8\u306e\u300cThrottling\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u9078\u629e \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff1a No throttling\uff08\u5236\u9650\u306a\u3057\uff09 Fast 3G \/ Slow 3G CPU\uff1a 2x slow-down \/ 4x slow-down\uff08\u51e6\u7406\u901f\u5ea6\u3092\u843d\u3068\u3059\uff09 \u6d3b\u7528\u4f8b\uff1a \u30e2\u30d0\u30a4\u30eb\u901a\u4fe1\u74b0\u5883\u4e0b\u3067\u306e\u30da\u30fc\u30b8\u521d\u671f\u8868\u793a\u901f\u5ea6\u3092\u78ba\u8a8d \u9ad8\u8ca0\u8377\u30da\u30fc\u30b8\u3067\u306eCPU\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u518d\u73fe\u3057\u3001\u4f53\u611f\u901f\u5ea6\u3092\u6e2c\u5b9a \ud83e\uddd1\u200d\ud83d\udcbb \u5b9f\u8df5\u8ab2\u984c \u8ab2\u984c\uff1a\u753b\u50cf\u4ed8\u304d\u8a18\u4e8b\u30ea\u30b9\u30c8\u304c\u30b9\u30af\u30ed\u30fc\u30eb\u6642\u306b\u30ab\u30af\u3064\u304f\u554f\u984c\u3092\u8abf\u67fb\u30fb\u6539\u5584\u3059\u308b Performance \u30d1\u30cd\u30eb\u3067\u30b9\u30af\u30ed\u30fc\u30eb\u3092\u8a18\u9332 \u9577\u3044 Scripting \u3084 Rendering \u306e\u7b87\u6240\u3092\u7279\u5b9a \u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u3084 DOM \u306e\u518d\u63cf\u753b\u304c\u539f\u56e0\u304b\u78ba\u8a8d \u9045\u5ef6\u8aad\u307f\u8fbc\u307f\uff08lazy-loading\uff09\u3084 requestAnimationFrame \u306e\u6d3b\u7528\u306a\u3069\u6539\u5584\u6848\u3092\u691c\u8a0e \ud83d\udcdd \u307e\u3068\u3081 Memory\u30d1\u30cd\u30eb\uff1a\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u7279\u5b9a\u3057\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u52a3\u5316\u306e\u6839\u672c\u539f\u56e0\u3092\u767a\u898b Performance\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\uff1a\u30b9\u30af\u30ea\u30d7\u30c8\u30fb\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u63cf\u753b\u306e\u6d41\u308c\u3092\u53ef\u8996\u5316\u3057\u3066\u3001\u9045\u5ef6\u306e\u539f\u56e0\u3092\u5206\u6790 \u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\uff1a\u30e6\u30fc\u30b6\u30fc\u5b9f\u74b0\u5883\u3092\u518d\u73fe\u3057\u3001UX\u306e\u52a3\u5316\u3092\u672a\u7136\u306b\u9632\u3050 Performance\u30d1\u30cd\u30eb\u306f\u3001\u898b\u305f\u76ee\u3067\u306f\u5206\u304b\u3089\u306a\u3044\\\"\u91cd\u3055\\\"\u306e\u539f\u56e0\u3092\u79d1\u5b66\u7684\u306b\u7a81\u304d\u6b62\u3081\u308b\u9053\u5177\u3067\u3059\u3002\u5358\u306b\u300c\u9045\u3044\u300d\u3092\u300c\u901f\u304f\u3059\u308b\u300d\u305f\u3081\u306e\u6700\u521d\u306e\u4e00\u6b69\u3068\u3057\u3066\u3001\u5b9a\u91cf\u7684\u306a\u8996\u70b9\u3092\u990a\u3044\u307e\u3057\u3087\u3046\u3002\", \"Japanese Female\");\n                }\n            };\n        <\/script>\n    <\/p>\n\n\n\n<p>\u30da\u30fc\u30b8\u8868\u793a\u304c\u91cd\u3044\u3001\u30b9\u30af\u30ed\u30fc\u30eb\u304c\u30ab\u30af\u3064\u304f\u3001JavaScript\u304c\u56fa\u307e\u308b\u2026\u3002<br>\u305d\u3046\u3044\u3063\u305f\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001<strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u53ef\u8996\u5316\u3068\u5206\u6790\u304c\u4e0d\u53ef\u6b20<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>Google Chrome\u306e\u300cPerformance\u300d\u30d1\u30cd\u30eb\u3067\u306f\u3001<strong>\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30fb\u30b9\u30af\u30ea\u30d7\u30c8\u51e6\u7406\u30fb\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u30da\u30a4\u30f3\u30c8\u306a\u3069\u306e\u4e00\u9023\u306e\u6d41\u308c\u3092\u8996\u899a\u7684\u306b\u78ba\u8a8d<\/strong>\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u7ae0\u3067\u306f\u3001\u5b9f\u969b\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u901a\u3058\u3066\u3001\u30da\u30fc\u30b8\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u898b\u3064\u3051\u308b\u624b\u9806\u3092\u5b66\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">7.1 \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u691c\u51fa<\/h3>\n\n\n\n<p><strong>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3068\u306f<\/strong>\u3001\u4e0d\u8981\u306b\u306a\u3063\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u89e3\u653e\u3055\u308c\u305a\u3001\u30e1\u30e2\u30ea\u3092\u4f7f\u3044\u7d9a\u3051\u3066\u3057\u307e\u3046\u73fe\u8c61\u3067\u3059\u3002<br>\u9577\u6642\u9593\u30da\u30fc\u30b8\u3092\u958b\u3044\u3066\u3044\u308b\u3068\u91cd\u304f\u306a\u308b\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u304c\u5f90\u3005\u306b\u9045\u304f\u306a\u308b\u2026\u3068\u3044\u3063\u305f\u4e0d\u5177\u5408\u306e\u539f\u56e0\u306b\u306a\u308a\u5f97\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Memory snapshot \u306e\u4f7f\u3044\u65b9\uff1a<\/h4>\n\n\n\n<ol>\n<li><code>Memory<\/code> \u30bf\u30d6\u3092\u958b\u3044\u3066\u300cSnapshot\u300d\u3092\u53d6\u5f97<\/li>\n\n\n\n<li>GC\uff08\u30ac\u30fc\u30d9\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\uff09\u5f8c\u306b\u3082\u6d88\u3048\u306a\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8abf\u67fb<\/li>\n\n\n\n<li><code>Retainers<\/code> \u3067\u3069\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u53c2\u7167\u3057\u7d9a\u3051\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83d\udca1 \u6d3b\u7528\u4f8b\uff1a<\/h4>\n\n\n\n<ul>\n<li>SPA\uff08Single Page Application\uff09\u3067\u753b\u9762\u3092\u5207\u308a\u66ff\u3048\u3066\u3082\u524d\u306e\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u304c\u6b8b\u308a\u7d9a\u3051\u308b<\/li>\n\n\n\n<li>WebSocket\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u304c\u89e3\u653e\u3055\u308c\u305a\u84c4\u7a4d\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">7.2 \u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u306b\u3088\u308b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u78ba\u8a8d<\/h3>\n\n\n\n<p><code>Performance<\/code> \u30bf\u30d6\u3067\u8a18\u9332\u3092\u958b\u59cb\u3059\u308b\u3068\u3001<strong>\u30da\u30fc\u30b8\u306e\u63cf\u753b\u51e6\u7406\u5168\u4f53\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3<\/strong>\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u898b\u308b\u3079\u304d\u30dd\u30a4\u30f3\u30c8\uff1a<\/h4>\n\n\n\n<ul>\n<li><code>Scripting<\/code>\uff1aJavaScript\u306e\u5b9f\u884c\u6642\u9593<\/li>\n\n\n\n<li><code>Rendering<\/code>\uff1a\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u30b9\u30bf\u30a4\u30eb\u8a08\u7b97\u306a\u3069\u306e\u6642\u9593<\/li>\n\n\n\n<li><code>Painting<\/code>\uff1a\u5b9f\u969b\u306e\u753b\u9762\u63cf\u753b\u51e6\u7406<\/li>\n\n\n\n<li><code>Idle<\/code>\uff1a\u7a7a\u304d\u6642\u9593<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u30b7\u30ca\u30ea\u30aa\uff1a<\/h4>\n\n\n\n<ol>\n<li>\u300cRecord\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u64cd\u4f5c\u3092\u518d\u73fe\uff08\u4f8b\uff1a\u30da\u30fc\u30b8\u30b9\u30af\u30ed\u30fc\u30eb\u3001\u30dc\u30bf\u30f3\u62bc\u4e0b\uff09<\/li>\n\n\n\n<li>\u51e6\u7406\u304c\u56fa\u307e\u3063\u305f\u77ac\u9593\u3092\u30ba\u30fc\u30e0\u30a4\u30f3<\/li>\n\n\n\n<li>\u9577\u6642\u9593\u3092\u5360\u3081\u3066\u3044\u308b\u51e6\u7406\u3084\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u30ea\u30d5\u30ed\u30fc\u3092\u7279\u5b9a<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\ud83d\udca1 \u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\uff1a<\/h4>\n\n\n\n<ul>\n<li>\u300c\u30b9\u30af\u30ed\u30fc\u30eb\u304c\u91cd\u3044\u300d\u2192 \u30ea\u30b9\u30c8\u63cf\u753b\u3067\u6bce\u56de\u5168 DOM \u3092\u66f4\u65b0\u3057\u3066\u3044\u305f<\/li>\n\n\n\n<li>\u300c\u30af\u30ea\u30c3\u30af\u5f8c\u306e\u5fdc\u7b54\u304c\u9045\u3044\u300d\u2192 \u91cd\u3044\u540c\u671f\u51e6\u7406\u304c\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u3057\u3066\u3044\u305f<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">7.3 \u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\u8a2d\u5b9a\uff08CPU \/ \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5236\u9650\uff09<\/h3>\n\n\n\n<p>\u30ea\u30a2\u30eb\u30e6\u30fc\u30b6\u30fc\u306e\u74b0\u5883\u3067\u306f\u3001\u958b\u767a\u30de\u30b7\u30f3\u307b\u3069\u9ad8\u901f\u306aCPU\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u4f7f\u308f\u308c\u3066\u3044\u307e\u305b\u3093\u3002<br>DevTools\u3067\u306f\u300c\u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\u6a5f\u80fd\u300d\u306b\u3088\u308a\u3001<strong>\u610f\u56f3\u7684\u306b\u30ea\u30bd\u30fc\u30b9\u3092\u5236\u9650\u3057\u3066\u52d5\u4f5c\u3092\u518d\u73fe\u30fb\u78ba\u8a8d<\/strong>\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8a2d\u5b9a\u65b9\u6cd5\uff1a<\/h4>\n\n\n\n<ul>\n<li><code>Performance<\/code> \u307e\u305f\u306f <code>Network<\/code> \u30d1\u30cd\u30eb\u3067\u3001\u4e0a\u90e8\u306e\u300cThrottling\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u9078\u629e<\/li>\n\n\n\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff1a\n<ul>\n<li>No throttling\uff08\u5236\u9650\u306a\u3057\uff09<\/li>\n\n\n\n<li>Fast 3G \/ Slow 3G<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>CPU\uff1a\n<ul>\n<li>2x slow-down \/ 4x slow-down\uff08\u51e6\u7406\u901f\u5ea6\u3092\u843d\u3068\u3059\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u6d3b\u7528\u4f8b\uff1a<\/h4>\n\n\n\n<ul>\n<li>\u30e2\u30d0\u30a4\u30eb\u901a\u4fe1\u74b0\u5883\u4e0b\u3067\u306e\u30da\u30fc\u30b8\u521d\u671f\u8868\u793a\u901f\u5ea6\u3092\u78ba\u8a8d<\/li>\n\n\n\n<li>\u9ad8\u8ca0\u8377\u30da\u30fc\u30b8\u3067\u306eCPU\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u518d\u73fe\u3057\u3001\u4f53\u611f\u901f\u5ea6\u3092\u6e2c\u5b9a<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83e\uddd1\u200d\ud83d\udcbb \u5b9f\u8df5\u8ab2\u984c<\/h3>\n\n\n\n<p><strong>\u8ab2\u984c\uff1a\u753b\u50cf\u4ed8\u304d\u8a18\u4e8b\u30ea\u30b9\u30c8\u304c\u30b9\u30af\u30ed\u30fc\u30eb\u6642\u306b\u30ab\u30af\u3064\u304f\u554f\u984c\u3092\u8abf\u67fb\u30fb\u6539\u5584\u3059\u308b<\/strong><\/p>\n\n\n\n<ol>\n<li><code>Performance<\/code> \u30d1\u30cd\u30eb\u3067\u30b9\u30af\u30ed\u30fc\u30eb\u3092\u8a18\u9332<\/li>\n\n\n\n<li>\u9577\u3044 <code>Scripting<\/code> \u3084 <code>Rendering<\/code> \u306e\u7b87\u6240\u3092\u7279\u5b9a<\/li>\n\n\n\n<li>\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u3084 DOM \u306e\u518d\u63cf\u753b\u304c\u539f\u56e0\u304b\u78ba\u8a8d<\/li>\n\n\n\n<li>\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\uff08lazy-loading\uff09\u3084 <code>requestAnimationFrame<\/code> \u306e\u6d3b\u7528\u306a\u3069\u6539\u5584\u6848\u3092\u691c\u8a0e<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcdd \u307e\u3068\u3081<\/h3>\n\n\n\n<ul>\n<li><strong>Memory\u30d1\u30cd\u30eb<\/strong>\uff1a\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u7279\u5b9a\u3057\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u52a3\u5316\u306e\u6839\u672c\u539f\u56e0\u3092\u767a\u898b<\/li>\n\n\n\n<li><strong>Performance\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3<\/strong>\uff1a\u30b9\u30af\u30ea\u30d7\u30c8\u30fb\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u63cf\u753b\u306e\u6d41\u308c\u3092\u53ef\u8996\u5316\u3057\u3066\u3001\u9045\u5ef6\u306e\u539f\u56e0\u3092\u5206\u6790<\/li>\n\n\n\n<li><strong>\u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0<\/strong>\uff1a\u30e6\u30fc\u30b6\u30fc\u5b9f\u74b0\u5883\u3092\u518d\u73fe\u3057\u3001UX\u306e\u52a3\u5316\u3092\u672a\u7136\u306b\u9632\u3050<\/li>\n<\/ul>\n\n\n\n<p>Performance\u30d1\u30cd\u30eb\u306f\u3001<strong>\u898b\u305f\u76ee\u3067\u306f\u5206\u304b\u3089\u306a\u3044&#8221;\u91cd\u3055&#8221;\u306e\u539f\u56e0\u3092\u79d1\u5b66\u7684\u306b\u7a81\u304d\u6b62\u3081\u308b\u9053\u5177<\/strong>\u3067\u3059\u3002<br>\u5358\u306b\u300c\u9045\u3044\u300d\u3092\u300c\u901f\u304f\u3059\u308b\u300d\u305f\u3081\u306e\u6700\u521d\u306e\u4e00\u6b69\u3068\u3057\u3066\u3001\u5b9a\u91cf\u7684\u306a\u8996\u70b9\u3092\u990a\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53,43],"tags":[57],"_links":{"self":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1459"}],"collection":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/comments?post=1459"}],"version-history":[{"count":1,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1459\/revisions"}],"predecessor-version":[{"id":1460,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1459\/revisions\/1460"}],"wp:attachment":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/media?parent=1459"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/categories?post=1459"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/tags?post=1459"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}