Learn 以下の文書内のリンクURLを正規化 (#2356)

- /en-US へのリンクを /ja へのリンクに修正
- /ja が付いていないものに /ja を付加
- MDN内のリンクが完全URLの場合、 /ja/docs からのURLに修正

13 files changed, 41 insertions, 41 deletions

diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/author_detail_page/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/author_detail_page/index.html
index 5c4acc7193..6598ed7e3d 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/author_detail_page/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/author_detail_page/index.html
@@ -84,6 +84,6 @@ block content
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to final subarticle of part 5 : <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/BookInstance_detail_page_and_challenge">BookInstance detail page and challenge</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to final subarticle of part 5 : <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/BookInstance_detail_page_and_challenge">BookInstance detail page and challenge</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/author_list_page/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/author_list_page/index.html
index f738902bfb..363c25ea64 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/author_list_page/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/author_list_page/index.html
@@ -53,12 +53,12 @@ block content
 <p><img alt="Author List Page - Express Local Library site" src="https://mdn.mozillademos.org/files/14468/LocalLibary_Express_Author_List.png" style="display: block; height: 453px; margin: 0px auto; width: 1200px;"></p>
 
 <div class="note">
-<p><strong>Note:</strong> The appearance of the author <em>lifespan </em>dates is ugly! You can improve this using the <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data#date_formatting">same approach</a> as we used for the <code>BookInstance</code> list (adding the virtual property for the lifespan to the <code>Author</code> model). This time, however, there are missing dates, and references to nonexistent properties are ignored unless strict mode is in effect. <code>moment()</code> returns the current time, and you don't want missing dates to be formatted as if they were today. One way to deal with this is to define the body of the function that returns a formatted date so it returns a blank string unless the date actually exists. For example:</p>
+<p><strong>Note:</strong> The appearance of the author <em>lifespan </em>dates is ugly! You can improve this using the <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data#date_formatting">same approach</a> as we used for the <code>BookInstance</code> list (adding the virtual property for the lifespan to the <code>Author</code> model). This time, however, there are missing dates, and references to nonexistent properties are ignored unless strict mode is in effect. <code>moment()</code> returns the current time, and you don't want missing dates to be formatted as if they were today. One way to deal with this is to define the body of the function that returns a formatted date so it returns a blank string unless the date actually exists. For example:</p>
 
 <p><code>return this.date_of_birth ? moment(this.date_of_birth).format('YYYY-MM-DD') : '';</code></p>
 </div>
 
-<h2 id="Genre_list_page—challenge!Edit">Genre list page—challenge!<a class="button section-edit only-icon" href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data$edit#Genre_list_page—challenge!" rel="nofollow, noindex"><span>Edit</span></a></h2>
+<h2 id="Genre_list_page—challenge!Edit">Genre list page—challenge!<a class="button section-edit only-icon" href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data$edit#Genre_list_page—challenge!" rel="nofollow, noindex"><span>Edit</span></a></h2>
 
 <p>In this section you should implement your own genre list page. The page should display a list of all genres in the database, with each genre linked to its associated detail page. A screenshot of the expected result is shown below.</p>
 
@@ -80,6 +80,6 @@ block content
 
 <h2 id="Next_steps">Next steps</h2>
 
-<p>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</p>
+<p>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</p>
 
-<p>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Genre_detail_page">Genre detail page</a>.</p>
+<p>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Genre_detail_page">Genre detail page</a>.</p>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/book_detail_page/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/book_detail_page/index.html
index f2080e6109..0655111870 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/book_detail_page/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/book_detail_page/index.html
@@ -107,6 +107,6 @@ block content
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Author_detail_page">Author detail page</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Author_detail_page">Author detail page</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/book_list_page/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/book_list_page/index.html
index 4dfc9c5a5e..ec3737a832 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/book_list_page/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/book_list_page/index.html
@@ -56,13 +56,13 @@ block content
 
 <h2 class="highlight-spanned" id="What_does_it_look_like"><span class="highlight-span">What does it look like?</span></h2>
 
-<p>Run the application (see <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/routes#Testing_the_routes">Testing the routes</a> for the relevant commands) and open your browser to <a class="external external-icon" href="http://localhost:3000/" rel="noopener">http://localhost:3000/</a>. Then select the <em>All books </em>link. If everything is set up correctly, your site should look something like the following screenshot.</p>
+<p>Run the application (see <a href="/ja/docs/Learn/Server-side/Express_Nodejs/routes#Testing_the_routes">Testing the routes</a> for the relevant commands) and open your browser to <a class="external external-icon" href="http://localhost:3000/" rel="noopener">http://localhost:3000/</a>. Then select the <em>All books </em>link. If everything is set up correctly, your site should look something like the following screenshot.</p>
 
 <p><img alt="Book List Page - Express Local Library site" src="https://mdn.mozillademos.org/files/14464/LocalLibary_Express_Book_List.png" style="border-style: solid; border-width: 1px; display: block; height: 387px; margin: 0px auto; width: 918px;"></p>
 
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/BookInstance_list_page">BookInstance list page</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/BookInstance_list_page">BookInstance list page</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/bookinstance_detail_page_and_challenge/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/bookinstance_detail_page_and_challenge/index.html
index 3c6cace6a5..6ec61cb4ea 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/bookinstance_detail_page_and_challenge/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/bookinstance_detail_page_and_challenge/index.html
@@ -87,5 +87,5 @@ block content
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/bookinstance_list_page/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/bookinstance_list_page/index.html
index 9bc7ee305f..f196628b07 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/bookinstance_list_page/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/bookinstance_list_page/index.html
@@ -64,6 +64,6 @@ block content
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Date_formatting_using_moment">Date formatting using moment</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Date_formatting_using_moment">Date formatting using moment</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/date_formatting_using_moment/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/date_formatting_using_moment/index.html
index 58851991b5..be96007add 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/date_formatting_using_moment/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/date_formatting_using_moment/index.html
@@ -53,8 +53,8 @@ translation_of: Learn/Server-side/Express_Nodejs/Displaying_data/Date_formatting
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Author_list_page">Author list page and Genre list page challenge</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Author_list_page">Author list page and Genre list page challenge</a>.</li>
 </ul>
 
 <p> </p>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/flow_control_using_async/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/flow_control_using_async/index.html
index 0639f79bc3..807f896ed5 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/flow_control_using_async/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/flow_control_using_async/index.html
@@ -132,6 +132,6 @@ translation_of: Learn/Server-side/Express_Nodejs/Displaying_data/flow_control_us
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of Part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Template_primer">Template primer</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of Part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Template_primer">Template primer</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/genre_detail_page/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/genre_detail_page/index.html
index 40770c5ef2..2edc3229bc 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/genre_detail_page/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/genre_detail_page/index.html
@@ -57,7 +57,7 @@ exports.genre_detail = function(req, res, next) {
 }</strong>
 </pre>
 
-<p>The message will then propagate through to our error handling code (this was set up when we <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/skeleton_website#error_handling">generated the app skeleton</a> - for more information see <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/Introduction#Handling_errors">Handling Errors</a>).</p>
+<p>The message will then propagate through to our error handling code (this was set up when we <a href="/ja/docs/Learn/Server-side/Express_Nodejs/skeleton_website#error_handling">generated the app skeleton</a> - for more information see <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Introduction#Handling_errors">Handling Errors</a>).</p>
 </div>
 
 <p>The rendered view is <strong>genre_detail</strong> and it is passed variables for the <code>title</code>, <code>genre</code> and the list of books in this genre (<code>genre_books</code>).</p>
@@ -116,6 +116,6 @@ block content
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Book_detail_page">Book detail page</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Book_detail_page">Book detail page</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/home_page/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/home_page/index.html
index 3e2f337370..74a74b3109 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/home_page/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/home_page/index.html
@@ -9,7 +9,7 @@ translation_of: Learn/Server-side/Express_Nodejs/Displaying_data/Home_page
 
 <h2 id="Route">Route</h2>
 
-<p>We created our index page routes in a <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/routes">previous tutorial.</a> As a reminder, all the route functions are defined in <strong>/routes/catalog.js</strong>:</p>
+<p>We created our index page routes in a <a href="/ja/docs/Learn/Server-side/Express_Nodejs/routes">previous tutorial.</a> As a reminder, all the route functions are defined in <strong>/routes/catalog.js</strong>:</p>
 
 <pre class="brush: js ">// GET catalog home page.
 router.get('/', book_controller.index);  //This actually maps to /catalog/ because we import the route with a /catalog prefix</pre>
@@ -27,7 +27,7 @@ router.get('/', book_controller.index);  //This actually maps to /catalog/ becau
 <p>The index controller function needs to fetch information about how many <code>Book</code>, <code>BookInstance</code>, available <code>BookInstance</code>, <code>Author</code>, and <code>Genre</code> records we have in the database, render this data in a template to create an HTML page, and then return it in an HTTP response.</p>
 
 <div class="note">
-<p><strong>Note:</strong> We use the <code><a class="external external-icon" href="http://mongoosejs.com/docs/api.html#model_Model.countDocuments" rel="noopener">countDocuments()</a></code> method to get the number of instances of each model. This is called on a model with an optional set of conditions to match against in the first argument and a callback in the second argument (as discussed in <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/mongoose">Using a Database (with Mongoose)</a>, and you can also return a <code>Query</code> and then execute it with a callback later. The callback will be returned when the database returns the count, with an error value (or <code>null</code>) as the first parameter and the count of records (or null if there was an error) as the second parameter.</p>
+<p><strong>Note:</strong> We use the <code><a class="external external-icon" href="http://mongoosejs.com/docs/api.html#model_Model.countDocuments" rel="noopener">countDocuments()</a></code> method to get the number of instances of each model. This is called on a model with an optional set of conditions to match against in the first argument and a callback in the second argument (as discussed in <a href="/ja/docs/Learn/Server-side/Express_Nodejs/mongoose">Using a Database (with Mongoose)</a>, and you can also return a <code>Query</code> and then execute it with a callback later. The callback will be returned when the database returns the count, with an error value (or <code>null</code>) as the first parameter and the count of records (or null if there was an error) as the second parameter.</p>
 
 <pre class="brush: js ">SomeModel.countDocuments({ a_model_field: 'match_value' }, function (err, count) {
  // ... do something if there is an err
@@ -128,6 +128,6 @@ block content
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Book_list_page">Book list page</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Book_list_page">Book list page</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/index.html
index 5726b6c0e1..3877cc76f3 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/index.html
@@ -80,13 +80,13 @@ translation_of: Learn/Server-side/Express_Nodejs/Displaying_data
 <h2 id="このモジュール">このモジュール</h2>
 
 <ul>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/Introduction">Express/Node のイントロダクション</a></li>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/development_environment">Node 開発環境の設定</a></li>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/Tutorial_local_library_website">Express チュートリアル: 地域図書館の Web サイト</a></li>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/skeleton_website">Express チュートリアル Part 2: スケルトン Web サイトの作成</a></li>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/mongoose">Express チュートリアル Part 3: データベースを使う (Mongoose を使用)</a></li>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/routes">Express チュートリアル Part 4: ルートとコントローラ</a></li>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express チュートリアル Part 5: ライブラリデータの表示</a></li>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/forms">Express チュートリアル Part 6: フォームの操作</a></li>
- <li><a href="https://developer.mozilla.org/ja/docs/Learn/Server-side/Express_Nodejs/deployment">Express チュートリアル Part 7: プロダクションへのデプロイ</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/Introduction">Express/Node のイントロダクション</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/development_environment">Node 開発環境の設定</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/Tutorial_local_library_website">Express チュートリアル: 地域図書館の Web サイト</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/skeleton_website">Express チュートリアル Part 2: スケルトン Web サイトの作成</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/mongoose">Express チュートリアル Part 3: データベースを使う (Mongoose を使用)</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/routes">Express チュートリアル Part 4: ルートとコントローラ</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express チュートリアル Part 5: ライブラリデータの表示</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/forms">Express チュートリアル Part 6: フォームの操作</a></li>
+ <li><a href="/ja/docs/Learn/Server-side/Express_Nodejs/deployment">Express チュートリアル Part 7: プロダクションへのデプロイ</a></li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/locallibrary_base_template/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/locallibrary_base_template/index.html
index a97c536eb2..91d52ad66f 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/locallibrary_base_template/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/locallibrary_base_template/index.html
@@ -49,7 +49,7 @@ html(lang='en')
 
 <p>The template uses (and includes) JavaScript and CSS from <a class="external external-icon" href="http://getbootstrap.com/" rel="noopener">Bootstrap</a> to improve the layout and presentation of the HTML page. Using Bootstrap or another client-side web framework is a quick way to create an attractive page that can scale well on different browser sizes, and it also allows us to deal with the page presentation without having to get into any of the details—we just want to focus on the server-side code here!</p>
 
-<p>The layout should be fairly obvious if you've read our above <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data#Template_primer">Template primer</a>. Note the use of <code>block content</code> as a placeholder for where the content for our individual pages will be placed.</p>
+<p>The layout should be fairly obvious if you've read our above <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data#Template_primer">Template primer</a>. Note the use of <code>block content</code> as a placeholder for where the content for our individual pages will be placed.</p>
 
 <p>The base template also references a local css file (<strong>style.css</strong>) that provides a little additional styling. Open <strong>/public/stylesheets/style.css</strong> and replace its content with the following CSS code:</p>
 
@@ -64,6 +64,6 @@ html(lang='en')
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Home_page">Home page</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/Home_page">Home page</a>.</li>
 </ul>
diff --git a/files/ja/learn/server-side/express_nodejs/displaying_data/template_primer/index.html b/files/ja/learn/server-side/express_nodejs/displaying_data/template_primer/index.html
index a68921a6a7..f8029cb236 100644
--- a/files/ja/learn/server-side/express_nodejs/displaying_data/template_primer/index.html
+++ b/files/ja/learn/server-side/express_nodejs/displaying_data/template_primer/index.html
@@ -17,7 +17,7 @@ translation_of: Learn/Server-side/Express_Nodejs/Displaying_data/Template_primer
 
 <h2 class="highlight-spanned" id="Template_configuration"><span class="highlight-span">Template configuration</span></h2>
 
-<p>The <em>LocalLibrary</em> was configured to use <a class="external external-icon" href="https://pugjs.org/api/getting-started.html" rel="noopener">Pug</a> when we <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/skeleton_website">created the skeleton website</a>. You should see the pug module included as a dependency in the website's <strong>package.json</strong> file, and the following configuration settings in the <strong>app.js</strong> file. The settings tell us that we're using pug as the view engine, and that <em>Express</em> should search for templates in the <strong>/views</strong> subdirectory.</p>
+<p>The <em>LocalLibrary</em> was configured to use <a class="external external-icon" href="https://pugjs.org/api/getting-started.html" rel="noopener">Pug</a> when we <a href="/ja/docs/Learn/Server-side/Express_Nodejs/skeleton_website">created the skeleton website</a>. You should see the pug module included as a dependency in the website's <strong>package.json</strong> file, and the following configuration settings in the <strong>app.js</strong> file. The settings tell us that we're using pug as the view engine, and that <em>Express</em> should search for templates in the <strong>/views</strong> subdirectory.</p>
 
 <pre class="brush: js line-numbers  language-js"><code class="language-js"><span class="comment token">// View engine setup.</span>
 app<span class="punctuation token">.</span><span class="keyword token">set</span><span class="punctuation token">(</span><span class="string token">'views'</span><span class="punctuation token">,</span> path<span class="punctuation token">.</span><span class="function token">join</span><span class="punctuation token">(</span>__dirname<span class="punctuation token">,</span> <span class="string token">'views'</span><span class="punctuation token">)</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
@@ -121,7 +121,7 @@ else
 
 <p>Across a site, it is usual for all pages to have a common structure, including standard HTML markup for the head, footer, navigation, etc. Rather than forcing developers to duplicate this "boilerplate" in every page, <em>Pug</em> allows you to declare a base template and then extend it, replacing just the bits that are different for each specific page.</p>
 
-<p>For example, the base template <strong>layout.pug</strong> created in our <a href="https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/skeleton_website">skeleton project</a> looks like this:</p>
+<p>For example, the base template <strong>layout.pug</strong> created in our <a href="/ja/docs/Learn/Server-side/Express_Nodejs/skeleton_website">skeleton project</a> looks like this:</p>
 
 <pre class="brush: html line-numbers  language-html"><code class="language-html">doctype html
 html
@@ -144,6 +144,6 @@ block content
 <h2 id="Next_steps">Next steps</h2>
 
 <ul>
- <li>Return to <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
- <li>Proceed to the next subarticle of part 5: <a href="/en-US/docs/Learn/Server-side/Express_Nodejs/Displaying_data/LocalLibrary_base_template">The LocalLibrary base template</a>.</li>
+ <li>Return to <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data">Express Tutorial Part 5: Displaying library data</a>.</li>
+ <li>Proceed to the next subarticle of part 5: <a href="/ja/docs/Learn/Server-side/Express_Nodejs/Displaying_data/LocalLibrary_base_template">The LocalLibrary base template</a>.</li>
 </ul>