checklist

- [ ] [はじめに](https://jsprimer.net/intro/)
- [ ] [著者紹介](https://jsprimer.net/intro/authors/)
- [ ] [読み始める前の事前準備](https://jsprimer.net/intro/preparation/)
- [ ] [文章の間違いに気づいたら](https://jsprimer.net/intro/feedback/)
- [ ] [第一部: 基本文法](https://jsprimer.net/basic/)
- [ ] [JavaScriptとは](https://jsprimer.net/basic/introduction/)
- [ ] [コメント](https://jsprimer.net/basic/comments/)
- [ ] [変数と宣言](https://jsprimer.net/basic/variables/)
- [ ] [値の評価と表示](https://jsprimer.net/basic/read-eval-print/)
- [ ] [データ型とリテラル](https://jsprimer.net/basic/data-type/)
- [ ] [演算子](https://jsprimer.net/basic/operator/)
- [ ] [暗黙的な型変換](https://jsprimer.net/basic/implicit-coercion/)
- [ ] [関数と宣言](https://jsprimer.net/basic/function-declaration/)
- [ ] [文と式](https://jsprimer.net/basic/statement-expression/)
- [ ] [条件分岐](https://jsprimer.net/basic/condition/)
- [ ] [ループと反復処理](https://jsprimer.net/basic/loop/)
- [ ] [オブジェクト](https://jsprimer.net/basic/object/)
- [ ] [プロトタイプオブジェクト](https://jsprimer.net/basic/prototype-object/)
- [ ] [配列](https://jsprimer.net/basic/array/)
- [ ] [文字列](https://jsprimer.net/basic/string/)
- [ ] [文字列とUnicode](https://jsprimer.net/basic/string-unicode/)
- [ ] [ラッパーオブジェクト](https://jsprimer.net/basic/wrapper-object/)
- [x] #2
- [ ] [関数とthis](https://jsprimer.net/basic/function-this/)
- [x] #3
- [x] #4
- [x] #5
- [ ] [Map/Set](https://jsprimer.net/basic/map-and-set/)
- [ ] [JSON](https://jsprimer.net/basic/json/)
- [ ] [Date](https://jsprimer.net/basic/date/)
- [ ] [Math](https://jsprimer.net/basic/math/)
- [ ] [ECMAScriptモジュール](https://jsprimer.net/basic/module/)
- [ ] [ECMAScript](https://jsprimer.net/basic/ecmascript/)
- [ ] [第一部: おわりに](https://jsprimer.net/basic/other-parts/)
- [ ] [第二部: 応用編（ユースケース）](https://jsprimer.net/use-case/)
- [ ] [アプリケーション開発の準備](https://jsprimer.net/use-case/setup-local-env/)
- [ ] [Ajax通信](https://jsprimer.net/use-case/ajaxapp/)
- [ ] [エントリーポイント](https://jsprimer.net/use-case/ajaxapp/entrypoint/)
- [ ] [HTTP通信](https://jsprimer.net/use-case/ajaxapp/http/)
- [ ] [データを表示する](https://jsprimer.net/use-case/ajaxapp/display/)
- [ ] [Promiseを活用する](https://jsprimer.net/use-case/ajaxapp/promise/)
- [ ] [Node.jsでCLIアプリ](https://jsprimer.net/use-case/nodecli/)
- [ ] [Node.jsでHello World](https://jsprimer.net/use-case/nodecli/helloworld/)
- [ ] [コマンドライン引数を処理する](https://jsprimer.net/use-case/nodecli/argument-parse/)
- [ ] [ファイルを読み込む](https://jsprimer.net/use-case/nodecli/read-file/)
- [ ] [MarkdownをHTMLに変換する](https://jsprimer.net/use-case/nodecli/md-to-html/)
- [ ] [ユニットテストを記述する](https://jsprimer.net/use-case/nodecli/refactor-and-unittest/)
- [ ] [Todoアプリ](https://jsprimer.net/use-case/todoapp/)
- [ ] [エントリーポイント](https://jsprimer.net/use-case/todoapp/entrypoint/)
- [ ] [アプリの構成要素](https://jsprimer.net/use-case/todoapp/app-structure/)
- [ ] [Todoアイテムの追加を実装する](https://jsprimer.net/use-case/todoapp/form-event/)
- [ ] [イベントとモデル](https://jsprimer.net/use-case/todoapp/event-model/)
- [ ] [Todoアイテムの更新と削除を実装する](https://jsprimer.net/use-case/todoapp/update-delete/)
- [ ] [Todoアプリのリファクタリング](https://jsprimer.net/use-case/todoapp/final/)
- [ ] [付録: 参考リンク集](https://jsprimer.net/appendix/links/)
- [ ] [付録: JavaScriptチートシート](https://jsprimer.net/cheatsheet/)
- [ ] [おわりに](https://jsprimer.net/outro/)

Start by reviewing the unchecked chapter links listed in the issue body, from the introductory material through the use cases and appendices. Clarify which checklist items are meant to be completed and what evidence marks them as done; the issue currently defines no specific documentation change or completion criteria.

Written by the indexing model from the issue text.