JIS Practice

Untimed JIS kana-input (かな入力) typing practice with real Japanese text — https://jis-practice.sjun.me

No timer, no WPM. Only keypresses and accuracy (correct keypresses ÷ total keypresses).

Features

• Direct key capture. Keys are read by physical position (KeyboardEvent.code) on the JIS kana layout; the OS IME is never involved. ゛/゜ are separate keystrokes.
• Kanji auto-convert once their reading is typed. Katakana words need F7 (Ctrl+K also accepted, as on macOS) after each word.
• Alphanumeric mode switches automatically for Latin letters, digits and code (JIS ASCII layout).
• Staggered JIS keyboard with six keycap modes: blank, blank + F/J, ひらがな, ABC/123/記号, カタカナ, romaji (normal + shifted).
• Hints (each can be shown/hidden): romaji, furigana, English translation, Korean translation.
• Line-by-line practice; random corpus and random starting line by default; loops at the end.
• Upload your own .txt (one line per practice line). Kanji readings are looked up in the browser with kuromoji, or annotate them yourself as {漢字|かんじ}. Uploads live only in that browser tab's session storage and are never sent anywhere.
• ANSI fallback: on US keyboards, ` acts as the JIS ¥ key (ー) and right Alt/⌥ as the JIS \ key (ろ).

Corpora (corpus/)

File	Content	Source
legal.txt	日本国憲法 (preamble + selected articles), 民法 1–3, 刑法 199, 著作権法 13	e-Gov 法令検索 (not copyrightable, 著作権法 §13)
popculture.txt	Original prose about 「残酷な天使のテーゼ」 and Evangelion	Facts checked against the sources listed in the file
coding.txt	Java Vector3 implements VectorType<Vector3> with Japanese comments	Original
english.txt	US Constitution (Preamble, Art. I §1–3, Bill of Rights) in katakana	National Archives transcription (public domain)
nonenglish.txt	Weimar Constitution Art. 48 (German) in katakana	Wikisource (public domain)
german.txt	Sung text of Beethoven Symphony No. 9, 4th mvt. (“O Freunde” + Schiller’s “An die Freude”) in katakana	Wikisource, IMSLP (public domain)
korean.txt	KOSPI 200 companies, CEOs and main products	KRX constituents, DART company filings
—	Random hiragana/katakana pair drill	Generated

All English and Korean translations were written for this project and are not official translations.

The lyrics of 「残酷な天使のテーゼ」 are not included because they are under copyright. To practise them, upload them yourself as a .txt; uploads stay in your browser.

See corpus/FORMAT.md for the file format. Validate with:

node scripts/validate.mjs corpus/*.txt

Development

Plain static files, no build step:

python3 -m http.server 8000   # then open http://localhost:8000

License

MIT — see LICENSE. The corpus texts keep the status described above.