2nd/10_Wiki/Topic_CSS/CSS_Attribute_Selectors_Advanced.md

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
css-advanced-attribute-selectors	CSS Advanced Attribute Selectors	Frontend	draft	conceptual		advanced attribute selector [attribute^=value] [attribute$=value] [attribute*=value] substring attribute selector		B	0.88	2026-06-23	2026-06-23			css web frontend w3schools selectors attributes	https://www.w3schools.com/css/css_attribute_selectors_advanced.asp

CSS Advanced Attribute Selectors

🎯 한 줄 통찰 (One-line insight)

The advanced attribute selectors match by substring position — ^= for values that start with, $= for values that end with, and *= for values that contain a string — and combine with input[type=...] to style form controls. [S1]

🧠 핵심 개념 (Core concepts)

• [attribute^="value"] — selects elements with the specific attribute whose value starts with a specific value. [S1]
• [attribute$="value"] — selects elements whose attribute value ends with a specific value. [S1]
• [attribute*="value"] — selects elements whose attribute value contains a specific value (substring, anywhere). [S1]
• Form styling use — attribute selectors are commonly used to style form elements by their type, e.g. input[type="text"] and input[type="button"]. [S1]

🧩 추출된 패턴 (Extracted patterns)

• Prefix match — ^= targets values beginning with a token (e.g. class names that start with top). [S1]
• Suffix match — $= targets values ending with a token (e.g. class names ending in test, or file extensions). [S1]
• Substring match — *= targets any value containing the token, the most permissive of the three. [S1]
• Type-based form styling — drive distinct styles for text vs. button inputs purely from their type attribute. [S1]

📖 세부 내용 (Details)

[attribute^="value"] selector The [attribute^="value"] selector is used to select elements with the specific attribute whose value starts with a specific value. The following selects elements whose class starts with "top": [S1]

[class^="top"] {
  background: yellow;
}

[attribute$="value"] selector The [attribute$="value"] selector is used to select elements whose attribute value ends with a specific value. The following selects elements whose class ends with "test": [S1]

[class$="test"] {
  background: yellow;
}

[attribute*="value"] selector The [attribute*="value"] selector is used to select elements whose attribute value contains a specific value. The following selects elements whose class contains "te": [S1]

[class*="te"] {
  background: yellow;
}

Styling Forms With Attribute Selectors Attribute selectors can style form controls by their type. The following styles text inputs and button inputs differently: [S1]

input[type="text"] {
  width: 150px;
  padding: 6px;
  margin-bottom: 10px;
  background-color: pink;
}

input[type="button"] {
  width: 100px;
  padding: 6px;
  background-color: lightgreen;
}

Note: The full HTML markup for the form example is not shown in the fetched source — "Not found in source."

🛠️ 적용 사례 (Applied in summary)

The page's examples demonstrate the three substring selectors on class values and applying type-based attribute selectors to style form inputs. No external project/commit applications found in the source.

💻 코드 패턴 (Code patterns)

The three substring attribute-selector forms (language: CSS):

[class^="top"]  { background: yellow; }   /* starts with */
[class$="test"] { background: yellow; }   /* ends with   */
[class*="te"]   { background: yellow; }   /* contains    */

Type-based form styling (language: CSS):

input[type="text"]   { width: 150px; padding: 6px; margin-bottom: 10px; background-color: pink; }
input[type="button"] { width: 100px; padding: 6px; background-color: lightgreen; }

⚖️ 비교 및 선택 기준 (Comparison & decision criteria)

• ^= (starts with) — use when matching a known prefix, e.g. a naming convention where related classes begin with the same token. [S1]
• $= (ends with) — use when matching a known suffix, e.g. classes ending in test. [S1]
• *= (contains) — use when the token may appear anywhere in the value; broadest match of the three. [S1]
• vs. basic selectors — these substring forms complement the basic [attribute], =, ~=, and |= selectors documented in CSS Attribute Selectors, adding positional substring matching that the basic set lacks. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

No contradictions found in the source.

✅ 검증 상태 및 신뢰도

• 상태: draft
• 검증 단계: conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
• 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)

• 상위/루트: CSS Tutorial
• 관련 개념: CSS Attribute Selectors, CSS Selectors, CSS Styling Forms
• 참조 맥락: Referenced when targeting elements by partial attribute values or styling form controls by their type.

📚 출처 (Sources)

• [S1] W3Schools — CSS Advanced Attribute Selectors — https://www.w3schools.com/css/css_attribute_selectors_advanced.asp

📝 변경 이력 (Change history)

• 2026-06-23: Initial draft synthesized from the W3Schools "CSS Advanced Attribute Selectors" page (Astra wiki-curation, P-Reinforce v3.1 format).