2nd/10_Wiki/Topic_JavaScript/JavaScript_Date_Methods.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
javascript-date-methods	JavaScript Date Methods	Frontend	draft	conceptual		Date reference Date object methods Date prototype Date.parse Date.UTC toISOString		B	0.88	2026-06-23	2026-06-23			javascript js web frontend w3schools date reference	https://www.w3schools.com/js/js_date_reference.asp

JavaScript Date Methods

🎯 한 줄 통찰 (One-line insight)

This is the complete reference of Date object members — constructor/properties, get and set methods (local and UTC), utility statics, and string-conversion methods — the master index behind the more focused Date tutorials. [S1]

🧠 핵심 개념 (Core concepts)

• The Date API splits into families — constructor/properties, Get methods, Set methods, utility statics, and string-conversion methods. [S1]
• Every Get/Set field has a UTC counterpart — e.g. getDate() / getUTCDate(), setHours() / setUTCHours(). [S1]
• Static utility methods — now(), parse(), and UTC() are called on Date itself and work with millisecond timestamps. [S1]
• Many conversion methods — toString(), toISOString(), toDateString(), toLocaleString(), and others render a Date as a string in different formats/locales. [S1]
• Deprecated members — getYear()/setYear() (use getFullYear()/setFullYear()) and toGMTString() (use toUTCString()). [S1]

🧩 추출된 패턴 (Extracted patterns)

• Local vs UTC symmetry — for any field, pick the plain method for local time or the UTC variant for universal time. [S1]
• Static parsing/construction — turn strings or component lists into timestamps with Date.parse() and Date.UTC(), current time with Date.now(). [S1]
• Choose a string formatter by need — ISO (toISOString), JSON (toJSON), locale-aware (toLocale*String), or date/time-only (toDateString, toTimeString). [S1]

📖 세부 내용 (Details)

This page is a reference index of Date methods and properties grouped by family. No "Example" code boxes were present to capture; the content is the reference tables below. [S1]

Date Constructor & Properties [S1]

Method/Property	Description
new Date()	Creates a new Date object
constructor	Returns the function that created the Date prototype
prototype	Allows you to add properties and methods to an object

Date Get Methods [S1]

Method	Description
getDate()	Returns the day of the month (from 1-31)
getDay()	Returns the day of the week (from 0-6)
getFullYear()	Returns the year
getHours()	Returns the hour (from 0-23)
getMilliseconds()	Returns the milliseconds (from 0-999)
getMinutes()	Returns the minutes (from 0-59)
getMonth()	Returns the month (from 0-11)
getSeconds()	Returns the seconds (from 0-59)
getTime()	Returns the number of milliseconds since midnight Jan 1 1970
getTimezoneOffset()	Returns the time difference between UTC time and local time, in minutes
getUTCDate()	Returns the day of the month, according to universal time (1-31)
getUTCDay()	Returns the day of the week, according to universal time (0-6)
getUTCFullYear()	Returns the year, according to universal time
getUTCHours()	Returns the hour, according to universal time (from 0-23)
getUTCMilliseconds()	Returns the milliseconds, according to universal time (0-999)
getUTCMinutes()	Returns the minutes, according to universal time (from 0-59)
getUTCMonth()	Returns the month, according to universal time (from 0-11)
getUTCSeconds()	Returns the seconds, according to universal time (from 0-59)
getYear()	Deprecated. Use getFullYear() instead

Date Set Methods [S1]

Method	Description
setDate()	Sets the day of the month of a date object
setFullYear()	Sets the year of a date object
setHours()	Sets the hour of a date object
setMilliseconds()	Sets the milliseconds of a date object
setMinutes()	Set the minutes of a date object
setMonth()	Sets the month of a date object
setSeconds()	Sets the seconds of a date object
setTime()	Sets a date to a specified number of milliseconds after/before January 1, 1970
setUTCDate()	Sets the day of the month of a date object, according to universal time
setUTCFullYear()	Sets the year of a date object, according to universal time
setUTCHours()	Sets the hour of a date object, according to universal time
setUTCMilliseconds()	Sets the milliseconds of a date object, according to universal time
setUTCMinutes()	Set the minutes of a date object, according to universal time
setUTCMonth()	Sets the month of a date object, according to universal time
setUTCSeconds()	Set the seconds of a date object, according to universal time
setYear()	Deprecated. Use setFullYear() instead

Date Utility Methods [S1]

Method	Description
now()	Returns the number of milliseconds since midnight Jan 1, 1970
parse()	Parses a date string and returns milliseconds since January 1, 1970
UTC()	Returns the number of milliseconds in a date since midnight of January 1, 1970

Date String Conversion Methods [S1]

Method	Description
toDateString()	Converts the date portion of a Date object into a readable string
toGMTString()	Deprecated. Use toUTCString() instead
toISOString()	Returns the date as a string, using the ISO standard
toJSON()	Returns the date as a string, formatted as a JSON date
toLocaleDateString()	Returns the date portion of a Date object as a string, using locale conventions
toLocaleTimeString()	Returns the time portion of a Date object as a string, using locale conventions
toLocaleString()	Converts a Date object to a string, using locale conventions
toString()	Converts a Date object to a string
toTimeString()	Converts the time portion of a Date object to a string
toUTCString()	Converts a Date object to a string, according to universal time
valueOf()	Returns the primitive value of a Date object

🛠️ 적용 사례 (Applied in summary)

As a reference page it has no worked examples; it is the lookup table consulted when picking the right Date method. Worked examples live in the focused tutorials (JavaScript Date Get Methods, JavaScript Date Set Methods). No external project/commit applications found in the source.

💻 코드 패턴 (Code patterns)

Not found in source — this reference page contains no "Example" code boxes; only the method/property tables above. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

The reference marks getYear()/setYear() and toGMTString() as deprecated, pointing to getFullYear()/setFullYear() and toUTCString() respectively. No other contradictions found in the source. [S1]

✅ 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: JavaScript Tutorial
• 관련 개념: JavaScript Date Get Methods, JavaScript Date Set Methods, JavaScript Dates
• 참조 맥락: The master index of the Date object — consulted to find the exact method name and signature.

📚 출처 (Sources)

• [S1] W3Schools — JavaScript Date Methods — https://www.w3schools.com/js/js_date_reference.asp

📝 변경 이력 (Change history)

• 2026-06-23: Initial draft synthesized from the W3Schools "JavaScript Date Methods" page (Astra wiki-curation, P-Reinforce v3.1 format).