{"id":55659,"date":"2024-03-11T18:35:52","date_gmt":"2024-03-11T09:35:52","guid":{"rendered":"https:\/\/kinqsta.com\/jp\/?p=55659&post_type=knowledgebase&preview_id=55659"},"modified":"2025-10-02T04:45:24","modified_gmt":"2025-10-01T19:45:24","slug":"what-is-express-js","status":"publish","type":"post","link":"https:\/\/kinqsta.com\/jp\/blog\/what-is-express-js\/","title":{"rendered":"Express.js\u3068\u306f\u2500\u77e5\u3063\u3066\u304a\u304d\u305f\u3044\u57fa\u672c\u3092\u89e3\u8aac"},"content":{"rendered":"

Express.js\u306f\u3001Node.js<\/a>\u306e\u5927\u4eba\u6c17\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3042\u308a\u3001\u5e83\u7bc4\u306aJavaScript<\/a>\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306b\u6b20\u304b\u305b\u306a\u3044\u8981\u7d20\u3067\u3059\u3002<\/p>\n

\u30b7\u30f3\u30b0\u30eb\u30da\u30fc\u30b8\u3001\u30de\u30eb\u30c1\u30da\u30fc\u30b8\u3001\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3067\u304d\u3001Node.js\u3067\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3059\u308b\u4e0a\u3067\u306e\u5b9a\u756a\u306b\u3082\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3084\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u69cb\u7bc9\u306b\u4fbf\u5229\u306a\u3001\u30d5\u30ea\u30fc\u304b\u3064\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306eJavaScript<\/a>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b9\u30bf\u30c3\u30af\u306bMEVN\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u69cb\u6210\u3059\u308b\u306e\u304c\u3001\u4ee5\u4e0b\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002<\/p>\n

    \n
  1. MongoDB<\/strong>\uff1aMongoDB<\/a>\u306f\u6a19\u6e96\u7684\u306aNoSQL\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9<\/li>\n
  2. Express.js<\/strong>\uff1a\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af<\/li>\n
  3. Vue.j<\/strong>s\uff1a\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/a>\u69cb\u7bc9\u306e\u305f\u3081\u306eJavaScript\u30d7\u30ed\u30b0\u30ec\u30c3\u30b7\u30d6\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af<\/li>\n
  4. Node.js<\/strong>\uff1a\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u4f7f\u7528\u3055\u308c\u308bJavaScript\u30a8\u30f3\u30b8\u30f3<\/li>\n<\/ol>\n\n

    \u4eca\u56de\u306f\u3001Express.js\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u4e3b\u306a\u6a5f\u80fd\u3068\u3001\u6700\u521d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u69cb\u7bc9\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3054\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

    <\/div><\/kinsta-auto-toc>\n

    Express.js\u3068\u306f<\/h2>\n

    Express.js\u306f\u300cExpress\u300d\u3068\u3082\u547c\u3070\u308c\u3001\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3059\u308b\u305f\u3081\u306e\u5805\u7262\u306a\u6a5f\u80fd\u3068\u30c4\u30fc\u30eb\u3092\u63d0\u4f9b\u3059\u308b\u3001\u30df\u30cb\u30de\u30ea\u30b9\u30c8\u3067\u9ad8\u901f\u3001Sinatra\u30e9\u30a4\u30af\u306aNode.js\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af<\/a>\u3067\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u5fdc\u3058\u3066\u5f37\u529b\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3084\u30d1\u30fc\u30c4\u3092\u958b\u767a\u3057\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u62e1\u5f35\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \"Express.js\u306e\u30ed\u30b4\u3002\u30bf\u30a4\u30c8\u30eb\u306e\u300cExpress\u300d\u306e\u6587\u5b57\u304c\u7d30\u3044\u9ed2\u306e\u30bb\u30ea\u30d5\u30d5\u30a9\u30f3\u30c8\u3067\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u3002\"
    Express.js\u306e\u516c\u5f0f\u30ed\u30b4<\/figcaption><\/figure>\n

    \u3053\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u306f\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u30ec\u30b9\u30dd\u30f3\u30b9<\/a>\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3001\u304a\u3088\u3073\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u3068\u3044\u3063\u305f\u3001\u5927\u898f\u6a21\u306a\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u5bfe\u5fdc\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u69cb\u7bc9\u3068\u30c7\u30d7\u30ed\u30a4\u306e\u305f\u3081\u306e\u6a5f\u80fd\u304c\u8c4a\u5bcc\u306b\u76db\u308a\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

    \u307e\u305f\u3001Node Package Manager<\/a>\uff08NPM\uff09\u3068\u547c\u3070\u308c\u308b\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30c4\u30fc\u30eb\uff08CLI\uff09\u3082\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u958b\u767a\u6e08\u307f\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u5165\u624b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u958b\u767a\u8005\u306b\u306fDRY\uff08Don’t Repeat Yourself\uff09\u306e\u539f\u5247\u306b\u5f93\u3046\u3053\u3068\u3092\u5f37\u5236\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

    DRY\u306e\u539f\u5247\u3068\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30d1\u30bf\u30fc\u30f3\u306e\u7e70\u308a\u8fd4\u3057\u3092\u6e1b\u3089\u3057\u3001\u62bd\u8c61\u5316\u3067\u7f6e\u304d\u63db\u3048\u305f\u308a\u3001\u30c7\u30fc\u30bf\u306e\u6b63\u898f\u5316\u3092\u4f7f\u3063\u3066\u5197\u9577\u6027\u3092\u907f\u3051\u305f\u308a\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

    Express.js\u306f\u4f55\u306b\u4f7f\u308f\u308c\u308b\u306e\u304b<\/h2>\n

    Express.js\u306f\u3001JavaScript\/Node.js\u306e\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001API\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8<\/a>\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306a\u3069\u3001\u5e45\u5e83\u3044\u7528\u9014\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

    \u4ee5\u4e0b\u306f\u3001Express.js\u3067\u69cb\u7bc9\u3067\u304d\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4e00\u90e8\u3067\u3059\u3002<\/p>\n

    \u30b7\u30f3\u30b0\u30eb\u30da\u30fc\u30b8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/h3>\n

    \u30b7\u30f3\u30b0\u30eb\u30da\u30fc\u30b8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff08SPA\uff09\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u304c\u5358\u4e00\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30da\u30fc\u30b8\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u308b\u3001\u73fe\u4ee3\u7684\u306a\u69cb\u6210\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002Express.js\u306f\u3001SPA\u3092\u63a5\u7d9a\u3057\u3001\u4e00\u8cab\u3057\u3066\u30c7\u30fc\u30bf\u3092\u914d\u4fe1\u3059\u308bAPI\u3092\u69cb\u7bc9\u3059\u308b\u306e\u306b\u4fbf\u5229\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002\u30b7\u30f3\u30b0\u30eb\u30da\u30fc\u30b8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4f8b\u3068\u3057\u3066\u306f\u3001Gmail\u3001Google Maps\u3001Airbnb\u3001Netflix\u3001Pinterest\u3001PayPal\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002\u5404\u793e\u306f\u3001\u6d41\u52d5\u7684\u3067\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u306e\u69cb\u7bc9\u306bSPA\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

    \u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u30c4\u30fc\u30eb<\/h3>\n

    Express.js\u3092\u4f7f\u3048\u3070\u3001\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3<\/a>\u3092\u4fc3\u9032\u3059\u308b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u578b\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u7c21\u5358\u306b\u958b\u767a\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u307e\u305f\u3001Express.js\u306f\u30c1\u30e3\u30c3\u30c8\u3084\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u3088\u3046\u306a\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u306b\u3082\u4f7f\u7528\u3055\u308c\u3001\u5bb9\u6613\u306bWebSocket\u3092\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u7d71\u5408\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

    Express.js\u304c\u30d7\u30ed\u30bb\u30b9\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3068\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u306e\u90e8\u5206\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u3067\u3001\u958b\u767a\u8005\u306f\u30e9\u30a4\u30d6\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u30c4\u30fc\u30eb\u958b\u767a\u306e\u969b\u306b\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306b\u96c6\u4e2d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/h3>\n

    Netflix\u306e\u3088\u3046\u306a\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u8907\u96d1\u3067\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u30ec\u30a4\u30e4\u30fc\u304c\u591a\u304f\u306a\u308a\u304c\u3061\u3067\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u30a2\u30d7\u30ea\u3092\u958b\u767a\u3059\u308b\u306b\u306f\u3001\u975e\u540c\u671f\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u5f37\u56fa\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

    Express.js\u306f\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u5bfe\u5fdc\u3067\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u69cb\u7bc9\u3068\u30c7\u30d7\u30ed\u30a4\u306b\u3046\u3063\u3066\u3064\u3051\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002<\/p>\n

    \u30d5\u30a3\u30f3\u30c6\u30c3\u30af\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/h3>\n

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    Express.js\u306e\u4eba\u6c17\u306e\u7406\u7531<\/h2>\n

    \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306eExpress.js\u306e\u4f7f\u7528\u3092\u304a\u3059\u3059\u3081\u3059\u308b\u7406\u7531\u306f\u3044\u304f\u3064\u3082\u3042\u308a\u307e\u3059\u3002\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u652f\u3048\u308bI\/O\u306e\u9ad8\u901f\u5316\u304b\u3089\u3001\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u30b7\u30b9\u30c6\u30e0\u3068\u975e\u540c\u671f\u51e6\u7406\u307e\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001MVC\u69cb\u9020\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u64cd\u4f5c\u3084\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3092\u7c21\u7d20\u5316\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n

    Express.js\u306e\u5f37\u307f\u3092\u8a73\u3057\u304f\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

    \u67d4\u8edf\u3067\u30b9\u30e0\u30fc\u30ba<\/h3>\n

    Express.js\u306f\u975e\u5e38\u306b\u4f7f\u3044\u3084\u3059\u304f\u67d4\u8edf\u3067\u3001\u4ed6\u306eNode.js\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u6bd4\u3079\u3066\u3082\u9ad8\u901f\u3067\u3059\u3002\u30df\u30cb\u30de\u30ea\u30b9\u30c6\u30a3\u30c3\u30af\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3042\u308b\u305f\u3081\u3001\u8fc5\u901f\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u304c\u53ef\u80fd\u3067\u3001\u5927\u898f\u6a21\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u3055\u307e\u3056\u307e\u306a\u90e8\u5206\u3092\u4f7f\u3044\u3053\u306a\u3059\u30b9\u30c8\u30ec\u30b9\u304c\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u512a\u308c\u305f\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3001\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u30cd\u30b4\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u306a\u3069\u306e\u8c4a\u5bcc\u306a\u6a5f\u80fd\u3092\u3059\u3050\u306b\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

    MEAN\u30b9\u30bf\u30c3\u30af\u306e\u4e00\u90e8<\/h3>\n

    Express.js\u306f\u3001MERN\u3001MEAN\u306a\u3069\u306e\u30b9\u30bf\u30c3\u30af\uff08E\u3067\u8868\u3055\u308c\u308b\uff09\u3067\u9078\u629e\u3055\u308c\u308b\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002\u307e\u305f\u3001MEAN\u30b9\u30bf\u30c3\u30af<\/a>\u306e\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u306b\u304a\u3044\u3066\u3053\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u3044\u304b\u306b\u91cd\u8981\u3067\u3042\u308b\u304b\u3092\u793a\u3059\u4e8b\u5b9f\u3068\u3057\u3066\u3001\u305d\u306e\u4ed6\u306b\u3082\u3042\u3089\u3086\u308b\u30b9\u30bf\u30c3\u30af\u3084\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306b\u7c21\u5358\u306b\u7d71\u5408\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u3055\u3089\u306b\u3001\u5f93\u6765\u306eMySQL<\/a>\u3088\u308a\u3082\u5805\u7262\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3068\u52b9\u7387\u7684\u306b\u63a5\u7d9a\u3067\u304d\u3001\u5404\u30b9\u30bf\u30c3\u30af\u306b\u307e\u305f\u304c\u308b\u30b7\u30fc\u30e0\u30ec\u30b9\u306a\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u3001Express.js\u306fMEAN\u958b\u767a\u8005\u306e\u9593\u3067\u975e\u5e38\u306b\u4eba\u6c17\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

    \u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/h3>\n

    Express.js\u306f\u3001\u9577\u5e74\u306b\u308f\u305f\u308a\u975e\u5e38\u306b\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u9078\u629e\u80a2\u3068\u3057\u3066\u77e5\u3089\u308c\u3066\u304a\u308a\u3001\u591a\u304f\u306e\u5927\u4f01\u696d\u304c\u65e5\u3005\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067\u3053\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

    \u30e6\u30fc\u30b6\u30fc\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3057\u3001\u5927\u898f\u6a21\u306a\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3059\u308b\u969b\u306b\u3001\u8ffd\u52a0\u306e\u8a2d\u5b9a\u306f\u307b\u3068\u3093\u3069\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n

    \u512a\u308c\u305f\u30e2\u30b8\u30e5\u30fc\u30eb\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u3001\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9\u304c\u3042\u308a\u3001\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b\u306e\u306b\u6709\u7528\u3067\u3059\u3002<\/p>\n

    Google V8\u30a8\u30f3\u30b8\u30f3\u3092\u30b5\u30dd\u30fc\u30c8<\/h3>\n

    Express.js\u306f\u591a\u304f\u306eGoogle V8\u30a8\u30f3\u30b8\u30f3\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3001\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f01\u696d\u30ec\u30d9\u30eb\u3067\u69cb\u7bc9\u30fb\u30c7\u30d7\u30ed\u30a4\u3059\u308b\u306e\u306b\u975e\u5e38\u306b\u5f37\u529b\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002<\/p>\n

    Google V8\u30a8\u30f3\u30b8\u30f3\u306f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u9ad8\u6027\u80fdJavaScript\u304a\u3088\u3073WebAssembly\u30a8\u30f3\u30b8\u30f3\u3067\u3001\u8907\u96d1\u3067\u8ca0\u8377\u306e\u9ad8\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9ad8\u901f\u7a3c\u50cd\u3068\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002Google V8\u30a8\u30f3\u30b8\u30f3\u63a1\u7528\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u306e\u5927\u5e45\u306a\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30dd\u30fc\u30c8<\/h3>\n

    Node.js\u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u4e2d\u3067\u3082\u975e\u5e38\u306b\u4eba\u6c17\u306e\u3042\u308b\u9078\u629e\u80a2\u3067\u3042\u308b\u305f\u3081\u3001\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306b\u3088\u308b\u30b5\u30dd\u30fc\u30c8\u3001\u30ea\u30bd\u30fc\u30b9\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u6570\u304c\u591a\u304f\u3001\u3042\u3089\u3086\u308b\u958b\u767a\u9762\u3067\u306e\u8ab2\u984c\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002Google\u304b\u3089\u306e\u30b5\u30dd\u30fc\u30c8\u3082\u5145\u5b9f\u3057\u3066\u304a\u308a\u3001Node.js\u958b\u767a\u8005\u306e\u9593\u3067\u4eba\u6c17\u306e\u3042\u308b\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u3067\u3042\u308b\u305f\u3081\u3001\u958b\u767a\u8005\u306f\u62e1\u5f35\u53ef\u80fd\u306a\u30d1\u30c3\u30b1\u30fc\u30b8\u3084\u30ea\u30bd\u30fc\u30b9\u3092\u4f5c\u6210\u3057\u3001\u81ea\u5206\u81ea\u8eab\u3060\u3051\u3067\u306a\u304f\u3001Express.js\u3067\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3059\u308b\u3059\u3079\u3066\u306e\u4eba\u306e\u958b\u767a\u3092\u5bb9\u6613\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u5f37\u529b\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0<\/h3>\n

    Express.js\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306f\u5f37\u529b\u3067\u5805\u7262\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3092\u5099\u3048\u3066\u304a\u308a\u3001\u3053\u308c\u304c\u7279\u5b9a\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u7d4c\u7531\u3057\u305f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u3078\u306e\u5fdc\u7b54\u3092\u652f\u63f4\u3057\u307e\u3059\u3002<\/p>\n

    Express.js\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u30eb\u30fc\u30bf\u30fc\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u80a5\u5927\u5316\u3057\u305f\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3092\u7ba1\u7406\u306e\u5bb9\u6613\u306a\u30d5\u30a1\u30a4\u30eb\u306b\u5206\u5272\u3067\u304d\u307e\u3059\u3002<\/p>\n

    Express\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u8907\u6570\u306e\u30eb\u30fc\u30c8\u30921\u3064\u306e\u30d5\u30a9\u30eb\u30c0\/\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u69cb\u9020\u7ba1\u7406\u3092\u652f\u63f4\u3057\u307e\u3059\u3002<\/p>\n

    \u30eb\u30fc\u30bf\u30fc\u3067\u6a5f\u80fd\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u7e70\u308a\u8fd4\u3057\u3092\u907f\u3051\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u30df\u30c9\u30eb\u30a6\u30a7\u30a2<\/h3>\n

    Express.js\u306f\u3001\u30b7\u30fc\u30e0\u30ec\u30b9\u306a\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u3092\u5b9f\u73fe\u3059\u308b\u4e00\u9023\u306e\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n

    \u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u306f\u8a00\u3046\u306a\u308c\u3070\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8<\/a>\u304c\u30eb\u30fc\u30c8\u30cf\u30f3\u30c9\u30e9\u306b\u5230\u9054\u3059\u308b\u524d\u3084\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u3051\u53d6\u308b\u524d\u306b\u5b9f\u884c\u3055\u308c\u308b\u30b3\u30fc\u30c9\u3067\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u524d\u5f8c\u3067\u7279\u5b9a\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u884c\u3059\u308b\u6a5f\u80fd\u304c\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u3082\u305f\u3089\u3055\u308c\u307e\u3059\u3002<\/p>\n

    \u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u306e\u30d5\u30ed\u30fc\u306b\u5272\u308a\u8fbc\u3080\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u3092\u4f7f\u3063\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30ed\u30b0\u30a4\u30f3\u306b\u6210\u529f\u3057\u305f\u304b\u3001\u30ed\u30b0\u30a2\u30a6\u30c8\u306b\u6210\u529f\u3057\u305f\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

    Express.js\u306e\u4ed5\u7d44\u307f<\/h2>\n

    Express.js\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30fc\u30d0\u30fc\u30e2\u30c7\u30eb\u3092\u4f7f\u7528\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u4ed8\u3051\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n

    \u30e6\u30fc\u30b6\u30fc\u304c\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6<\/a>\u304b\u3089\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u5165\u529b\u3057\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\/\u30b5\u30fc\u30d0\u30fc\u306bHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u307e\u3059\uff08Express.js\u3092\u4f7f\u7528\u3057\u4f5c\u6210\u3055\u308c\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u591a\u304f\u304c\u30af\u30e9\u30a6\u30c9\u306b\u30db\u30b9\u30c8<\/a>\u3055\u308c\u3066\u3044\u307e\u3059\uff09\u3002<\/p>\n

    \u30b5\u30fc\u30d0\u30fc\u306f\u30eb\u30fc\u30c8\u306e1\u3064\u3092\u901a\u3057\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u53d6\u308a\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3055\u308c\u305f\u30eb\u30fc\u30c8\u306b\u30de\u30c3\u30c1\u3059\u308b\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3092\u4f7f\u3063\u3066\u3053\u308c\u3092\u51e6\u7406\u3057\u307e\u3059\u3002<\/p>\n

    \u51e6\u7406\u5f8c\u3001\u30b5\u30fc\u30d0\u30fc\u304cHTTP<\/a>\u3092\u4f7f\u3063\u3066\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n

    \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u8fd4\u3055\u308c\u308b\u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u3001\u6a19\u6e96\u7684\u306a\u30c6\u30ad\u30b9\u30c8\u3067\u3042\u3063\u305f\u308a\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u51e6\u7406\u3057\u7f8e\u3057\u3044\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306e\u52d5\u7684\u306aHTML\u30da\u30fc\u30b8\u3067\u3042\u3063\u305f\u308a\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9<\/a>\u958b\u767a\u8005\u304c\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306b\u60c5\u5831\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306b\u6271\u3046JSON\u30c7\u30fc\u30bf\u3067\u3042\u3063\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n

    Express.js\u3092\u4f7f\u3063\u3066\u3001\u7279\u5b9a\u306eURL<\/a>\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u306b\u57fa\u3065\u304d\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\u3059\u308b\u30b7\u30f3\u30d7\u30eb\u306a\u30b5\u30fc\u30d0\u30fc\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n

    const express = require('express')\nconst app = express()\nconst port = 4000\n\napp.get('\/', (request, response) => {\n  response.send('Testing Hello World!')\n})\n\napp.listen(port, () => {\n  console.log(`Test app listening at http:\/\/localhost:${port}`)\n})<\/code><\/pre>\n
    \u3053\u308c\u3060\u3051\u3067\u3001http:\/\/localhost:4000\/<\/a>\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\u3057\u3001”Testing Hello World!<\/strong>“\u3068\u3044\u3046\u30c6\u30ad\u30b9\u30c8\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3059\u30b7\u30f3\u30d7\u30eb\u306aExpress.js\u30b5\u30fc\u30d0\u30fc\u304c\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n
    Express.js\u30a2\u30d7\u30ea\u306e\u4f5c\u308a\u65b9<\/h2>\n
    \u3067\u306f\u3001Express.js 5.0\u3092\u4f7f\u3063\u3066\u3001\u5b9f\u969b\u306b\u30c7\u30e2\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea<\/strong>\u3092\u4f5c\u6210\u3057\u3001\u4ee5\u4e0b\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/a>\u3057\u307e\u3059\u3002<\/p>\n
    mkdir first-express-app\ncd first-express-app\n\nnpm install express@5.0.0-alpha.8 --save<\/code><\/pre>\n
    \u6b21\u306b\u3001\u30eb\u30fc\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306bindex.js\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\u307e\u3059\u3002<\/p>\n
    touch index.js<\/code><\/pre>\n
    \u4e0a\u8a18\u306e\u3088\u3046\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3057\u305f\u5f8c\u3001\u547c\u3073\u51fa\u3055\u308c\u308b\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306b\u5fdc\u3058\u3066\u30e6\u30fc\u30b6\u30fc\u306b\u8fd4\u3059\u3059\u3079\u3066\u306etodo\u3092\u683c\u7d0d\u3057\u305f\u914d\u5217todos<\/strong>\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002
    \nindex.js<\/code>\u30d5\u30a1\u30a4\u30eb\u306b\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
    const express = require(\"express\");\nconst app = express();\nconst port = 3000;\napp.listen(port, () => {\n  console.log(`Test app listening at http:\/\/localhost:${port}`)\n})\nconst todos = [\n  {\n    title: \"Todo 1\",\n    desc: \"\u4e00\u3064\u76ee\u306eTodo\",\n    completed: true,\n  },\n  {\n    title: \"Todo 2\",\n    desc: \"\u4e8c\u3064\u76ee\u306eTodo\",\n    completed: true,\n  },\n\n  {\n    title: \"Todo 3\",\n    desc: \"\u4e09\u3064\u76ee\u306eTodo\",\n    completed: true,\n  },\n\n  {\n    title: \"Todo 4\",\n    desc: \"\u56db\u3064\u76ee\u306eTodo\",\n    completed: true,\n  },\n\n  {\n    title: \"Todo 5\",\n    desc: \"\u4e94\u3064\u76ee\u306eTodo\",\n    completed: true,\n  },\n];\n\/\/ Data source ends here<\/code><\/pre>\n
    \u6b21\u306b\u3001\u30b5\u30fc\u30d0\u30fc\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306etodos<\/code>\u3092\u53d6\u5f97\u3059\u308b\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
    app.get(\"\/todos\", (request, response) => {\n  response.status(200).json(todos);\n});<\/code><\/pre>\n
    \u6b21\u306b\u3001todo\u306eID\u306b\u57fa\u3065\u3044\u3066<\/strong>\u3001\u4e00\u3064\u306etodo<\/strong>\u3092\u53d6\u5f97\u3059\u308b\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
    app.get(\"\/todos\/:id\", (request, response) => {\n  response\n    .status(200)\n    .json({ data: todos.find((todo) => todo.id === request.params.id) });\n});<\/code><\/pre>\n
    \u6b21\u306b\u3001\u65b0\u3057\u3044todo<\/code>\u3092\u4fdd\u5b58\u3059\u308b\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n
    app.post(\"\/todos\", (request, response) => {\n  todos.push(request.body);\n  response.status(201).json({ msg: \"Todo\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\" });\n});<\/code><\/pre>\n
    \u6b21\u306b\u3001\u65e2\u5b58\u306etodo<\/code>\u3092ID<\/code>\u3092\u7528\u3044\u3066\u7de8\u96c6\u3059\u308b\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n
    app.put(\"\/todos\/:id\", (request, response) => {\n  const todo = todos.find((todo) => todo.id === request.params.id);\n  if (todo) {\n    const { title, desc, completed } = request.body;\n    todo.title = title;\n    todo.desc = desc;\n    todo.completed = completed;\n    response.status(200).json({ msg: \"Todo\u3092\u7de8\u96c6\u3057\u307e\u3057\u305f\" });\n    return;\n  }\n  response.status(404).json({ msg: \"Todo\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\" });\n});<\/code><\/pre>\n
    \u6700\u5f8c\u306b\u3001ID<\/code>\u306b\u57fa\u3065\u3044\u3066todo<\/code>\u3092\u524a\u9664\u3059\u308b\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
    app.delete(\"\/todos\/:id\", (request, response) => {\n  const todoIndex = todos.findIndex((todo) => (todo.id = request.params.id));\n  if (todoIndex) {\n    todos.splice(todoIndex, 1);\n    response.status(200).json({ msg: \"Todo\u3092\u524a\u9664\u3057\u307e\u3057\u305f\" });\n  }\n  response.status(404).json({ msg: \"Todo\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\" });\n});<\/code><\/pre>\n
    \u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001Express.js\u3067DELETE\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u30d1\u30e9\u30e1\u30fc\u30bf\u3067todo ID\u3092\u53ce\u96c6\u3057\u3001\u4e00\u81f4\u3059\u308bID\u3092\u914d\u5217\u3067\u691c\u7d22\u3057\u3066\u524a\u9664\u3057\u307e\u3059\u3002<\/p>\n
    Express.js\u30a2\u30d7\u30ea\u306e\u30c6\u30b9\u30c8<\/h3>\n
    \u305d\u308c\u3067\u306f\u3001Express.js\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u30c6\u30b9\u30c8\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
    \u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u3001\u958b\u767a\u3057\u305fREST API\u3092Postman<\/a>\u3067\u30c6\u30b9\u30c8\u3057\u3001\u6b63\u3057\u3044\u30c7\u30fc\u30bf\u304c\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n
    node index.js<\/code><\/pre>\n
    \u516c\u5f0f\u30b5\u30a4\u30c8\u304b\u3089Postman\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3001\u4ee5\u4e0b\u306e\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3055\u3089\u306a\u308b\u5b66\u7fd2\u3068\u3057\u3066\u3001\u3053\u306e\u8a18\u4e8b\u3067\u3054\u7d39\u4ecb\u3057\u305f\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u4f7f\u3063\u3066\u3082\u3063\u3068\u591a\u304f\u306e\u6a5f\u80fd\u3092\u4f5c\u6210\u3057Express.js\u306e\u77e5\u8b58\u3092\u5e83\u3052\u3066\u307f\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n
    \"Express.js\u306eAPI\u3092\u30c6\u30b9\u30c8\u3057\u3066\u307f\u305f\u7d50\u679c\"
    Express.js\u306eAPI\u3092\u30c6\u30b9\u30c8\u3057\u3066\u307f\u305f\u7d50\u679c<\/figcaption><\/figure>\n\n
    \u307e\u3068\u3081<\/h2>\n
    Express.js\u306fNode.js\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306e\u4e2d\u3067\u3082\u5727\u5012\u7684\u306a\u4eba\u6c17\u3092\u8a87\u308b\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3042\u308a\u3001\u305d\u306e\u7406\u7531\u306f\u60f3\u50cf\u306b\u96e3\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u591a\u304f\u306e\u5f37\u307f\u3068\u7279\u5fb4\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n
    Express.js\u306f\u96e3\u3057\u3059\u304e\u305a\u3001\u30b7\u30f3\u30d7\u30eb\u306b\u4f7f\u3044\u59cb\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4e0d\u5fc5\u8981\u306a\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6a5f\u80fd\u3092\u62bd\u8c61\u5316\u3059\u308b\u3053\u3068\u3067\u67d4\u8edf\u6027\u304c\u78ba\u4fdd\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
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