From 2b9479acf0b10ccba478c84d77a4e23fd7add27f Mon Sep 17 00:00:00 2001 From: chelproc Date: Mon, 11 Aug 2025 11:22:44 +0900 Subject: [PATCH 1/8] =?UTF-8?q?Cookie=20=E3=81=AE=E7=AF=80=E3=81=AE?= =?UTF-8?q?=E6=9B=B8=E3=81=8D=E7=9B=B4=E3=81=97?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .vscode/settings.json | 5 +- .../_samples/simple-authentication/.gitignore | 5 + .../_samples/simple-authentication/main.mjs | 21 + .../simple-authentication/package-lock.json | 1359 +++++++++++++++++ .../simple-authentication/package.json | 13 + .../prisma/schema.prisma | 22 + .../simple-authentication/public/index.html | 13 + .../simple-authentication/public/script.js | 17 + docs/4-advanced/01-cookie/index.mdx | 14 +- 9 files changed, 1464 insertions(+), 5 deletions(-) create mode 100644 docs/4-advanced/01-cookie/_samples/simple-authentication/.gitignore create mode 100644 docs/4-advanced/01-cookie/_samples/simple-authentication/main.mjs create mode 100644 docs/4-advanced/01-cookie/_samples/simple-authentication/package-lock.json create mode 100644 docs/4-advanced/01-cookie/_samples/simple-authentication/package.json create mode 100644 docs/4-advanced/01-cookie/_samples/simple-authentication/prisma/schema.prisma create mode 100644 docs/4-advanced/01-cookie/_samples/simple-authentication/public/index.html create mode 100644 docs/4-advanced/01-cookie/_samples/simple-authentication/public/script.js diff --git a/.vscode/settings.json b/.vscode/settings.json index 65a196532..b926d99ed 100644 --- a/.vscode/settings.json +++ b/.vscode/settings.json @@ -1,3 +1,6 @@ { - "editor.defaultFormatter": "esbenp.prettier-vscode" + "editor.defaultFormatter": "esbenp.prettier-vscode", + "[prisma]": { + "editor.defaultFormatter": "Prisma.prisma" + } } diff --git a/docs/4-advanced/01-cookie/_samples/simple-authentication/.gitignore b/docs/4-advanced/01-cookie/_samples/simple-authentication/.gitignore new file mode 100644 index 000000000..9f62ec0b8 --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/simple-authentication/.gitignore @@ -0,0 +1,5 @@ +node_modules +# Keep environment variables out of version control +.env + +/generated/prisma diff --git a/docs/4-advanced/01-cookie/_samples/simple-authentication/main.mjs b/docs/4-advanced/01-cookie/_samples/simple-authentication/main.mjs new file mode 100644 index 000000000..460168195 --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/simple-authentication/main.mjs @@ -0,0 +1,21 @@ +import express from "express"; +import { PrismaClient } from "./generated/prisma/index.js"; + +const app = express(); +const client = new PrismaClient(); + +app.use(express.json()); +app.use(express.static("./public")); + +app.post("/login", async (request, response) => { + const user = await client.user.findUnique({ + where: { username: request.body.username }, + }); + if (!user || user.password !== request.body.password) { + response.sendStatus(401); + return; + } + response.send(`ようこそ、${user.username}さん!`); +}); + +app.listen(3000); diff --git a/docs/4-advanced/01-cookie/_samples/simple-authentication/package-lock.json b/docs/4-advanced/01-cookie/_samples/simple-authentication/package-lock.json new file mode 100644 index 000000000..6d6970ea1 --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/simple-authentication/package-lock.json @@ -0,0 +1,1359 @@ +{ + "name": "simple-authentication", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "simple-authentication", + "dependencies": { + "@prisma/client": "^6.13.0", + "express": "^5.1.0" + }, + "devDependencies": { + "prisma": "^6.13.0" + } + }, + "node_modules/@babel/code-frame": { + "version": "7.27.1", + "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.27.1.tgz", + "integrity": "sha512-cjQ7ZlQ0Mv3b47hABuTevyTuYN4i+loJKGeV9flcCgIK37cCXRh+L1bd3iBHlynerhQ7BhCkn2BPbQUL+rGqFg==", + "devOptional": true, + "dependencies": { + 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b/docs/4-advanced/01-cookie/_samples/simple-authentication/package.json new file mode 100644 index 000000000..d281ae41d --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/simple-authentication/package.json @@ -0,0 +1,13 @@ +{ + "name": "simple-authentication", + "scripts": { + "start": "node main.mjs" + }, + "dependencies": { + "@prisma/client": "^6.13.0", + "express": "^5.1.0" + }, + "devDependencies": { + "prisma": "^6.13.0" + } +} diff --git a/docs/4-advanced/01-cookie/_samples/simple-authentication/prisma/schema.prisma b/docs/4-advanced/01-cookie/_samples/simple-authentication/prisma/schema.prisma new file mode 100644 index 000000000..555eac6f8 --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/simple-authentication/prisma/schema.prisma @@ -0,0 +1,22 @@ +// This is your Prisma schema file, +// learn more about it in the docs: https://pris.ly/d/prisma-schema + +// Looking for ways to speed up your queries, or scale easily with your serverless or edge functions? +// Try Prisma Accelerate: https://pris.ly/cli/accelerate-init + +generator client { + provider = "prisma-client-js" + output = "../generated/prisma" +} + +datasource db { + provider = "postgresql" + url = env("DATABASE_URL") +} + +model User { + id Int @id @default(autoincrement()) + username String @unique + password String + name String +} diff --git a/docs/4-advanced/01-cookie/_samples/simple-authentication/public/index.html b/docs/4-advanced/01-cookie/_samples/simple-authentication/public/index.html new file mode 100644 index 000000000..153adecf1 --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/simple-authentication/public/index.html @@ -0,0 +1,13 @@ + + + + + ログイン + + +

ユーザー名:

+

パスワード:

+ + + + diff --git a/docs/4-advanced/01-cookie/_samples/simple-authentication/public/script.js b/docs/4-advanced/01-cookie/_samples/simple-authentication/public/script.js new file mode 100644 index 000000000..3eec9f65d --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/simple-authentication/public/script.js @@ -0,0 +1,17 @@ +document.getElementById("login-button").onclick = async () => { + const usernameInput = document.getElementById("username-input"); + const passwordInput = document.getElementById("password-input"); + const response = await fetch("/login", { + method: "POST", + headers: { "Content-Type": "application/json" }, + body: JSON.stringify({ + username: usernameInput.value, + password: passwordInput.value, + }), + }); + if (response.ok) { + alert(await response.text()); + } else { + alert("ログインに失敗しました"); + } +}; diff --git a/docs/4-advanced/01-cookie/index.mdx b/docs/4-advanced/01-cookie/index.mdx index ba8b5dcad..d872380ce 100644 --- a/docs/4-advanced/01-cookie/index.mdx +++ b/docs/4-advanced/01-cookie/index.mdx @@ -4,13 +4,19 @@ title: Cookieと認証(発展) import cookieCounterVideo from "./cookie-counter.mp4"; -## HTTPヘッダ +多くのWebアプリケーションは、利用者が本人であることを確認するための機能を備えています。この節では、Webアプリケーションにおける「ログイン」機能を実装するための、最も基本的な技術要素について学びます。 -HTTPにおけるリクエストとレスポンスには、**ヘッダ**と呼ばれるKey-Value型のデータ構造が毎回付加されています。Chromeの開発者ツールでの`Network`タブで確認できるので、確認してみましょう。 +:::danger +認証やセッション管理は、Webアプリケーションのセキュリティにおいて非常に重要な要素で、この節で学ぶ内容のみでは、実際のアプリケーション向けの実装としては不十分です。[Firebase Authentication](https://firebase.google.com/products/auth)や[Auth0](https://auth0.com/)などの外部サービスを用いることで、強固なセキュリティを手軽に実現できます。また、どうしても外部サービスを利用できない場合は、[Passsport.js](https://www.passportjs.org/)や、[Auth.js](https://authjs.dev/)などのライブラリを利用することを強く推奨します。 +::: -![HTTPヘッダ](./http-headers.png) +## IDとパスワードによる認証 -## Cookie +IDとパスワードによる認証は、Webアプリケーションにおいて最も一般的な認証方法です。アプリケーションの利用者は、ID(通常はメールアドレスやユーザー名)とパスワードを入力し、サーバーは、その組み合わせをデータベースに保存されているものと比較し、一致すれば認証が成功したと判断します。 + +## Cookieによるセッション管理 + +HTTPによる通信では、リクエストは互いに独立しており、 レスポンスヘッダに`Set-Cookie`ヘッダを含めることにより、次回以降のリクエストで、クライアントはそのデータをリクエストヘッダの`Cookie`ヘッダに入れて毎回送信します。この性質を利用することで、HTTPサーバーはクライアント毎に異なるサービスを提供できるようになります。 From b40a86a64f703e9d55bec0f08ed051e6ce4cb2c5 Mon Sep 17 00:00:00 2001 From: chelproc Date: Sat, 6 Sep 2025 20:45:07 +0900 Subject: [PATCH 2/8] update --- .../01-cookie/basic-flow.drawio.svg | 209 ++++++++++++++++++ docs/4-advanced/01-cookie/index.mdx | 8 +- 2 files changed, 215 insertions(+), 2 deletions(-) create mode 100644 docs/4-advanced/01-cookie/basic-flow.drawio.svg diff --git a/docs/4-advanced/01-cookie/basic-flow.drawio.svg b/docs/4-advanced/01-cookie/basic-flow.drawio.svg new file mode 100644 index 000000000..3c29a0bb7 --- /dev/null +++ b/docs/4-advanced/01-cookie/basic-flow.drawio.svg @@ -0,0 +1,209 @@ + + + + + + + + + + + + + +
+
+
+ クライアント +
+
+
+
+ + クライアント + +
+
+
+ + + + + + + +
+
+
+ サーバー +
+
+
+
+ + サーバー + +
+
+
+ + + + + + + + + + + + + + + + + + + + +
+
+
+ ID, パスワード +
+
+
+
+ + ID, パスワード + +
+
+
+ + + + + + + +
+
+
+ 証明書 +
+
+
+
+ + 証明書 + +
+
+
+ + + + + + + +
+
+
+ ユーザー情報1へのリクエスト +
+ ( + + 証明書付) + +
+
+
+
+
+ + ユーザー情報1へのリクエスト... + +
+
+
+ + + + + + + +
+
+
+ ユーザー情報1 +
+
+
+
+ + ユーザー情報1 + +
+
+
+ + + + + + + +
+
+
+ ユーザー情報2 +
+
+
+
+ + ユーザー情報2 + +
+
+
+ + + + + + + +
+
+
+ ユーザー情報2へのリクエスト +
+ ( + + 証明書付) + +
+
+
+
+
+ + ユーザー情報2へのリクエスト... + +
+
+
+
+ + + + + Text is not SVG - cannot display + + + +
\ No newline at end of file diff --git a/docs/4-advanced/01-cookie/index.mdx b/docs/4-advanced/01-cookie/index.mdx index d872380ce..97d647c65 100644 --- a/docs/4-advanced/01-cookie/index.mdx +++ b/docs/4-advanced/01-cookie/index.mdx @@ -14,9 +14,13 @@ import cookieCounterVideo from "./cookie-counter.mp4"; IDとパスワードによる認証は、Webアプリケーションにおいて最も一般的な認証方法です。アプリケーションの利用者は、ID(通常はメールアドレスやユーザー名)とパスワードを入力し、サーバーは、その組み合わせをデータベースに保存されているものと比較し、一致すれば認証が成功したと判断します。 -## Cookieによるセッション管理 +認証に成功するすると、サーバーはクライアントに対し、一時的な「証明書」を発行します。クライアントは、その証明書を次回以降のリクエストに含めることで、認証が成功していることをサーバーに示します。この証明書として、よく用いられるのが**Cookie**です。Cookieとは、ブラウザ内に保存される少量のデータで、一度保存されると、次回以降のリクエストに自動的に含まれるようになります。 -HTTPによる通信では、リクエストは互いに独立しており、 +![](./basic-flow.drawio.svg) + +## Cookieの利用 + +Cookieは、HTTPリクエストやレスポンスのヘッダを用いて送受信します。 レスポンスヘッダに`Set-Cookie`ヘッダを含めることにより、次回以降のリクエストで、クライアントはそのデータをリクエストヘッダの`Cookie`ヘッダに入れて毎回送信します。この性質を利用することで、HTTPサーバーはクライアント毎に異なるサービスを提供できるようになります。 From 206d05b6b7906b8fdb7b569cbbc62f34277cdf07 Mon Sep 17 00:00:00 2001 From: chelproc Date: Sat, 20 Sep 2025 08:28:13 +0900 Subject: [PATCH 3/8] =?UTF-8?q?Cookie=20=E3=81=AE=E5=88=A9=E7=94=A8?= =?UTF-8?q?=E3=82=BB=E3=82=AF=E3=82=B7=E3=83=A7=E3=83=B3=E3=82=92=E6=9B=B4?= =?UTF-8?q?=E6=96=B0?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../_samples/cookie-counter/.gitignore | 1 + .../_samples/cookie-counter/main.mjs | 16 + .../_samples/cookie-counter/package-lock.json | 859 ++++++++++++++++++ .../_samples/cookie-counter/package.json | 10 + .../01-cookie/basic-flow.drawio.svg | 144 +-- docs/4-advanced/01-cookie/index.mdx | 48 +- docs/4-advanced/01-cookie/saved-cookies.png | Bin 37361 -> 0 bytes docs/4-advanced/01-cookie/sent-cookies.png | Bin 113425 -> 0 bytes docs/4-advanced/01-cookie/yahoo-cookies.png | Bin 39318 -> 0 bytes 9 files changed, 944 insertions(+), 134 deletions(-) create mode 100644 docs/4-advanced/01-cookie/_samples/cookie-counter/.gitignore create mode 100644 docs/4-advanced/01-cookie/_samples/cookie-counter/main.mjs create mode 100644 docs/4-advanced/01-cookie/_samples/cookie-counter/package-lock.json create mode 100644 docs/4-advanced/01-cookie/_samples/cookie-counter/package.json delete mode 100644 docs/4-advanced/01-cookie/saved-cookies.png delete mode 100644 docs/4-advanced/01-cookie/sent-cookies.png delete mode 100644 docs/4-advanced/01-cookie/yahoo-cookies.png diff --git a/docs/4-advanced/01-cookie/_samples/cookie-counter/.gitignore b/docs/4-advanced/01-cookie/_samples/cookie-counter/.gitignore new file mode 100644 index 000000000..07e6e472c --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/cookie-counter/.gitignore @@ -0,0 +1 @@ +/node_modules diff --git a/docs/4-advanced/01-cookie/_samples/cookie-counter/main.mjs b/docs/4-advanced/01-cookie/_samples/cookie-counter/main.mjs new file mode 100644 index 000000000..ea034be07 --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/cookie-counter/main.mjs @@ -0,0 +1,16 @@ +import express from "express"; +import cookieParser from "cookie-parser"; + +const app = express(); +app.use(cookieParser()); + +app.get("/", (request, response) => { + // Cookieの値は文字列なので数値に変換が必要 + const count = Number.parseInt(request.cookies.count) || 0; + const newCount = count + 1; + // 変更後の値をレスポンスヘッダに乗せる + response.cookie("count", newCount.toString()); + response.send(`${newCount}回目のアクセスですね。`); +}); + +app.listen(3000); diff --git a/docs/4-advanced/01-cookie/_samples/cookie-counter/package-lock.json b/docs/4-advanced/01-cookie/_samples/cookie-counter/package-lock.json new file mode 100644 index 000000000..f553f64fe --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/cookie-counter/package-lock.json @@ -0,0 +1,859 @@ +{ + "name": "cookie-counter", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "cookie-counter", + "dependencies": { + "cookie-parser": "^1.4.7", + "express": "^5.1.0" + } + }, + "node_modules/accepts": { + "version": "2.0.0", + "resolved": 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a/docs/4-advanced/01-cookie/_samples/cookie-counter/package.json b/docs/4-advanced/01-cookie/_samples/cookie-counter/package.json new file mode 100644 index 000000000..addaeb03f --- /dev/null +++ b/docs/4-advanced/01-cookie/_samples/cookie-counter/package.json @@ -0,0 +1,10 @@ +{ + "name": "cookie-counter", + "scripts": { + "start": "node main.mjs" + }, + "dependencies": { + "cookie-parser": "^1.4.7", + "express": "^5.1.0" + } +} diff --git a/docs/4-advanced/01-cookie/basic-flow.drawio.svg b/docs/4-advanced/01-cookie/basic-flow.drawio.svg index 3c29a0bb7..6ea3c4312 100644 --- a/docs/4-advanced/01-cookie/basic-flow.drawio.svg +++ b/docs/4-advanced/01-cookie/basic-flow.drawio.svg @@ -1,8 +1,8 @@ - + - + @@ -13,13 +13,13 @@
-
+
クライアント
- + クライアント @@ -34,13 +34,13 @@
-
+
サーバー
- + サーバー @@ -63,138 +63,66 @@ - - - -
-
-
- ID, パスワード -
-
-
-
- - ID, パスワード - -
+ + + ID, パスワード +
- - - -
-
-
- 証明書 -
-
-
-
- - 証明書 - -
+ + + 証明書 +
- - - -
-
-
- ユーザー情報1へのリクエスト -
- ( - - 証明書付) - -
-
-
-
-
- - ユーザー情報1へのリクエスト... - -
+ + + ユーザー情報1へのリクエスト + + + (証明書付) +
- - - -
-
-
- ユーザー情報1 -
-
-
-
- - ユーザー情報1 - -
+ + + ユーザー情報1 +
- - - -
-
-
- ユーザー情報2 -
-
-
-
- - ユーザー情報2 - -
+ + + ユーザー情報2 +
- - - -
-
-
- ユーザー情報2へのリクエスト -
- ( - - 証明書付) - -
-
-
-
-
- - ユーザー情報2へのリクエスト... - -
+ + + ユーザー情報2へのリクエスト + + + (証明書付) +
diff --git a/docs/4-advanced/01-cookie/index.mdx b/docs/4-advanced/01-cookie/index.mdx index 97d647c65..2b6854ce5 100644 --- a/docs/4-advanced/01-cookie/index.mdx +++ b/docs/4-advanced/01-cookie/index.mdx @@ -14,39 +14,30 @@ import cookieCounterVideo from "./cookie-counter.mp4"; IDとパスワードによる認証は、Webアプリケーションにおいて最も一般的な認証方法です。アプリケーションの利用者は、ID(通常はメールアドレスやユーザー名)とパスワードを入力し、サーバーは、その組み合わせをデータベースに保存されているものと比較し、一致すれば認証が成功したと判断します。 -認証に成功するすると、サーバーはクライアントに対し、一時的な「証明書」を発行します。クライアントは、その証明書を次回以降のリクエストに含めることで、認証が成功していることをサーバーに示します。この証明書として、よく用いられるのが**Cookie**です。Cookieとは、ブラウザ内に保存される少量のデータで、一度保存されると、次回以降のリクエストに自動的に含まれるようになります。 +認証に成功すると、サーバーはクライアントに対し、一時的な「証明書」を発行します。クライアントは、その証明書を次回以降のリクエストに含めることで、認証が成功していることをサーバーに示します。サーバーは、その証明書の正当性を確認することで、リクエストが正規のユーザーからのものであることを判断します。 ![](./basic-flow.drawio.svg) ## Cookieの利用 -Cookieは、HTTPリクエストやレスポンスのヘッダを用いて送受信します。 +Webアプリケーションのクライアントが、サーバーから発行された証明書を保管しておく手段として、もっともよく用いられるのが**Cookie**です。Cookieは、ブラウザ内に保存される小さなデータで、文字列のキーと値のペアとして保存されます。 -レスポンスヘッダに`Set-Cookie`ヘッダを含めることにより、次回以降のリクエストで、クライアントはそのデータをリクエストヘッダの`Cookie`ヘッダに入れて毎回送信します。この性質を利用することで、HTTPサーバーはクライアント毎に異なるサービスを提供できるようになります。 +Cookieを操作するための最も基本的な方法は、HTTPリクエストやレスポンスのヘッダを用いて送受信することです。HTTPレスポンスヘッダに`Set-Cookie`ヘッダを含めることにより、次回以降のリクエストで、クライアントはそのデータを`Cookie`リクエストヘッダに入れて毎回送信します。例えば、 -Cookie自体もKey-Valueのデータ構造となっているので、`Set-Cookie`ヘッダを複数回送信することにより、複数のCookieを1つのレスポンスで送信することができます。例として、[Yahoo! Japanのウェブサイト](https://www.yahoo.co.jp/)にアクセスした際に、Yahoo! Japanが送信するCookieの中身を覗いてみましょう。 +- `Set-Cookie: name=tanaka` +- `Set-Cookie: age=20` -![Yahoo! JapanのCookie](./yahoo-cookies.png) +のようなHTTPレスポンスヘッダを受け取ったブラウザは、`name=tanaka`と`age=20`という2つのキーと値のペアをCookieとして保存します。そして、次回以降のリクエストでは、 -このレスポンスヘッダを受けて、ブラウザは次のようなCookieを保存します。 +- `Cookie: name=tanaka; age=20` -![保存されたCookie](./saved-cookies.png) +のようなヘッダがリクエストに含まれるようになります。 -ブラウザを更新することで、設定されたCookieが確かにリクエストヘッダの中に含まれて送信されていることがわかります。 +次の例は、アクセスした回数をCookieに保存し、アクセスのたびにその値を1増やして表示するプログラムです。アクセス回数はCookieに保存されており、サーバーはその値を通してアクセスされた回数を把握しています。 -![リクエストに付加されたCookie](./sent-cookies.png) +Expressを用いて`Set-Cookie`ヘッダをレスポンスに設定するには、[`express.Response#cookie`メソッド](https://expressjs.com/ja/api.html#res.cookie)メソッドを使用するのが一般的です。また、[cookie-parser](https://www.npmjs.com/package/cookie-parser)パッケージを使用すると、リクエストヘッダに含まれるCookieを簡単に取得できます。このパッケージは、`request.headers.cookie`を解析し、`request.cookies`プロパティにオブジェクト形式で格納します。 -## ExpressでCookieを利用する - -Expressを用いてレスポンスヘッダにCookieを付加するには、[`express.Response#cookie`メソッド](https://expressjs.com/ja/api.html#res.cookie)を利用します。また、クライアントからのリクエストの`Cookie`ヘッダを解析するためには、[cookie-parser](https://www.npmjs.com/package/cookie-parser)パッケージを利用します。 - -```shell -npm install cookie-parser -``` - -を実行して、パッケージをインストールしましょう。Webサーバーのプログラムは次のようになります。 - -```javascript title="main.mjs" +```javascript title="main.mjs" showLineNumbers import express from "express"; import cookieParser from "cookie-parser"; @@ -55,7 +46,7 @@ app.use(cookieParser()); app.get("/", (request, response) => { // Cookieの値は文字列なので数値に変換が必要 - const count = parseInt(request.cookies.count) || 0; + const count = Number.parseInt(request.cookies.count) || 0; const newCount = count + 1; // 変更後の値をレスポンスヘッダに乗せる response.cookie("count", newCount.toString()); @@ -65,13 +56,18 @@ app.get("/", (request, response) => { app.listen(3000); ``` -[`express.Request#cookies`プロパティ](https://expressjs.com/ja/api.html#req.cookies)には、ブラウザから送信されていたCookieがオブジェクト形式で保存されています。ブラウザで表示させると、更新ボタンが押されるたびに数値が増えていることがわかります。 - -