window-alert-confirm SKILL.md skillA

window-alert-confirm from ncaq/konoka is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ncaq/konoka/window-alert-confirm@git:20260407.8cdba48

Pins git:20260407.8cdba48 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ncaq/konoka
Path
plugins/web-tasuke/skills/window-alert-confirm/SKILL.md
Versions recorded
1
Latest version
git:20260407.8cdba48, committed Apr 7, 2026
Size
3,555 bytes
Repository stars
3
License
Apache-2.0

Guidelines for using window.alert() and window.confirm() in web applications. Use when implementing error notifications or destructive action confirmations.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# `window.alert`と`window.confirm`の使用指針

## 利点

`window.alert()`と`window.confirm()`はブラウザ標準のAPIです。
以下の利点があるため、適切な場面では使います。

- 実装コストがゼロです。UIコンポーネントの作成やstate管理が不要です
- ブラウザ標準APIのため、キーボード操作やスクリーンリーダーへの対応など最低限のアクセシビリティが確保されています
- メインスレッドをブロックするため、ユーザーが確実に気づきます
- `confirm()`の戻り値で同期的に分岐できるため、コードがシンプルになります

## 既知の欠点

- メインスレッドを完全にブロックするため、JS実行・アニメーション・タイマーが停止します
- ユーザーが「このページでこれ以上のダイアログを表示しない」を選択すると、
  ブラウザが抑制し`confirm()`が常に`false`になる可能性があります
- Chrome M92以降、クロスオリジンiframe内からの呼び出しは無効化されています

### iOS Safariの`history.pushState`との組み合わせの問題

iOS Safariでは`history.pushState()`で追加された履歴エントリにブラウザバック(スワイプバック含む)で戻ると、
その後の`alert()`/`confirm()`/`prompt()`がサイレントに無視されます。
`confirm()`は常に`false`を返します。

このバグはiOS 9.3頃から報告されており、
iOS 18時点でも修正されていません。
alert/confirm/promptが無視される問題そのもののWebKit Bugzillaの公開チケットはなく、
Apple内部のRadarで管理されていると推測されています。
WebKitチームはユーザーインタラクションなしの`pushState`エントリのスキップを、
意図的なセキュリティ強化として扱っている面もあり、
根本的な修正の見通しは不明です。

Apple Developer Forumでの[報告](https://developer.apple.com/forums/thread/684407)で、
iOS 17/18でも再現が確認されています。
WebKit Bugzillaの[#248303](https://bugs.webkit.org/show_bug.cgi?id=248303)は、
直接にはpopstateイベントの問題ですが、
`pushState`エントリのスキップという根本原因が共通しています。

SPA的なhistory操作を行うアプリケーションでは、
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ncaq/konoka/window-alert-confirm@sha256:e31f004f0a49a27c

The line at the top of this page pins the label git:20260407.8cdba48, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ailgb52ayofn6xl2.svg)](https://markdownregistry.com/a/art_ailgb52ayofn6xl2)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Apr 7, 2026.

versioncommittedcommitsizeaudit
git:20260407.8cdba48 latest2026-04-07 8cdba48 3,555 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (3555 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

ncaq/konoka · 3 stars · license Apache-2.0 · pushed 2026-10-19 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_ailgb52ayofn6xl2
GET https://markdownregistry.com/api/v1/resolve?ref=ncaq/konoka/window-alert-confirm
GET https://markdownregistry.com/api/v1/blob/e31f004f0a49a27c3701b238e1b66b27f3c4984cbd1cc6f63ce69bb4c59fba1f

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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