譛ｬ鬆√�逶ｮ谺｡ 逶ｮ谺｡ 谺｡鬆�: 15-10_RegExp_Objects 蜑埼��: 15-8_The_Math_Object
Date 繧ｪ繝悶ず繧ｧ繧ｯ繝医�縲∵凾髢灘�縺ｮ蛟九��迸ｬ髢薙ｒ繝溘Μ遘偵〒遉ｺ縺呎焚縺ｧ讒区�縺輔ｌ繧九ゅ∪縺壹� NaN 縺ｧ縺ゅｋ縺薙→繧ゅ≠繧翫� Date 繧ｪ繝悶ず繧ｧ繧ｯ繝医′譎る俣縺ｮ迚ｹ螳壹�迸ｬ髢薙ｒ縺ゅｉ繧上＆縺ｪ縺�％縺ｨ繧堤､ｺ縺吶�
谺｡繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ縺ｯ譎る俣蛟､縺ｮ貍皮ｮ励�縺溘ａ縺ｮ謨ｰ縲��髢｢謨ｰ繧貞ｮ夂ｾｩ縺吶ｋ縲� 蜷�こ繝ｼ繧ｹ縺ｫ縺､縺�※縲√◎縺ｮ髢｢謨ｰ縺ｮ蠑墓焚縺� NaN 縺ｪ繧峨�縲∫ｵ先棡縺ｯ NaN 縺ｨ縺ｪ繧九�
譎る俣縺ｯ縲� ECMAScript 縺ｧ縺ｯ UTC 1970 蟷ｴ 1 譛� 1 譌･ 縺九ｉ縺ｮ繝溘Μ遘偵〒險域ｸｬ縺輔ｌ繧九ゅ≧繧九≧遘偵�辟｡隕悶＆繧後ｋ縲ゆｸ譌･縺ゅ◆繧頑ｭ｣隗｣縺ｫ 86,400,000 遘偵→縺�≧縺薙→縺ｫ縺吶ｋ縲� ECMAScript 謨ｰ蛟､縺ｯ -9,007,199,254,740,991 縺九ｉ 9,007,199,254,740,991 縺ｾ縺ｧ陦ｨ迴ｾ縺ｧ縺阪ｋ; 縺薙�遽�峇縺ｯ縲� UTC 1970 蟷ｴ 1 譛� 1 譌･ 繧貞渕轤ｹ縺ｨ縺吶ｋ蜑榊ｾ檎ｴ� 285,616 蟷ｴ髢薙�莉ｻ諢上�迸ｬ髢薙�縲∝宍蟇�↑繝溘Μ遘偵〒縺ｮ譎る俣險域ｸｬ繧貞庄閭ｽ縺ｫ縺吶ｋ縲�
ECMAScript Date 繧ｪ繝悶ず繧ｧ繧ｯ繝医′繧ｵ繝昴�繝医☆繧句ｮ滄圀縺ｮ譎る俣縺ｮ遽�峇縺ｯ繧上★縺九↓蟆上＆縺�; 蜴ｳ蟇�↓縺ｯ縲� UTC 1970 蟷ｴ 1 譛� 1 譌･髢句ｧ区凾縺ｮ蜊亥燕髮ｶ譎ゅ°繧芽ｨ域ｸｬ縺輔ｌ繧� -100,000,000 譌･縺九ｉ 100,000,000 譌･縺ｧ縺ゅｋ縲� 縺薙ｌ縺ｯ UTC 1970 蟷ｴ 1 譛� 1 譌･ 縺九ｉ驕主悉譛ｪ譚･縺ｮ荳｡蛛ｴ縺ｫ 8,640,000,000,000,000 繝溘Μ遘偵�遽�峇繧剃ｸ弱∴繧九�
蜴ｳ蟇�↑ UTC 1970 蟷ｴ 1 譛� 1 譌･髢句ｧ区凾縺ｮ蜊亥燕髮ｶ譎ゅ�縲∝､ +0 縺ｧ陦ｨ縺輔ｌ繧九�
譎る俣蛟､ t 縺ｯ譌･謨ｰ (day number) 縺ｫ螻槭☆繧�
Day(t) = floor(t / msPerDay)
荳譌･縺ゅ◆繧翫�繝溘Μ遘呈焚縺ｮ縺ｨ縺薙ｍ縺ｯ
msPerDay = 86400000
谿九ｊ縺ｯ荳譌･蜀��譎る俣縺ｨ蜻ｼ縺ｰ繧後ｋ:
TimeWithinDay(t) = t modulo msPerDay
ECMAScript 縺ｯ縲∵律謨ｰ縺ｮ蟷ｴ謨ｰ縺ｸ縺ｮ繝槭ャ繝励→荳蟷ｴ蜀��譛域律縺ｮ豎ｺ螳壹↓繧ｰ繝ｬ繧ｴ繝ｪ繧ｪ證ｦ繧堤畑縺�ｋ縲ゅ％縺ｮ繧ｷ繧ｹ繝�Β縺ｧ縺ｯ縲√≧繧九≧蟷ｴ縺ｯ豁｣遒ｺ縺ｫ (4 縺ｧ蜑ｲ繧雁�繧後ｋ) 縺九▽ ((100 縺ｧ蜑ｲ繧雁�繧後↑縺�) 縺ｾ縺溘� (400 縺ｧ蜑ｲ繧雁�繧後ｋ)) 繧医≧縺ｪ蟷ｴ縺ｧ縺ゅｋ縲ゅ◎繧後ｆ縺亥ｹｴ謨ｰ y 縺ｮ譌･謨ｰ縺ｯ谺｡縺ｮ繧医≧縺ｫ螳夂ｾｩ縺輔ｌ繧九�
DaysInYear(y) = 365 if (y modulo 4) ≠ 0
= 366 if (y modulo 4) = 0 and (y modulo 100) ≠ 0
= 365 if (y modulo 100) = 0 and (y modulo 400) ≠ 0
= 366 if (y modulo 400) = 0
髱槭≧繧九≧蟷ｴ縺ｯ騾壼ｸｸ縺ｮ譛医＃縺ｨ縺ｮ譌･謨ｰ縺ｧ 365 譌･縺ｧ縺ゅｊ縲√≧繧九≧蟷ｴ縺ｯ 2 譛医↓霑ｽ蜉�譌･繧呈戟縺､縲� 蟷ｴ y 縺ｮ譛蛻昴�譌･縺ｮ譌･謨ｰ縺ｯ谺｡縺ｫ荳弱∴繧峨ｌ繧�:
DayFromYear(y) = 365 × (y(1970) + floor((y(1969)/4) − floor((y(1901)/100) + floor((y−1601)/400)
蟷ｴ縺ｮ髢句ｧ九�譎る俣蛟､縺ｯ:
TimeFromYear(y) = msPerDay ( DayFromYear(y)
譎る俣蛟､縺ｯ谺｡縺ｫ繧医▲縺ｦ蟷ｴ繧呈ｱｺ螳壹☆繧�:
YearFromTime(t) = TimeFromYear(y) ≤ t 縺ｧ縺ゅｋ繧医≧縺ｪ (豁｣縺ｮ辟｡髯仙､ｧ縺ｫ譛繧りｿ代＞) 譛螟ｧ謨ｴ謨ｰ y
縺�ｋ縺�ｹｴ髢｢謨ｰ縺ｯ縲∵凾髢薙′縺�ｋ縺�ｹｴ蜀�〒縺ゅｌ縺ｰ 1 縺ｧ縺ゅｊ縲√◎縺�〒縺ｪ縺代ｌ縺ｰ 0 縺ｧ縺ゅｋ:
InLeapYear(t) = 0 if DaysInYear(YearFromTime(t)) = 365
= 1 if DaysInYear(YearFromTime(t)) = 366
譛医�縲� 0 縺九ｉ 11 縺ｮ遽�峇縺ｮ謨ｴ謨ｰ縺ｧ隴伜挨縺輔ｌ繧九よ凾髢灘､ t 縺九ｉ譛域焚縺ｸ縺ｮ繝槭ャ繝斐Φ繧ｰ MonthFromTime(t) 縺ｯ谺｡縺ｧ螳夂ｾｩ縺輔ｌ繧�:
MonthFromTime(t) = 0 if 0 ≤ DayWithinYear(t) < 31
= 1 if 31 ≤ DayWithinYear (t) < 59+InLeapYear(t)
= 2 if 59+InLeapYear(t) ≤ DayWithinYear (t) < 90+InLeapYear(t)
= 3 if 90+InLeapYear(t) ≤ DayWithinYear (t) < 120+InLeapYear(t)
= 4 if 120+InLeapYear(t) ≤ DayWithinYear (t) < 151+InLeapYear(t)
= 5 if 151+InLeapYear(t) ≤ DayWithinYear (t) < 181+InLeapYear(t)
= 6 if 181+InLeapYear(t) ≤ DayWithinYear (t) < 212+InLeapYear(t)
= 7 if 212+InLeapYear(t) ≤ DayWithinYear (t) < 243+InLeapYear(t)
= 8 if 243+InLeapYear(t) ≤ DayWithinYear (t) < 273+InLeapYear(t)
= 9 if 273+InLeapYear(t) ≤ DayWithinYear (t) < 304+InLeapYear(t)
= 10 if 304+InLeapYear(t) ≤ DayWithinYear (t) < 334+InLeapYear(t)
= 11 if 334+InLeapYear(t) ≤ DayWithinYear (t) < 365+InLeapYear(t)
DayWithinYear(t) 縺ｯ谺｡縺ｮ繧医≧縺ｫ螳夂ｾｩ縺吶ｋ
DayWithinYear(t) = Day(t)(DayFromYear(YearFromTime(t))
譛医�蛟､ 0 縺ｯ 1 譛医ｒ謖�☆; 1 縺ｯ 2 譛医ｒ謖�☆ ; 2 縺ｯ 3 譛医ｒ謖�☆; 3 縺ｯ 4 譛医ｒ謖�☆; 4 縺ｯ 5 譛医ｒ謖�☆; 5 縺ｯ 6 譛医ｒ謖�☆; 6 縺ｯ 7 譛医ｒ謖�☆; 7 縺ｯ 8 譛医ｒ謖�☆; 8 縺ｯ 9 譛医ｒ謖�☆; 9 縺ｯ 10 譛医ｒ謖�☆; 10 縺ｯ 11 譛医ｒ謖�☆; 11 縺ｯ 12 譛医ｒ謖�☆縲� MonthFromTime(0) = 0 縺ｯ 1970 蟷ｴ 1 譛� 1 譌･譛ｨ譖懈律 縺ｫ隧ｲ蠖薙☆繧九％縺ｨ縺ｫ豕ｨ諢上�
譌･莉倥�縲� 1 縺九ｉ 31 縺ｮ遽�峇縺ｮ謨ｴ謨ｰ縺ｧ隴伜挨縺輔ｌ繧九よ凾髢灘､ t 縺九ｉ譌･莉俶焚縺ｸ縺ｮ繝槭ャ繝斐Φ繧ｰ DateFromTime(t) 縺ｯ谺｡縺ｧ螳夂ｾｩ縺輔ｌ繧�:
DateFromTime(t) = DayWithinYear(t)+1 if MonthFromTime(t)=0
= DayWithinYear(t)− 30 if MonthFromTime(t)=1
= DayWithinYear(t)− 58(InLeapYear(t) if MonthFromTime(t)=2
= DayWithinYear(t)− 89(InLeapYear(t) if MonthFromTime(t)=3
= DayWithinYear(t)−119(InLeapYear(t) if MonthFromTime(t)=4
= DayWithinYear(t)−150(InLeapYear(t) if MonthFromTime(t)=5
= DayWithinYear(t)−180(InLeapYear(t) if MonthFromTime(t)=6
= DayWithinYear(t)−211(InLeapYear(t) if MonthFromTime(t)=7
= DayWithinYear(t)−242(InLeapYear(t) if MonthFromTime(t)=8
= DayWithinYear(t)−272(InLeapYear(t) if MonthFromTime(t)=9
= DayWithinYear(t)−303(InLeapYear(t) if MonthFromTime(t)=10
= DayWithinYear(t)−333(InLeapYear(t) if MonthFromTime(t)=11
蛟九��譎る俣蛟､ t 縺ｮ譖懈律縺ｯ縺薙�繧医≧縺ｫ螳夂ｾｩ縺吶ｋ縲�
WeekDay(t) = (Day(t) + 4) modulo 7
譖懈律蛟､ 0 縺ｯ譌･譖懈律繧呈欠縺�; 1 縺ｯ譛域屆譌･繧呈欠縺�; 2 縺ｯ轣ｫ譖懈律繧呈欠縺�; 3 縺ｯ豌ｴ譖懈律繧呈欠縺�; 4 縺ｯ譛ｨ譖懈律繧呈欠縺�; 5 縺ｯ驥第屆譌･繧呈欠縺�; 6 縺ｯ蝨滓屆譌･繧呈欠縺吶� WeekDay(0) = 4 縺ｯ縲� 1970 蟷ｴ 1 譛� 1 譌･譛ｨ譖懈律 縺ｫ隧ｲ蠖薙☆繧九％縺ｨ縺ｫ豕ｨ諢上�
ECMAScript 螳溯｣��蝨ｰ譁ｹ隱ｿ謨ｴ譎ゅ�豎ｺ螳壹ｒ譛溷ｾ�＆繧後ｋ縲ょ慍譁ｹ隱ｿ謨ｴ譎ゅ�縲� UTC 縺ｫ霑ｽ蜉�縺励※蝨ｰ譁ｹ讓呎ｺ匁凾繧偵≠繧峨ｏ縺吶√Α繝ｪ遘偵〒貂ｬ繧峨ｌ繧句､ LocalTZA 縺ｧ縺ゅｋ縲ょ､ LocalTZA 縺ｯ譎る俣縺ｫ繧医▲縺ｦ縺ｯ螟峨ｏ繧峨↑縺�′縲∝慍逅�噪縺ｪ菴咲ｽｮ縺ｫ萓晏ｭ倥☆繧九�
ECMAScript 螳溯｣��縲∝､乗凾髢楢ｪｿ謨ｴ繧｢繝ｫ繧ｴ繝ｪ繧ｺ繝�縺ｮ豎ｺ螳壹ｒ譛溷ｾ�＆繧後ｋ縲ゅΑ繝ｪ遘偵〒貂ｬ繧峨ｌ繧句､乗凾髢楢ｪｿ謨ｴ DaylightSavingTA(t) 繧呈ｱｺ螳壹☆繧九い繝ｫ繧ｴ繝ｪ繧ｺ繝�縺ｯ縲∵ｬ｡縺ｮ 4 轤ｹ縺ｫ縺ｮ縺ｿ萓晏ｭ倥☆繧�:
(1)蟷ｴ縺ｮ髢句ｧ九°繧峨�譎る俣
t - TimeFromYear(YearFromTime(t))
(2)t 縺後≧繧九≧蟷ｴ縺九←縺�°
InLeapYear(t)
(3)蟷ｴ縺ｮ髢句ｧ九�譖懈律
WeekDay(TimeFromYear(YearFromTime(t))
(4)蝨ｰ逅�噪縺ｪ菴咲ｽｮ
ECMASciript 螳溯｣��豁｣遒ｺ縺ｪ譎る俣縺悟､乗凾髢薙↓蠕薙▲縺溘°蜷ｦ縺九�豎ｺ螳壹ｒ隧ｦ縺ｿ繧九∋縺阪〒縺ｯ縺ｪ縺�′縲√◎縺ｮ譎ら樟蝨ｨ縺ｮ螟乗凾髢薙い繝ｫ繧ｴ繝ｪ繧ｺ繝�縺御ｽｿ繧上ｌ縺ｦ縺�ｋ縺ｪ繧峨�縲∝､乗凾髢薙�蠖ｱ髻ｿ荳九↓縺ゅｋ縺九←縺�°縺ｮ豎ｺ螳壹ｒ隧ｦ縺ｿ繧九∋縺阪〒縺ゅｋ縲ゅ％繧後�蟷ｴ蝗槭ｊ縺ｧ螟乗凾髢薙ｒ隱阪ａ繧峨ｌ繧九Ο繧ｱ繝ｼ繝ｫ縺ｮ蟷ｴ繧定��縺吶ｋ繧医≧縺ｪ繧医≧縺ｪ辣ｩ髮代＆蝗樣∩縺吶ｋ (This avoids complications such as taking into account the years that the locale observed daylight saving time year round.)縲�
繝帙せ繝育腸蠅�′螟乗凾髢楢ｪｿ謨ｴ縺ｮ豎ｺ螳壹�讖溯�諤ｧ繧呈署萓帙☆繧九↑繧峨�縲� ECMAScript 螳溯｣��縲∝撫鬘後�蟷ｴ繧偵�繧ｹ繝育腸蠅�′螟乗凾髢楢ｪｿ謨ｴ諠��ｱ繧呈署萓帙☆繧句酔遲峨�蟷ｴ (蜷後§髢丞ｹｴ縺ｧ蜷後§譖懈律縺ｫ髢句ｧ九＠縺�ｋ蟷ｴ) 縺ｫ閾ｪ逕ｱ縺ｫ繝槭ャ繝励〒縺阪ｋ縲ょ酔遲峨〒縺ゅｋ蜈ｨ縺ｦ縺ｮ蟷ｴ縺悟酔縺倡ｵ先棡繧堤函謌舌☆繧九∋縺阪〒縺ゅｋ縺ｨ縺�≧縺薙→縺�縺大宛髯舌＆繧後ｋ縲�
UTC 縺九ｉ蝨ｰ譁ｹ譎ゅ∈縺ｮ螟画鋤縺ｯ
LocalTime(t) = t + LocalTZA + DaylightSavingTA(t)
蝨ｰ譁ｹ譎ゅ°繧� UTC 縺ｸ縺ｮ螟画鋤縺ｯ
UTC(t) = t - LocalTZA - DaylightSavingTA(t - LocalTZA)
UTC(LocalTime(t)) 縺ｯ蟶ｸ縺ｫ t 縺ｨ遲峨＠縺�→縺ｯ髯舌ｉ縺ｪ縺�％縺ｨ縺ｫ豕ｨ諢上�
谺｡縺ｮ髢｢謨ｰ縺梧凾髢灘､縺ｮ蛻�ｧ｣縺ｫ菴ｿ逕ｨ縺輔ｌ繧�:
HourFromTime(t) = floor(t / msPerHour) modulo HoursPerDay MinFromTime(t) = floor(t / msPerMinute) modulo MinutesPerHour SecFromTime(t) = floor(t / msPerSecond) modulo SecondsPerMinute msFromTime(t) = t modulo msPerSecond
縺昴ｌ縺槭ｌ谺｡縺ｮ繧医≧縺ｫ螳壹ａ繧�:
HoursPerDay = 24 MinutesPerHour = 60 SecondsPerMinute = 60 msPerSecond = 1000 msPerMinute = msPerSecond × SecondsPerMinute = 60000 msPerHour = msPerMinute × MinutesPerHour = 3600000
MakeTime 貍皮ｮ怜ｭ舌�縲� ECMAScript 謨ｰ蛟､ 縺ｧ縺ｪ縺代ｌ縺ｰ縺ｪ繧峨↑縺� 4 縺､縺ｮ蠑墓焚縺九ｉ縲√Α繝ｪ遘偵�謨ｰ繧堤ｮ怜�縺吶ｋ縲ゅ％縺ｮ貍皮ｮ怜ｭ舌�谺｡縺ｮ繧医≧縺ｫ讖溯�縺吶ｋ:
MakeDay 貍皮ｮ怜ｭ舌�縲� ECMAScript 謨ｰ蛟､ 縺ｧ縺ｪ縺代ｌ縺ｰ縺ｪ繧峨↑縺� 3 縺､縺ｮ蠑墓焚縺九ｉ縲∵律謨ｰ縺ｮ謨ｰ繧堤ｮ怜�縺吶ｋ縲ゅ％縺ｮ貍皮ｮ怜ｭ舌�谺｡縺ｮ繧医≧縺ｫ讖溯�縺吶ｋ:
MakeDate 貍皮ｮ怜ｭ舌�縲� ECMAScript 謨ｰ蛟､ 縺ｧ縺ｪ縺代ｌ縺ｰ縺ｪ繧峨↑縺� 2 縺､縺ｮ蠑墓焚縺九ｉ縲√Α繝ｪ遘偵�謨ｰ繧堤ｮ怜�縺吶ｋ縲ゅ％縺ｮ貍皮ｮ怜ｭ舌�谺｡縺ｮ繧医≧縺ｫ讖溯�縺吶ｋ:
TimeClip 貍皮ｮ怜ｭ舌�縲� ECMAScript 謨ｰ蛟､ 縺ｧ縺ｪ縺代ｌ縺ｰ縺ｪ繧峨↑縺�ｼ墓焚縺九ｉ縲√Α繝ｪ遘偵�謨ｰ繧堤ｮ怜�縺吶ｋ縲ゅ％縺ｮ貍皮ｮ怜ｭ舌�谺｡縺ｮ繧医≧縺ｫ讖溯�縺吶ｋ:
NOTE 繧ｹ繝�ャ繝� 3 縺ｮ繝昴う繝ｳ繝医�縲∵凾髢灘､縺ｮ蜀�Κ陦ｨ迴ｾ縲∽ｾ九∴縺ｰ 隨ｦ蜿ｷ莉倥″ 64 繝薙ャ繝域紛謨ｰ縲√∪縺溘� 64 繝薙ャ繝域ｵｮ蜍募ｰ乗焚轤ｹ謨ｰ縺ｮ蛟､縺ｮ驕ｸ謚槭ｒ螳溯｣�↓險ｱ蜿ｯ縺吶ｋ縺薙→縺ｧ縺ゅｋ縲ょｮ溯｣�↓萓晏ｭ倥＠縺ｦ縲√％縺ｮ蜀�Κ陦ｨ迴ｾ縺ｯ −0 縺ｨ +0 繧貞玄蛻･縺励※繧ゅ＠縺ｪ縺上※繧ゅｈ縺��
繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｨ縺励※縺ｧ縺ｯ縺ｪ縺城未謨ｰ縺ｨ縺励※ Date 縺悟他蜃ｺ縺輔ｌ繧九→縺阪√◎繧後�迴ｾ蝨ｨ譎る俣 (UTC) 縺ｮ縺ゅｉ繧上☆譁�ｭ怜�繧定ｿ斐☆縲�
NOTE 髢｢謨ｰ蜻ｼ蜃ｺ縺� Date(...) 縺ｨ縲∝酔縺伜ｼ墓焚繧呈戟縺､繧ｪ繝悶ず繧ｧ繧ｯ繝育函謌仙ｼ� new Date(...) 縺ｯ縲∫ｭ我ｾ｡縺ｧ縺ｯ縺ｪ縺��
縺吶∋縺溘�蠑墓焚縺ｯ驕ｸ謚樒噪縺ｧ縺ゅｋ; 萓帷ｵｦ縺輔ｌ縺溷ｼ墓焚縺ｯ蜿励￠莉倥￠繧九′縲√◎繧御ｻ･螟悶�辟｡隕悶＆繧後ｋ縲よ枚蟄怜�縺檎函謌舌＆繧後∝ｼ� (new Date()).toString() 縺ｫ繧医ｋ繧ゅ�縺ｨ蜷梧ｧ倥�邨先棡縺瑚ｿ斐＆繧後ｋ縲�
Date 縺� new 蠑上�荳驛ｨ縺ｨ縺励※蜻ｼ縺ｰ繧後ｋ蝣ｴ蜷医√◎繧後�繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｧ縺ゅｋ; 譁ｰ隕上↓繧ｪ繝悶ず繧ｧ繧ｯ繝医ｒ逕滓�縺励∝�譛溷喧縺吶ｋ縲�
Date 縺� 2 蛟九°繧� 7 蛟九�蠑墓焚縺ｧ蜻ｼ蜃ｺ縺輔ｌ繧九→縺阪� year, month, (莉･荳矩∈謚樒噪縺ｫ) date, hours, minutes, seconds , ms 縺九ｉ縲∵律莉倥ｒ邂怜�縺吶ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Prototype]] 繝励Ο繝代ユ繧｣縺ｯ縲� Date.prototype (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.9.4.1) 縺ｮ蛻晄悄蛟､縺ｧ縺ゅｋ縲√が繝ｪ繧ｸ繝翫Ν縺ｮ Date 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医↓險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Class]] 繝励Ο繝代ユ繧｣縺ｯ縲� "Date" 縺ｫ險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Value]] 繝励Ο繝代ユ繧｣縺ｯ谺｡縺ｮ繧医≧縺ｫ險ｭ螳壹＆繧後ｋ:
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Prototype]] 繝励Ο繝代ユ繧｣縺ｯ縲� Date.prototype (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.9.4.1) 縺ｮ蛻晄悄蛟､縺ｧ縺ゅｋ縲√が繝ｪ繧ｸ繝翫Ν縺ｮ Date 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医↓險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Class]] 繝励Ο繝代ユ繧｣縺ｯ縲� "Date" 縺ｫ險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Value]] 繝励Ο繝代ユ繧｣縺ｯ谺｡縺ｮ繧医≧縺ｫ險ｭ螳壹＆繧後ｋ:
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Prototype]] 繝励Ο繝代ユ繧｣縺ｯ縲� Date.prototype (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.9.4.1) 縺ｮ蛻晄悄蛟､縺ｧ縺ゅｋ縲√が繝ｪ繧ｸ繝翫Ν縺ｮ Date 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医↓險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Class]] 繝励Ο繝代ユ繧｣縺ｯ縲� "Date" 縺ｫ險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Value]] 繝励Ο繝代ユ繧｣縺ｯ縲∫樟蝨ｨ譎る俣 (UTC) 縺ｫ險ｭ螳壹＆繧後ｋ縲�
Date 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｮ蜀�Κ [[Prototype]] 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� Function 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝� (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.3.4) 縺ｧ縺ゅｋ縲�
蜀�Κ繝励Ο繝代ユ繧｣縺ｨ length 繝励Ο繝代ユ繧｣ (蛟､縺ｯ 7) 縺ｮ莉悶↓縲� Date 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｯ谺｡縺ｮ繝励Ο繝代ユ繧｣繧呈戟縺､縲�
Date.prototype 縺ｮ蛻晄悄蛟､縺ｯ縲� Date 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝� (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.9.5) 縺ｧ縺ゅｋ縲�
縺薙�繝励Ο繝代ユ繧｣縺ｯ縲∝ｱ樊ｧ { DontEnum, DontDelete, ReadOnly } 繧呈戟縺､縲�
parse 髢｢謨ｰ縺ｯ縲∝ｼ墓焚縺ｫ ToString 貍皮ｮ怜ｭ舌ｒ驕ｩ逕ｨ縺励∫ｵ先棡縺ｮ譁�ｭ怜�繧呈律莉倥→縺励※隗｣譫舌☆繧�; 謨ｰ縲√◎縺ｮ譌･縺ｫ隧ｲ蠖薙☆繧� UTC 譎る俣蛟､繧定ｿ斐☆縲よ枚蟄怜�縺ｯ蝨ｰ譁ｹ譎ゅ� UTC 譎ゅ∽ｻ悶�繧ｿ繧､繝�繧ｾ繝ｼ繝ｳ縺ｮ譎る俣縺ｮ縺ｩ繧瑚ｧ｣譫舌＆繧後※繧ゅｈ縺上∵枚蟄怜�縺ｮ蜀�ｮｹ縺ｫ萓晏ｭ倥☆繧九�
蛟九��ECMAScript 螳溯｣�ｸｭ縺ｧ 繝溘Μ遘偵′ 0 縺ｧ縺ゅｋ Date 繧ｪ繝悶ず繧ｧ繧ｯ繝医ｒ x 縺ｨ縺吶ｋ縺ｪ繧峨�縲∵ｬ｡縺ｮ蜈ｨ縺ｦ縺ｮ蠑上′縺昴�螳溯｣�ｸｭ縺ｧ蜷後§謨ｰ蟄励ｒ逕滓�縺吶ｋ縲ょ�縺ｦ縺ｮ蜿ら�莉倥￠繧峨ｌ縺溘�繝ｭ繝代ユ繧｣縺悟�譛溷､繧呈戟縺､縺ｪ繧峨�縲� then all of the following expressions should produce the same numeric value in that implementation, if all the properties referenced have their initial values:
x.valueOf() Date.parse(x.toString()) Date.parse(x.toUTCString())
縺励°縺励↑縺後ｉ縲∝ｼ�
Date.parse(x.toLocaleString())
縺ｯ蜑阪�3縺､縺ｮ蠑上→蜷後§謨ｰ蛟､縺ｮ逕滓�繧定ｦ∵ｱゅ＆繧後↑縺�ゆｸ闊ｬ縺ｫ縲√◎縺ｮ螳溯｣�� toString 縺� toUTCString 繝｡繧ｽ繝�ラ縺ｫ繧医▲縺ｦ逕滓�縺輔ｌ縺医↑縺�枚蟄怜�繧剃ｸ弱∴繧峨ｌ縺溘→縺阪� Date.parse 縺ｫ逕滓�縺輔ｌ繧句､縺ｯ縲∝ｮ溯｣�ｾ晏ｭ倥〒縺ゅｋ縲�
UTC 髢｢謨ｰ縺� 2 蛟九↓貅縺溘↑縺�ｼ墓焚縺ｧ蜻ｼ蜃ｺ縺輔ｌ縺溘→縺阪∵険繧玖�縺��螳溯｣�ｾ晏ｭ倥〒縺ゅｋ縲� UTC 髢｢謨ｰ縺� 2 蛟九°繧� 7 蛟九�蠑墓焚縺ｧ蜻ｼ蜃ｺ縺輔ｌ繧九→縺阪�year, month, (莉･荳矩∈謚樒噪縺ｫ) date, hours, minutes, seconds, ms 縺九ｉ縲∵律莉倥ｒ邂怜�縺吶ｋ縲� 谺｡縺ｮ繧ｹ繝�ャ繝励′蜿悶ｉ繧後ｋ:
UTC 髢｢謨ｰ縺ｮ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 7 縺ｧ縺ゅｋ縲�
NOTE UTC 髢｢謨ｰ縺ｯ Date 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｨ縺ｯ 2 縺､縺ｮ轤ｹ縺ｧ逡ｰ縺ｪ繧�: Date 繧ｪ繝悶ず繧ｧ繧ｯ繝育函謌舌→縺励※縺ｧ縺ｯ縺ｪ縺上∵焚縺ｨ縺励※譎る俣蛟､繧定ｿ斐☆縲ゅ◎縺励※蝨ｰ譁ｹ譎ゅ〒縺ｪ縺� UTC 縺ｧ蠑墓焚繧定ｧ｣譫舌☆繧九�
Date 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医�縲√◎繧瑚�霄ｫ縺悟､ NaN 縺ｮ Date 繧ｪ繝悶ず繧ｧ繧ｯ繝� ([[Class]] 縺� "Date") 縺ｧ縺ゅｋ縲�
Date 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医�蜀�Κ [[Prototype]] 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� Object 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝� (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.2.3.1) 縺ｧ縺ゅｋ縲�
縺薙�蠕後� Date 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医�繝励Ο繝代ユ繧｣縺ｧ縺ゅｋ髢｢謨ｰ縺ｮ隱ｬ譏弱↓縺翫＞縺ｦ縲√ヵ繝ｬ繝ｼ繧ｺ "縺薙� Date 繧ｪ繝悶ず繧ｧ繧ｯ繝�" 縺ｯ縲�未謨ｰ蜻ｼ蜃ｺ縺励� this 蛟､縺ｧ縺ゅｋ繧ｪ繝悶ず繧ｧ繧ｯ繝医ｒ蜿ら�縺吶ｋ縲よｱ守畑逧�↑髢｢謨ｰ縺ｯ縺ｪ縺�; this 縺悟�驛ｨ [[Class]] 繝励Ο繝代ユ繧｣縺ｮ蛟､縺� "Date" 縺ｧ縺ゅｋ繧ｪ繝悶ず繧ｧ繧ｯ繝医〒縺ｯ縺ｪ縺�↑繧峨�縲∽ｾ句､� TypeError 繧呈兜縺偵ｋ縲ゅ∪縺溘√ヵ繝ｬ繝ｼ繧ｺ "縺薙�譎る俣蛟､" 縺ｯ縲√％縺ｮ Date 繧ｪ繝悶ず繧ｧ繧ｯ繝医↓陦ｨ縺輔ｌ繧区凾髢薙�謨ｰ蛟､縲√☆縺ｪ繧上■縲√％縺ｮ Date 繧ｪ繝悶ず繧ｧ繧ｯ繝医�蜀�Κ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧貞盾辣ｧ縺吶ｋ縲�
Date.prototype.constructor 縺ｮ蛻晄悄蛟､縺ｯ縲∫ｵ�ｾｼ縺ｿ Date 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｧ縺ゅｋ縲�
縺薙�髢｢謨ｰ縺ｯ譁�ｭ怜�蛟､繧定ｿ斐☆縲よ枚蟄怜�縺ｮ蜀�ｮｹ縺ｯ螳溯｣�ｾ晏ｭ倥〒縺ゅｋ縺後∫樟蝨ｨ縺ｮ繧ｿ繧､繝�繧ｾ繝ｼ繝ｳ縺ｮ縲∫ｰ｡萓ｿ縺ｧ莠ｺ髢薙↓隱ｭ隗｣蜿ｯ閭ｽ縺ｪ蠖｢蠑上� Date 縺ｮ陦ｨ迴ｾ縺梧э蝗ｳ縺輔ｌ繧九�
NOTE 莉ｻ諢上� Date 蛟､ d 縺ｫ縺､縺�※縲� Date.prototype.parse(d.toString()) (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.9.4.2) 縺ｮ邨先棡縺� d 縺ｨ遲峨＠縺�％縺ｨ縺梧э蝗ｳ縺輔ｌ繧九�
縺薙�髢｢謨ｰ縺ｯ譁�ｭ怜�蛟､繧定ｿ斐☆縲よ枚蟄怜�縺ｮ蜀�ｮｹ縺ｯ螳溯｣�ｾ晏ｭ倥〒縺ゅｋ縺後∫樟蝨ｨ縺ｮ繧ｿ繧､繝�繧ｾ繝ｼ繝ｳ縺ｮ縲∫ｰ｡萓ｿ縺ｧ莠ｺ髢薙↓隱ｭ隗｣蜿ｯ閭ｽ縺ｪ蠖｢蠑上� Date 縺ｮ "date" 謌仙�縺ｮ陦ｨ迴ｾ縺梧э蝗ｳ縺輔ｌ繧九�
縺薙�髢｢謨ｰ縺ｯ譁�ｭ怜�蛟､繧定ｿ斐☆縲よ枚蟄怜�縺ｮ蜀�ｮｹ縺ｯ螳溯｣�ｾ晏ｭ倥〒縺ゅｋ縺後∫樟蝨ｨ縺ｮ繧ｿ繧､繝�繧ｾ繝ｼ繝ｳ縺ｮ縲∫ｰ｡萓ｿ縺ｧ莠ｺ髢薙↓隱ｭ隗｣蜿ｯ閭ｽ縺ｪ蠖｢蠑上� Date 縺ｮ "time" 謌仙�縺ｮ陦ｨ迴ｾ縺梧э蝗ｳ縺輔ｌ繧九�
縺薙�髢｢謨ｰ縺ｯ譁�ｭ怜�蛟､繧定ｿ斐☆縲よ枚蟄怜�縺ｮ蜀�ｮｹ縺ｯ螳溯｣�ｾ晏ｭ倥〒縺ゅｋ縺後∫樟蝨ｨ縺ｮ繧ｿ繧､繝�繧ｾ繝ｼ繝ｳ縺ｮ縲∫ｰ｡萓ｿ縺ｧ莠ｺ髢薙↓隱ｭ隗｣蜿ｯ閭ｽ縺ｪ縲√�繧ｹ繝育腸蠅��迴ｾ蝨ｨ縺ｮ繝ｭ繧ｱ繝ｼ繝ｫ縺ｮ諷｣鄙偵↓隧ｲ蠖薙☆繧句ｽ｢蠑上� Date 縺ｮ陦ｨ迴ｾ縺梧э蝗ｳ縺輔ｌ繧九�
NOTE 縺薙�髢｢謨ｰ縺ｮ隨ｬ荳蠑墓焚縺ｯ縲√％縺ｮ讓呎ｺ悶�蟆�擂縺ｮ繝舌�繧ｸ繝ｧ繝ｳ縺ｧ菴ｿ逕ｨ縺輔ｌ繧句庄閭ｽ諤ｧ縺後≠繧�; 螳溯｣��縺薙�繝代Λ繝｡繝ｼ繧ｿ繧剃ｻ悶�逕ｨ騾斐↓菴ｿ逕ｨ縺励↑縺�％縺ｨ繧呈耳螂ｨ縺輔ｌ繧九�
縺薙�髢｢謨ｰ縺ｯ譁�ｭ怜�蛟､繧定ｿ斐☆縲よ枚蟄怜�縺ｮ蜀�ｮｹ縺ｯ螳溯｣�ｾ晏ｭ倥〒縺ゅｋ縺後∫樟蝨ｨ縺ｮ繧ｿ繧､繝�繧ｾ繝ｼ繝ｳ縺ｮ縲∫ｰ｡萓ｿ縺ｧ莠ｺ髢薙↓隱ｭ隗｣蜿ｯ閭ｽ縺ｪ縲√�繧ｹ繝育腸蠅��迴ｾ蝨ｨ縺ｮ繝ｭ繧ｱ繝ｼ繝ｫ縺ｮ諷｣鄙偵↓隧ｲ蠖薙☆繧句ｽ｢蠑上� Date 縺ｮ "date" 謌仙�縺ｮ陦ｨ迴ｾ縺梧э蝗ｳ縺輔ｌ繧九�
NOTE 縺薙�髢｢謨ｰ縺ｮ隨ｬ荳蠑墓焚縺ｯ縲√％縺ｮ讓呎ｺ悶�蟆�擂縺ｮ繝舌�繧ｸ繝ｧ繝ｳ縺ｧ菴ｿ逕ｨ縺輔ｌ繧句庄閭ｽ諤ｧ縺後≠繧�; 螳溯｣��縺薙�繝代Λ繝｡繝ｼ繧ｿ繧剃ｻ悶�逕ｨ騾斐↓菴ｿ逕ｨ縺励↑縺�％縺ｨ繧呈耳螂ｨ縺輔ｌ繧九�
縺薙�髢｢謨ｰ縺ｯ譁�ｭ怜�蛟､繧定ｿ斐☆縲よ枚蟄怜�縺ｮ蜀�ｮｹ縺ｯ螳溯｣�ｾ晏ｭ倥〒縺ゅｋ縺後∫樟蝨ｨ縺ｮ繧ｿ繧､繝�繧ｾ繝ｼ繝ｳ縺ｮ縲∫ｰ｡萓ｿ縺ｧ莠ｺ髢薙↓隱ｭ隗｣蜿ｯ閭ｽ縺ｪ縲√�繧ｹ繝育腸蠅��迴ｾ蝨ｨ縺ｮ繝ｭ繧ｱ繝ｼ繝ｫ縺ｮ諷｣鄙偵↓隧ｲ蠖薙☆繧句ｽ｢蠑上� Date 縺ｮ "time" 謌仙�縺ｮ陦ｨ迴ｾ縺梧э蝗ｳ縺輔ｌ繧九�
NOTE 縺薙�髢｢謨ｰ縺ｮ隨ｬ荳蠑墓焚縺ｯ縲√％縺ｮ讓呎ｺ悶�蟆�擂縺ｮ繝舌�繧ｸ繝ｧ繝ｳ縺ｧ菴ｿ逕ｨ縺輔ｌ繧句庄閭ｽ諤ｧ縺後≠繧�; 螳溯｣��縺薙�繝代Λ繝｡繝ｼ繧ｿ繧剃ｻ悶�逕ｨ騾斐↓菴ｿ逕ｨ縺励↑縺�％縺ｨ繧呈耳螂ｨ縺輔ｌ繧九�
valueOf 髢｢謨ｰ縺ｯ縲√％縺ｮ譎る俣蛟､縺ｧ縺ゅｋ謨ｰ蛟､繧定ｿ斐☆縲�
this 蛟､縺� [[Class]] 繝励Ο繝代ユ繧｣縺� "Date" 縺ｮ繧ｪ繝悶ず繧ｧ繧ｯ繝医〒縺ｪ縺�↑繧峨�縲� 萓句､� TypeError 繧呈兜縺偵ｋ縲�蝨ｰ譁ｹ譎ゅ→ UTC 譎ゅ�蟾ｮ繧貞�縺ｧ霑斐☆縲�
this 蛟､縺� Date 繧ｪ繝悶ず繧ｧ繧ｯ繝医〒縺ｪ縺�↑繧峨�縲� 萓句､� TypeError 繧呈兜縺偵ｋ縲�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧� Result(2) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､ 繧定ｿ斐☆縲�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧� TimeClip(Result(4)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧� TimeClip(Result(4)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�ms 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� ms 縺ｫ getMilliseconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧� TimeClip(Result(5)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setSeconds 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 2 縺ｧ縺ゅｋ縲�
ms 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� ms 縺ｫ getUTCMilliseconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧� TimeClip(Result(5)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setUTCSeconds 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 2 縺ｧ縺ゅｋ縲�
sec 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� sec 縺ｫ getSeconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
ms 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� ms 縺ｫ getMilliseconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(6)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setMinutes 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 3 縺ｧ縺ゅｋ縲�
sec 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� sec 縺ｫ蛟､ getUTCSeconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
ms 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� ms 縺ｫ蛟､ getUTCMilliseconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(6)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setUTCMinutes 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 3 縺ｧ縺ゅｋ縲�
min 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� min 縺ｫ getMinutes( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
sec 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� sec 縺ｫ getSeconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
ms 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� ms 縺ｫ getMilliseconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(7)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setHours 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 4 縺ｧ縺ゅｋ縲�
min 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� min 縺ｫ getUTCMinutes( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
sec 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲�sec 縺ｫ getUTCSeconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
ms 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� ms 縺ｫ getUTCMilliseconds( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(7)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setUTCHours 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 4 縺ｧ縺ゅｋ縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(4)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(4)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�date 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� date 縺ｫ getDate( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(5)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setMonth 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 2 縺ｧ縺ゅｋ縲�
date 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� date 縺ｫ getUTCDate( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(5)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setUTCMonth 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 2 縺ｧ縺ゅｋ縲�
month 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� month 縺ｫ getMonth( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
date 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� date 縺ｫ getDate( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(6)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､ 繧定ｿ斐☆縲�setFullYear 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 3 縺ｧ縺ゅｋ縲�
month 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� month 縺ｫ getUTCMonth( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
date 縺梧欠螳壹＆繧後↑縺�↑繧峨�縲� date 縺ｫ getUTCDate( ) 縺ｮ蛟､繧呈欠螳壹＆繧後◆繧医≧縺ｫ謖ｯ闊槭≧縲�
this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣繧偵� TimeClip(Result(6)) 縺ｫ險ｭ螳壹☆繧九�this 蛟､縺ｮ [[Value]] 繝励Ο繝代ユ繧｣縺ｮ蛟､繧定ｿ斐☆縲�setUTCFullYear 繝｡繧ｽ繝�ラ縺ｮ length 繝励Ο繝代ユ繧｣縺ｯ 3 縺ｧ縺ゅｋ縲�
縺薙�髢｢謨ｰ縺ｯ譁�ｭ怜�蛟､繧定ｿ斐☆縲よ枚蟄怜�縺ｮ蜀�ｮｹ縺ｯ螳溯｣�ｾ晏ｭ倥〒縺ゅｋ縺後� UTC 縺ｮ縲∫ｰ｡萓ｿ縺ｧ莠ｺ髢薙↓隱ｭ隗｣蜿ｯ閭ｽ縺ｪ蠖｢蠑上� Date 縺ｮ陦ｨ迴ｾ縺梧э蝗ｳ縺輔ｌ繧九�
Date 繧､繝ｳ繧ｹ繧ｿ繝ｳ繧ｹ縺ｯ縲� Date 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医°繧臥ｶ呎価縺励◆繝励Ο繝代ユ繧｣縺ｮ荳翫↓縲∫音縺ｫ繝励Ο繝代ユ繧｣繧呈戟縺溘↑縺��