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- Topic_General → Domain_General
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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-11 11:05:56 +09:00

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id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
id title category status verification_status canonical_id aliases duplicate_of source_trust_level confidence_score created_at updated_at review_reason merge_history tags raw_sources applied_in github_commit
w3css-alerts W3CSS Alerts Programming_Language draft conceptual
alert boxes
× close button
W3.CSS 알림
B 0.88 2026-07-04 2026-07-04
w3css
css-framework
w3schools
alerts
https://www.w3schools.com/w3css/w3css_alerts.asp

W3CSS Alerts

🎯 한 줄 통찰 (One-line insight)

The source explicitly prefers the &times; HTML entity over the literal letter "X" for close buttons — a small but deliberate detail, since &times; renders as a proper multiplication-style cross symbol rather than relying on the letter X looking "close enough," making the close affordance visually distinct from actual text content. [S1]

🧠 핵심 개념 (Core concepts)

  • No dedicated alert class — alerts are w3-panel + a STRONG (saturated) color, contrasted against Notes' PALE colors. [S1]
  • Semantic color convention — red (danger), yellow (warning), green (success), blue (information) — though any color can technically be used. [S1]
  • Dismissible via inline onclickthis.parentElement.style.display='none' on a w3-button w3-display-topright span containing &times;. [S1]
  • &times; preferred over literal "X" — explicitly recommended as the standard close-icon character. [S1]
  • Composable with rounding and cardsw3-round/w3-round-large/w3-round-xxlarge or w3-card-4 can be layered onto an alert panel. [S1]

📖 세부 내용 (Details)

  • Strong-color alert (Danger): <div class="w3-panel w3-red"><h3>Danger!</h3><p>Red often indicates a dangerous or negative situation.</p></div>. [S1]
  • Dismiss button: <span onclick="this.parentElement.style.display='none'" class="w3-button w3-display-topright">&times;</span>. [S1]
  • Rounded alert: <div class="w3-panel w3-green w3-round">. [S1]
  • Card-style alert: <div class="w3-panel w3-yellow w3-card-4">. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

  • 닫기 아이콘 권장사항: 닫기 버튼에는 문자 "X"보다 × HTML 엔티티가 선호된다는 점이 팁으로 명시됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — onclick 인라인 이벤트만으로 별도 JS 파일 없이 알림을 닫는 것이 경량 UI 인터랙션의 대표 사례다. [S1]

💻 코드 패턴 (Code patterns)

Dismissible alert using the × entity (HTML):

<div class="w3-panel w3-red w3-display-container">
  <span onclick="this.parentElement.style.display='none'"
        class="w3-button w3-display-topright">&times;</span>
  <h3>Danger!</h3>
  <p>Red often indicates a dangerous or negative situation.</p>
</div>

검증 상태 및 신뢰도

  • 상태: draft
  • 검증 단계: conceptual
  • 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
  • 신뢰 점수: 0.88
  • 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

📚 출처 (Sources)

📝 변경 이력 (Change history)

  • 2026-07-04: Initial draft synthesized from the W3Schools "W3.CSS Alerts" page (Astra wiki-curation, P-Reinforce v3.1 format).