譛ャ鬆√�逶ョ谺。 逶ョ谺。

15.1 Global 繧ェ繝悶ず繧ァ繧ッ繝� (The Global Object)

繧ー繝ュ繝シ繝舌Ν繧ェ繝悶ず繧ァ繧ッ繝医� [[Construct]] 繝励Ο繝代ユ繧」繧呈戟縺溘↑縺�; new 貍皮ョ怜ュ舌r豺サ縺医※繧ウ繝ウ繧ケ繝医Λ繧ッ繧ソ縺ィ縺励※繧ー繝ュ繝シ繝舌Ν繧ェ繝悶ず繧ァ繧ッ繝医r菴ソ逕ィ縺吶k縺薙→縺ッ縺ァ縺阪↑縺�€�

繧ー繝ュ繝シ繝舌Ν繧ェ繝悶ず繧ァ繧ッ繝医� [[Call]] 繝励Ο繝代ユ繧」繧呈戟縺溘↑縺�€る未謨ー縺ィ縺励※繧ー繝ュ繝シ繝舌Ν繧ェ繝悶ず繧ァ繧ッ繝医r蜻シ縺ウ蜃コ縺吶%縺ィ縺ッ縺ァ縺阪↑縺�€�

繧ー繝ュ繝シ繝舌Ν繧ェ繝悶ず繧ァ繧ッ繝医� [[Prototype]] 蜿翫� [[Class]] 繝励Ο繝代ユ繧」縺ョ蛟、縺ッ螳溯」�セ晏ュ倥〒縺ゅk縲�

15.1.1 Global 繧ェ繝悶ず繧ァ繧ッ繝医�蛟、繝励Ο繝代ユ繧」 (Value Properties of the Global Object)

15.1.1.1 NaN

Nan 縺ョ蛻晄悄蛟、縺ッ NaN (繧サ繧ッ繧キ繝ァ繝ウ 8.5) 縺ァ縺ゅk縲ゅ%縺ョ繝励Ο繝代ユ繧」縺ョ螻樊€ァ縺ッ { DontEnum, DontDelete } 縺ァ縺ゅk縲�

15.1.1.2 Infinity

Infinity 縺ョ蛻晄悄蛟、縺ッ +竏� (繧サ繧ッ繧キ繝ァ繝ウ 8.5) 縺ァ縺ゅk縲ゅ%縺ョ繝励Ο繝代ユ繧」縺ョ螻樊€ァ縺ッ { DontEnum, DontDelete } 縺ァ縺ゅk縲�

15.1.1.3 undefined

undefined 縺ョ蛻晄悄蛟、縺ッ undefined (繧サ繧ッ繧キ繝ァ繝ウ 8.1) 縺ァ縺ゅk縲ゅ%縺ョ繝励Ο繝代ユ繧」縺ョ螻樊€ァ縺ッ { DontEnum, DontDelete } 縺ァ縺ゅk縲�

15.1.2 Global 繧ェ繝悶ず繧ァ繧ッ繝医�髢「謨ー繝励Ο繝代ユ繧」 (Function Properties of the Global Object)

15.1.2.1 eval (x)

eval 髢「謨ー縺悟シ墓焚 x 縺ァ蜻シ蜃コ縺輔l繧九→縺阪€∵ャ。縺ョ繧ケ繝�ャ繝励′蜿悶i繧後k:

  1. x 縺梧枚蟄怜�蛟、縺ァ縺ェ縺代l縺ー縲� x 繧定ソ斐☆縲�
  2. x 繧� Program 縺ィ縺励※隗」譫舌☆繧九€りァ」譫舌↓螟ア謨励@縺溘i縲∽セ句、� SyntaxError 繧呈兜縺偵k (繧サ繧ッ繧キ繝ァ繝ウ 16 繧ょ盾辣ァ)縲�
  3. 繧ケ繝�ャ繝� 2 縺九i繝励Ο繧ー繝ゥ繝�繧定ゥ穂セ。縲�
  4. Result(3).type 縺� normal 縺九▽縺昴� completion 蛟、縺悟€、 V 縺ェ繧峨�縲∝€、 V 繧定ソ斐☆縲�
  5. Result(3).type 縺� normal 縺九▽縺昴� completion 蛟、縺� empty 縺ェ繧峨�縲∝€、 undefined 繧定ソ斐☆縲�
  6. Result(3).type 縺ッ throw 縺ョ縺ッ縺壹〒縺ゅk縲ゆセ句、悶→縺励※ Result(3).value 繧呈兜縺偵k縲�

eval 繝励Ο繝代ユ繧」縺ョ蛟、縺ッ逶エ謗・蜻シ蜃コ縺嶺サ・螟� (縺、縺セ繧翫€� CallExpression 荳ュ縺ョ MenberExpression 縺ァ縺ゅk Identifier 縺ィ縺励※縺ョ縺昴�蜷榊燕縺ョ譏守、コ逧�↑蛻ゥ逕ィ縺ォ繧医k莉・螟�) 縺ョ莉サ諢上�譁ケ豕輔〒逕ィ縺�i繧後k縺九€√∪縺溘� eval 繝励Ο繝代ユ繧」縺ォ蜑イ繧雁ス薙※繧峨l縺ヲ縺�l縺ー縲∽セ句、� EvalError 繧呈兜縺偵※繧医>縲�

15.1.2.2 parseInt (string , radix)

parseInt 髢「謨ー縺ッ縲� radix 縺ョ謖�ョ壹↓縺励◆縺後>蠑墓焚 string 縺ョ蜀�ョケ繧定ァ」驥医@縺ヲ蛻、螳壹&繧後k謨エ謨ー蛟、繧堤函謌舌☆繧九€よ枚蟄怜�蜀��蜈郁。後☆繧狗ゥコ逋ス譁�ュ励�辟。隕悶&繧後k縲� radix 縺� undefined 縺セ縺溘� 0 縺ェ繧峨�縲√◎繧後� 10 縺ィ莉ョ螳壹&繧後k縲ゅ◎縺ョ謨ー蟄励′譁�ュ� 0x 縺セ縺溘� 0X 縺ァ蟋九∪繧句�エ蜷医� radix 縺ッ 16 縺ィ莉ョ螳壹&繧後k縲ゆササ諢上� radix-16 謨ー縺ッ譁�ュ� 0x 縺セ縺溘� 0X 縺ァ蟋九∪縺」縺ヲ繧ゅh縺�€�

parseInt 髢「謨ー縺悟他蜃コ縺輔l繧九→縲∵ャ。縺ョ繧ケ繝�ャ繝励′蜿悶i繧後k:

  1. ToString(string) 繧貞他蜃コ縺吶€�
  2. S 繧呈眠隕上↓逕滓�縺励◆ Result(1) 縺ョ驛ィ蛻�枚蟄怜�縺ィ縺励€� StrWhiteSpaceChar 縺ァ縺ェ縺�怙蛻昴�譁�ュ励→縺昴l莉・髯阪�蜈ィ縺ヲ縺ョ譁�ュ励°繧峨↑繧九€� (險€縺�鋤縺医k縺ィ縲∝�陦後☆繧狗ゥコ逋ス繧帝勁蜴サ縺吶k縲�)
  3. sign 繧� 1 縺ィ縺吶k縲�
  4. S 縺檎ゥコ縺ァ縺ェ縺上€√°縺、 S 縺ョ譛€蛻昴�譁�ュ励′繝槭う繝翫せ險伜捷 - 縺ェ繧峨�縲� sign 繧� -1 縺ィ縺吶k縲�
  5. S 縺檎ゥコ縺ァ縺ェ縺上€√°縺、 S 縺ョ譛€蛻昴�譁�ュ励′繝励Λ繧ケ險伜捷 + 縺セ縺溘�繝槭う繝翫せ險伜捷 - 縺ェ繧峨�縲� S 縺九i譛€蛻昴�譁�ュ励r髯、蜴サ縺吶k縲�
  6. R = ToInt32(radix) 縺ィ縺吶k縲�
  7. R = 0 縺ェ繧峨�縲� 繧ケ繝�ャ繝� 11 縺ク縲�
  8. R < 2 縺セ縺溘� R > 36 縺ェ繧峨�縲� NaN 繧定ソ斐☆縲�
  9. R = 16 縺ェ繧峨�縲� 繧ケ繝�ャ繝� 13 縺ク縲�
  10. 繧ケ繝�ャ繝� 14 縺ク縲�
  11. R = 10 縺ィ縺吶k縲�
  12. S 縺ョ髟キ縺輔′蟆代↑縺上→繧� 1 縺ァ縲√°縺、 S 縺ョ譛€蛻昴�譁�ュ励′ "0" 縺ェ繧峨�縲∝ョ溯」��陬�㍼縺ァ R = 8 縺ィ縺吶k縺九€√≠繧九>縺ッ R 繧貞、画峩縺帙★縺昴�縺セ縺セ縺ォ縺吶k縲�
  13. S 縺ョ髟キ縺輔′蟆代↑縺上→繧� 2 縺ァ縲√°縺、 S 縺ョ譛€蛻昴� 2 譁�ュ励′ "0x" 縺� "0X" 縺ェ繧峨�縲√◎縺ョ譛€蛻昴� 2 譁�ュ励r S 縺九i蜿悶j髯、縺阪€� R = 16 縺ィ縺吶k縲�
  14. S 縺� R 騾イ謨ー謨ー蟄励〒縺ェ縺�ササ諢上�譁�ュ励r蜷ォ繧€縺ェ繧峨�縲� Z 繧偵€√◎縺ョ譁�ュ励′蜃コ迴セ縺吶k繧医j蜑阪�蜈ィ縺ヲ縺ョ譁�ュ励°繧峨↑繧� S 縺ョ驛ィ蛻�枚蟄怜�縺ィ縺吶k; 縺昴≧縺ァ縺ェ縺代l縺ー縲� Z 繧� S 縺ィ縺吶k縲�
  15. Z 縺檎ゥコ縺ェ繧峨�縲� NaN 繧定ソ斐☆縲�
  16. 蛟、 10 縺九i 35 縺セ縺ァ縺ョ謨ー蟄励↓譁�ュ� A-Z 縺ィ a-z 繧剃スソ逕ィ縺吶k R 騾イ謨ー陦ィ險倥↓縺ヲ Z 縺ァ陦ィ縺輔l繧九€∵焚蟄ヲ逧�紛謨ー繧堤ョ怜�縺吶k縲� (縺励°縺励↑縺後i, if R 縺� 10 縺ァ縲√°縺、 Z 縺� 20 譯∽サ・荳翫〒縺ゅk縺ェ繧峨�縲� 20 譯∫岼莉・髯阪�蜷�。√�謨ー蟄励�縲∝ョ溯」��驕ク謚槭〒謨ー蟄� 0 縺ァ鄂ョ謠帙@縺ヲ繧医>; 縺昴@縺ヲ R 縺� 2, 4, 8, 10, 16, 32 莉・螟悶↑繧峨�縲� Result(16) 縺ッ縲� R 騾イ謨ー陦ィ險倥↓縺ヲ Z 縺ァ陦ィ縺輔l繧区焚蟄ヲ逧�紛謨ー蛟、縺ョ螳溯」�セ晏ュ倥�霑台シシ蛟、縺ァ縺ゅ▲縺ヲ繧医>縲�)
  17. Result(16) 縺ョ謨ー蛟、繧堤ョ怜�縺吶k縲�
  18. sign × Result(17) 繧定ソ斐☆縲�

NOTE parseInt 縺ッ縲∵枚蟄怜�縺ョ蜈郁。後☆繧区�蛻�□縺代r謨エ謨ー蛟、縺ィ縺励※隗」驥医@縺ヲ繧医>; 縺昴l縺ッ謨エ謨ー陦ィ險倥�荳€驛ィ縺ィ縺励※隗」驥医〒縺阪↑縺�ササ諢上�譁�ュ励r辟。隕悶@縲√◎縺ョ繧医≧縺ェ譁�ュ励′辟。隕悶&繧後◆縺薙→縺ョ縺�°縺ェ繧句セエ蛟吶b荳弱∴繧峨l縺ェ縺�€�

radix 縺� 0 縺セ縺溘� undefined 縺ァ縺ゅj縲� string 縺ョ謨ー縺梧焚蟄� 0 縺ァ蟋九∪繧� x 繧� X 繧らカ壹°縺ェ縺�→縺阪€∝ョ溯」��縲∬�逕ア縺ェ蛻、譁ュ縺ァ縲∵焚繧� 8 騾イ謨ー縺ィ繧� 10 騾イ謨ー縺ィ繧りァ」驥医@縺ヲ繧医>縲ょョ溯」��縺薙�蝣エ蜷医€� 10 騾イ謨ー縺ィ縺励※謨ー繧定ァ」驥医☆繧九%縺ィ縺梧耳螂ィ縺輔l繧九€�

15.1.2.3 parseFloat (string)

parseFloat 髢「謨ー縺ッ縲� 10 騾イ謨ー繝ェ繝�Λ繝ォ縺ィ縺励※蠑墓焚 string 縺ョ蜀�ョケ隗」譫仙勣縺ォ譖ク縺榊叙繧峨l繧区焚蛟、繧堤函謌舌☆繧九€�

parseFloat 髢「謨ー縺悟他蜃コ縺輔l繧九→縲∵ャ。縺ョ繧ケ繝�ャ繝励′蜿悶i繧後k:

  1. ToString(string) 繧貞他蜃コ縺吶€�
  2. StrWhiteSpaceChar 縺ァ縺ェ縺�怙蟾ヲ縺ョ譁�ュ励→縺昴�蜿ウ蛛エ縺ョ蜈ィ縺ヲ縺ョ譁�ュ励°繧峨↑繧九€� Result(1) 縺ョ驛ィ蛻�枚蟄怜�繧堤ョ怜�縺吶k縲� (險€縺�鋤縺医k縺ィ縲∝�陦後☆繧狗ゥコ逋ス繧帝勁蜴サ縺吶k縲�)
  3. Result(2) 繧ゅ€� Result(2) 縺ョ蜈磯�ュ縺九i縺ョ莉サ諢上�驛ィ蛻�枚蟄怜�繧� StrDecimalLiteral 縺ョ讒区枚 (9.3.1 蜿ら�) 繧呈コ€縺溘&縺ェ縺�↑繧峨�縲� NaN 繧定ソ斐☆縲�
  4. StrDecimalLiteral 縺ョ讒区枚繧呈コ€縺溘☆縲� Result(2) 縺ョ蜈磯�ュ縺九i縺ョ譛€髟キ驛ィ蛻�枚蟄怜�繧堤ョ怜�縺吶k縲� Result(2) 閾ェ霄ォ縺ァ繧ゅh縺�€�
  5. Result(4) 縺ョ謨ー蟄ヲ蛟、縺ョ謨ー蛟、繧定ソ斐☆縲�

NOTE parseFloat 譁�ュ怜�縺ョ蜈郁。後☆繧区�蛻�□縺代r謨ー蛟、縺ィ縺励※隗」驥医@縺ヲ繧医>;

縺昴l縺ッ 10 騾イ謨ー陦ィ險倥�荳€驛ィ縺ィ縺励※隗」驥医〒縺阪↑縺�ササ諢上�譁�ュ励r辟。隕悶@縲√◎縺ョ繧医≧縺ェ譁�ュ励′辟。隕悶&繧後◆縺薙→縺ョ縺�°縺ェ繧句セエ蛟吶b荳弱∴繧峨l縺ェ縺�€�

15.1.2.4 isNaN (number)

蠑墓焚縺ォ ToNumber 繧帝←逕ィ縺励€∫オ先棡縺� NaN 縺ァ縺ゅl縺ー true, 縺昴≧縺ァ縺ェ縺代l縺ー false 繧定ソ斐☆縲�

15.1.2.5 isFinite (number)

蠑墓焚縺ォ ToNumber 繧帝←逕ィ縺励€∫オ先棡縺� NaN, +竏�, -竏� 縺ァ縺ゅl縺ー false, 縺昴≧縺ァ縺ェ縺代l縺ー true 繧定ソ斐☆縲�

15.1.3 URI 蜃ヲ逅�未謨ー縺ョ繝励Ο繝代ユ繧」 (URI Handling Function Properties)

Uniform Resource Identifiers, 縺ゅk縺�� URI 縺ッ縲√Μ繧ス繝シ繧ケ (縺、縺セ繧翫€√え繧ァ繝悶�繝シ繧ク繧�ヵ繧。繧、繝ォ)繧定ュ伜挨縺吶k譁�ュ怜�縺ァ縺ゅj縲√う繝ウ繧ソ繝シ繝阪ャ繝井ク翫〒縺昴l繧峨↓繧「繧ッ繧サ繧ケ縺吶k繝励Ο繝医さ繝ォ (縺吶↑繧上■ HTTP 繧� FTP) 繧定シク騾√☆繧九€� ECMAScript 險€隱櫁�霄ォ縺ッ縲�繧サ繧ッ繧キ繝ァ繝ウ 15.1.3.1, 15.1.3.2, 15.1.3.3, 15.1.3.4 縺ォ URI 繧堤ャヲ蜿キ蛹悶∪縺溷セゥ蜿キ蛹悶☆繧矩未謨ー繧定ソー縺ケ繧九�縺ソ縺ァ縲∽サ悶� URI 繧剃スソ逕ィ縺吶k繧オ繝昴�繝医r謠蝉セ帙@縺ェ縺�€�

NOTE ECMAScript 螳溯」��螟壹¥縺ッ縲√え繧ァ繝悶�繝シ繧ク繧呈桃菴懊☆繧玖ソス蜉�縺ョ髢「謨ー縺ィ繝。繧ス繝�ラ繧呈署萓帙☆繧�; 縺薙l繧峨�髢「謨ー縺ッ縺薙�讓呎コ悶�驕ゥ逕ィ遽�峇荳翫↓縺ゅk縲� URI 縺ッ謌仙�蛻�屬蟄舌↓繧医▲縺ヲ蛻�牡縺輔l縺滓�蛻��荳ヲ縺ウ縺ァ讒区�縺輔l繧九€ゆク€闊ャ逧�↑蠖「蠑上�:

Scheme : First / Second ; Third ? Fourth

繧、繧ソ繝ェ繝�け菴薙�蜷榊燕縺ッ謌仙�繧偵≠繧峨o縺励€� ":", "/", ";", "?" 縺ッ蛻�屬蟄舌→縺励※菴ソ逕ィ縺輔l繧倶コ育エ�枚蟄励r縺ゅi繧上☆縲� encodeURI 髢「謨ー縺ィ decodeURI 髢「謨ー縺ッ縲∝ョ檎挑縺ェ URI 縺ョ蜍穂ス懊r諢丞峙縺輔l繧�; URI 荳ュ縺ョ莉サ諢上�莠育エ�枚蟄励�縲∫音谿翫↑諢丞袖繧呈戟縺。縲∝セ薙▲縺ヲ隨ヲ蜿キ蛹悶&繧後↑縺�%縺ィ縺梧э蝗ウ縺輔l繧九→閠�∴繧九€� encodeURIComponent 髢「謨ー縺ィ decodeURIComponent 髢「謨ー縺ッ縲� URI 縺ョ蛟句挨縺ョ謌仙�縺ィ縺励※縺ョ蜍穂ス懊r諢丞峙縺輔l繧�; 莉サ諢上�莠育エ�枚蟄励�繝�く繧ケ繝医r縺ゅi繧上@縲√@縺溘′縺」縺ヲ謌仙�縺悟ョ檎挑縺ェ URI 縺ョ荳€驛ィ縺ァ縺ゅk縺ィ縺阪€∽コ育エ�枚蟄励→縺励※隗」譫舌&繧後↑縺�h縺�↓隨ヲ蜿キ蛹悶&繧後↑縺代l縺ー縺ェ繧峨↑縺�€√→閠�∴繧九€�

谺。縺ョ蟄怜唱譁�ウ輔�縲∫ャヲ蜿キ蛹悶&繧後◆ URI 縺ョ蠖「蠑上r隕丞ョ壹☆繧九€�

uri :::
uriCharactersopt
uriCharacters :::
uriCharacter uriCharactersopt
uriCharacter :::
uriReserved
uriUnescaped
uriEscaped
uriReserved ::: one of
; / ? : @ & = + $ ,
uriUnescaped :::
uriAlpha
DecimalDigit
uriMark
uriEscaped :::
% HexDigit HexDigit
uriAlpha ::: one of
a b c d e f g h i j k l m n o p q r s t u v w x y z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
uriMark ::: one of
- _ . ! ~ * ' ( )

URI 荳ュ縺ォ蜷ォ縺セ繧後k譁�ュ励′縲∽ク翫↓謖吶£繧峨l縺ヲ縺�↑縺�→縺阪€√∪縺滉コ育エ�枚蟄励↓荳弱∴繧峨l繧狗音谿翫↑諢丞袖繧呈戟縺、縺ィ諢丞峙縺輔l縺ェ縺�→縺阪€√◎縺ョ譁�ュ励�隨ヲ蜿キ蛹悶&繧後↑縺代l縺ー縺ェ繧峨↑縺�€よ枚蟄励�縺セ縺� UTF-8 螟画鋤繧堤畑縺�※繧ェ繧ッ繝�ャ繝医�繧キ繝シ繧ア繝ウ繧ケ縺ォ螟画鋤縺輔l繧九€ゅし繝ュ繧イ繝シ繝医�繧「 (surrogate pairs) 縺ッ縺セ縺� UCS-2 縺九i UCS-4 隨ヲ蜿キ蛹悶↓螟画鋤縺輔l繧九€� (遽�峇 [0, 127] 縺ョ繧ウ繝シ繝峨�繧、繝ウ繝医↓縺、縺�※縺ッ縲√%繧後�蜷後§蛟、縺ョ蜊倅ク€縺ョ繧ェ繧ッ繝�ャ繝医�邨先棡縺ァ縺ゅk縲�) 邨先棡縺ョ繧ェ繧ッ繝�ャ繝医�繧キ繝シ繧ア繝ウ繧ケ縺ッ縲� "%xx" 蠖「蠑上�繧ィ繧ケ繧ア繝シ繝励す繝シ繧ア繝ウ繧ケ縺ァ縺ゅi繧上&繧後k蜷�が繧ッ繝�ャ繝医�譁�ュ怜�縺ォ螟画鋤縺輔l繧九€�

隨ヲ蜿キ蛹悶→繧ィ繧ケ繧ア繝シ繝励�蜃ヲ逅��縲� 2 蛟九�譁�ュ怜�蠑墓焚 string 縺ィ unescapedSet 繧偵→繧矩國縺鈴未謨ー Encode 縺ォ繧医▲縺ヲ險倩ソー縺輔l繧九€ゅ%縺ョ髢「謨ー縺ッ隗」隱ャ荳翫�逶ョ逧�〒縺ョ縺ソ螳夂セゥ縺輔l繧九€�

  1. string 縺ョ譁�ュ玲焚繧堤ョ怜�縺吶k縲�
  2. R 繧堤ゥコ譁�ュ怜�縺ィ縺吶k縲�
  3. k 繧� 0 縺ィ縺吶k縲�
  4. k 縺� Result(1) 縺ィ遲峨@縺�↑繧峨�縲� R 繧定ソ斐☆縲�
  5. C 繧� string 荳ュ縺ョ菴咲スョ k 縺ョ譁�ュ励→縺吶k縲�
  6. C 縺� unescapedSet 荳ュ縺ォ縺ェ縺�↑繧峨�縲� 繧ケ繝�ャ繝� 9 縺ク縲�
  7. S 繧呈枚蟄� C 縺ョ縺ソ縺ァ讒区�縺輔l繧区枚蟄怜�縺ィ縺吶k縲�
  8. 繧ケ繝�ャ繝� 24 縺ク縲�
  9. C 縺ョ繧ウ繝シ繝峨�繧、繝ウ繝亥€、縺� 0xDC00 莉・荳� 0xDFFF 莉・荳九↑繧峨�縲∽セ句、� URIError 繧呈兜縺偵k縲�
  10. C 縺ョ繧ウ繝シ繝峨�繧、繝ウ繝亥€、縺� 0xD800 譛ェ貅€縲√∪縺溘� 0xDBFF 繧医j螟ァ縺阪>縺ェ繧峨�縲� V 繧� C 縺ョ繧ウ繝シ繝峨�繧、繝ウ繝亥€、縺ィ縺励※ 繧ケ繝�ャ繝� 16 縺ク縲�
  11. k 繧� 1 蠅怜�縺吶k縲�
  12. k 縺ィ Result(1) 縺檎ュ峨@縺�↑繧峨�縲� 萓句、� URIError 繧呈兜縺偵k縲�
  13. string 荳ュ縺ョ菴咲スョ k 縺ョ譁�ュ励�繧ウ繝シ繝峨�繧、繝ウ繝亥€、繧貞叙蠕励☆繧九€�
  14. Result(13) 縺� 0xDC00 譛ェ貅€縲√∪縺溘� 0xDFFF 繧医j螟ァ縺阪>縺ェ繧峨�縲� 萓句、� URIError 繧呈兜縺偵k縲�
  15. V 繧� (((C 縺ョ繧ウ繝シ繝峨�繧、繝ウ繝亥€、) - 0xD800) * 0x400 + (Result(13) - 0xDC00) + 0x10000) 縺ィ縺吶k縲�
  16. Octets 繧� V 縺ョ UTF-8 螟画鋤縺ョ驕ゥ逕ィ邨先棡縺ァ縺ゅk繧ェ繧ッ繝�ャ繝医�驟榊�縺ィ縺励€� L 繧帝�蛻励�繧オ繧、繧コ縺ィ縺吶k縲�
  17. j 繧� 0 縺ィ縺吶k縲�
  18. Octets 蜀��菴咲スョ j 縺ョ蛟、繧貞叙蠕励☆繧九€�
  19. XY 繧� Result(18) 縺ョ蛟、繧堤ャヲ蜿キ蛹悶☆繧� 2 蛟九�螟ァ譁�ュ励� 16 騾イ謨ー蟄励→縺励※縲� S 繧� 3 譁�ュ� "%XY" 縺ァ讒区�縺輔l繧区枚蟄怜�縺ィ縺吶k縲�
  20. R 繧偵€ヽ 縺ィ S 縺ョ蜑阪�蛟、繧帝€」邨舌@縺ヲ邂怜�縺励◆縲∵眠縺励>譁�ュ怜�縺ィ縺吶k縲�
  21. j 繧� 1 蠅怜�縺吶k縲�
  22. j 縺� L 縺ィ遲峨@縺�↑繧峨�縲� 繧ケ繝�ャ繝� 25 縺ク縲�
  23. 繧ケ繝�ャ繝� 18 縺ク縲�
  24. R 繧偵€ヽ 縺ィ S 縺ョ蜑阪�蛟、繧帝€」邨舌@縺ヲ邂怜�縺励◆縲∵眠縺励>譁�ュ怜�縺ィ縺吶k縲�
  25. k 繧� 1 蠅怜�縺吶k縲�
  26. 繧ケ繝�ャ繝� 4 縺ク縲�

繧「繝ウ繧ィ繧ケ繧ア繝シ繝励→蠕ゥ蜿キ蛹悶�蜃ヲ逅��縲� 2 蛟九�譁�ュ怜�蠑墓焚 string 縺ィ reservedSet 繧偵→繧矩國縺鈴未謨ー Decode 縺ォ繧医▲縺ヲ險倩ソー縺輔l繧九€ゅ%縺ョ髢「謨ー縺ッ隗」隱ャ荳翫�逶ョ逧�〒縺ョ縺ソ螳夂セゥ縺輔l繧九€�

  1. string 縺ョ譁�ュ玲焚繧堤ョ怜�縺吶k縲�
  2. R 繧堤ゥコ譁�ュ怜�縺ィ縺吶k縲�
  3. k 繧� 0 縺ィ縺吶k縲�
  4. k 縺� Result(1) 縺ィ遲峨@縺�↑繧峨�縲� R 繧定ソ斐☆縲�
  5. C 繧� string 荳ュ縺ョ菴咲スョ k 縺ョ譁�ュ励→縺吶k縲�
  6. C 縺� '%' 縺ァ縺ェ縺�↑繧峨�縲� 繧ケ繝�ャ繝� 40 縺ク縲�
  7. start 繧� k 縺ィ縺吶k縲�
  8. k + 2 縺� Result(1) 縺ィ遲峨@縺�∪縺溘�繧医j螟ァ縺阪>縺ェ繧峨�縲� 萓句、� URIError 繧呈兜縺偵k縲�
  9. string 荳ュ縺ョ菴咲スョ (k+1) 縺ィ 菴咲スョ(k + 2) 縺ョ譁�ュ励′ 16 騾イ謨ー蟄励r縺ゅi繧上&縺ェ縺�↑繧峨�縲∽セ句、� URIError 繧呈兜縺偵k縲�
  10. B 繧� 菴咲スョ (k+1) 縺ィ 菴咲スョ(k + 2) 縺ョ 2 蛟九� 16 騾イ謨ー蟄励〒縺ゅi繧上&繧後k 8 繝薙ャ繝亥€、縺ィ縺吶k縲�
  11. k 繧� 2 蠅怜�縺吶k縲�
  12. B 縺ョ譛€螟ァ譯√ン繝�ヨ縺� 0 縺ェ繧峨�縲� C 繧偵さ繝シ繝峨�繧、繝ウ繝亥€、 B 縺ョ譁�ュ励→縺励※縲� 繧ケ繝�ャ繝� 37 縺ク縲�
  13. n 繧偵€� (B << n) & 0x80 縺� 0 縺ィ遲峨@縺上↑繧九h縺�↑縲∵怙蟆上�雋�縺ァ縺ェ縺�€、縺ィ縺吶k縲�
  14. n 縺� 1 縺ィ遲峨@縺�€√∪縺溘� n 縺� 4 繧医j螟ァ縺阪>縺ェ繧峨�縲� 萓句、� URIError 繧呈兜縺偵k縲�
  15. Octets 繧偵€√し繧、繧コ n 縺ョ 8 繝薙ャ繝域紛謨ー縺ョ驟榊�縺ィ縺吶k縲�
  16. Octets 縺ョ菴咲スョ 0 繧偵€� B 縺ォ險ュ螳壹☆繧九€�
  17. k + (3 * (n - 1)) 縺� Result(1) 縺ィ遲峨@縺�°繧医j螟ァ縺阪>縺ェ繧峨�縲� 萓句、� URIError 繧呈兜縺偵k縲�
  18. j 繧� 1 縺ィ縺吶k縲�
  19. j 縺� n 縺ィ遲峨@縺�↑繧峨�縲� 繧ケ繝�ャ繝� 29 縺ク縲�
  20. k 繧� 1 蠅怜�縺吶k縲�
  21. 菴咲スョ k 縺ョ譁�ュ励′ '%' 縺ァ縺ェ縺�↑繧峨�縲� 萓句、� URIError 繧呈兜縺偵k縲�
  22. string 蜀��菴咲スョ (k +1) 縺ィ菴咲スョ (k + 2) 縺ョ譁�ュ励′ 16 騾イ謨ー蟄励r縺ゅi繧上&縺ェ縺�↑繧峨�縲∽セ句、� URIError 繧呈兜縺偵k縲�
  23. B 繧偵€∽ス咲スョ (k + 1) 縺ィ菴咲スョ (k + 2) 縺ョ 2 蛟九� 16 騾イ謨ー蟄励〒陦ィ縺輔l繧� 8 繝薙ャ繝亥€、縺ィ縺吶k縲�
  24. B 縺ョ譛€螟ァ譯√°繧� 2 繝薙ャ繝医′ 10 縺ァ縺ェ縺�↑繧峨�縲� 萓句、� URIError 繧呈兜縺偵k縲�
  25. k 繧� 2 蠅怜�縺吶k縲�
  26. Octets 縺ョ菴咲スョ j 繧偵€� B 縺ォ險ュ螳壹☆繧九€�
  27. j 繧� 1 蠅怜�縺吶k縲�
  28. 繧ケ繝�ャ繝� 19 縺ク縲�
  29. V 繧偵€� Octets 縺ォ UTF-8 螟画鋤繧帝←逕ィ縺怜叙蠕励@縺溷€、縺ィ縺吶k縲ゅ☆縺ェ繧上■縲√が繧ッ繝�ャ繝医�驟榊�縺九i32繝薙ャ繝亥€、縺ォ螟画鋤縺輔l繧九€�
  30. V 縺� 0x10000 繧医j蟆上&縺�↑繧峨�縲� 繧ケ繝�ャ繝� 36 縺ク縲�
  31. V 縺� 0x10FFFF 繧医j螟ァ縺阪>縺ェ繧峨�縲� 萓句、� URIError 繧呈兜縺偵k縲�
  32. L 繧� (((V - 0x10000) & 0x3FF) + 0xDC00) 縺ィ縺吶k縲�
  33. H 繧� ((((V - 0x10000) >> 10) & 0x3FF) + 0xD800) 縺ィ縺吶k縲�
  34. S 繧偵€√さ繝シ繝峨�繧、繝ウ繝亥€、 H 縺ィ L 縺ョ 2 蛟九�譁�ュ励〒讒区�縺輔l繧区枚蟄怜�縺ィ縺吶k縲�
  35. 繧ケ繝�ャ繝� 41 縺ク縲�
  36. C 繧偵さ繝シ繝峨�繧、繝ウ繝亥€、 V 縺ョ譁�ュ励→縺吶k縲�
  37. C 縺� reservedSet 蜀�↓縺ェ縺�↑繧峨�縲� 繧ケ繝�ャ繝� 40 縺ク縲�
  38. S 繧偵€� string 縺ョ菴咲スョ start 縺九i菴咲スョ k 縺セ縺ァ繧貞性繧€驛ィ蛻�枚蟄怜�縺ィ縺吶k縲�
  39. 繧ケ繝�ャ繝� 41 縺ク縲�
  40. S 繧呈枚蟄� C 縺ョ縺ソ縺ァ讒区�縺輔l繧区枚蟄怜�縺ィ縺吶k縲�
  41. R 繧偵€ヽ 縺ィ S 縺ョ蜑阪�蛟、繧帝€」邨舌@縺ヲ邂怜�縺励◆縲∵眠縺励>譁�ュ怜�縺ィ縺吶k縲�
  42. k 繧� 1 蠅怜�縺吶k縲�
  43. 繧ケ繝�ャ繝� 4 縺ク縲�

NOTE Uniform Resource Identifiers 縺ョ讒区枚縺ッ縲� RFC2396 縺ァ荳弱∴繧峨l繧九€�

NOTE UTF-8 縺ョ蜈ャ蠑上↑隱ャ譏弱→螳溯」��縲� Unicode Standard, Version 2.0, Appendix A 縺ァ荳弱∴繧峨l繧九€�

UTF-8 縺ァ縺ッ縲� 1 蛟九°繧� 6 蛟九�繧ェ繧ッ繝�ャ繝医�繧キ繝シ繧ア繝ウ繧ケ縺ァ隨ヲ蜿キ蛹悶&繧後k縲ゅ≠繧倶ク€縺、縺ョ "繧キ繝シ繧ア繝ウ繧ケ" 縺ョ繧ェ繧ッ繝�ャ繝医□縺代′荳贋ス阪ン繝�ヨ繧� 0 縺ォ險ュ螳壹@縲∵ョ九j 7 繝薙ャ繝医�譁�ュ怜€、縺ョ隨ヲ蜿キ蛹悶↓菴ソ逕ィ縺輔l縺ヲ縺�k縲� n 蛟九�繧ェ繧ッ繝�ャ繝医�繧キ繝シ繧ア繝ウ繧ケ縺ォ縺翫>縺ヲ縲� n>1 縺ィ縺励※縲∵怙蛻昴�繧ェ繧ッ繝�ャ繝医� n 蛟九�荳贋ス阪ン繝�ヨ繧� 1 縺ォ險ュ螳�, 邯壹¥繝薙ャ繝医r 0 縺ォ險ュ螳壹☆繧九€ゅが繧ッ繝�ャ繝医�谿九j縺ョ繝薙ャ繝医�縲∫ャヲ蜿キ蛹悶&繧後k譁�ュ励�蛟、縺九i縺ョ繝薙ャ繝医〒讒区�縺輔l繧九€らカ壹¥繧ェ繧ッ繝�ャ繝医�蜈ィ縺ヲ縺ッ荳贋ス阪ン繝�ヨ繧� 1 縺ォ險ュ螳壹@縲∫カ壹¥繝薙ャ繝医r 0 縺ォ險ュ螳壹€√◎繧後◇繧梧ョ九j 6 繝薙ャ繝� 隨ヲ蜿キ蛹悶&繧後◆譁�ュ励°繧峨�繝薙ャ繝医〒讒区�縺輔l繧九€� ECMAScript 譁�ュ励�蜿ッ閭ス縺ェ UTF-8 隨ヲ蜿キ縺ッ:

繧ウ繝シ繝峨�繧、繝ウ繝亥€、 陦ィ迴セ 1st Octet 2nd Octet 3rd Octet 4th Octet
0x0000 - 0x007F 00000000 0zzzzzzz 0zzzzzzz 縲€
0x0080 - 0x07FF 00000yyy yyzzzzzz 110yyyyy 10zzzzzz 縲€
0x0800 - 0xD7FF xxxxyyyy yyzzzzzz 1110xxxx 10yyyyyy 10zzzzzz 縲€
0xD800 - 0xDBFF
(0xDC00 - 0xDFFF
縺悟セ後↓邯壹¥)
110110vv vvwwwwxx
(110111yy yyzzzzzz
縺悟セ後↓邯壹¥)
11110uuu 10uuwwww 10xxyyyy 10zzzzzz
0xD800 - 0xDBFF
(0xDC00 - 0xDFFF
縺悟セ後↓邯壹°縺ェ縺�)
萓句、� URIError 縺檎匱逕� 縲€
0xDC00 - 0xDFFF 萓句、� URIError 逋コ逕� 縲€
0xE000 - 0xFFFF xxxxyyyy yyzzzzzz 1110xxxx 10yyyyyy 10zzzzzz 縲€

Where

uuuuu = vvvv + 1

to account for the addition of 0x10000 as in 3.7, Surrogates Unicode Standard version 2.0.

繧ウ繝シ繝峨�繧、繝ウ繝亥€、 0xD800-0xDFFF 縺ョ遽�峇縺後し繝ュ繧イ繝シ繝医�繧「縺ョ隨ヲ蜿キ蛹悶↓菴ソ逕ィ縺輔l繧�; 荳願ィ倥�螟画鋤縺ッ UCS-2 縺ョ繧オ繝ュ繧イ繝シ繝医�繧「繧� UCS-4 陦ィ迴セ縺ォ邨仙粋縺励€∫オ先棡縺ョ 21 繝薙ャ繝亥€、繧� UTF-8 縺ォ隨ヲ蜿キ蛹悶☆繧九€ょセゥ蜿キ蛹悶�縲√し繝ュ繧イ繝シ繝医�繧「繧貞�讒狗ッ峨☆繧九€�

15.1.3.1 decodeURI (encodedURI)

decodeURI 髢「謨ー縺ッ譁ー縺励>繝舌�繧ク繝ァ繝ウ縺ョ URI 繧堤ョ怜�縺吶k縲ゅ◎縺ョ荳ュ縺ァ縲∝推繧ィ繧ケ繧ア繝シ繝励す繝シ繧ア繝ウ繧ケ縺ィ encodeURI 髢「謨ー縺ォ繧医j蜿悶j蜈・繧後i繧後k遞ョ鬘槭� UTF-8 隨ヲ蜿キ縺ッ縲√◎縺ョ縺ゅi繧上☆譁�ュ励↓鄂ョ謠帙&繧後k縲� encodeURI 縺ォ繧医j蜿悶j蜈・繧後i繧後k縺薙→縺ョ縺ェ縺�お繧ケ繧ア繝シ繝励す繝シ繧ア繝ウ繧ケ縺ッ鄂ョ謠帙&繧後↑縺�€�

decodeURI 髢「謨ー縺� 1 蛟九�蠑墓焚 encodedURI 縺ァ蜻シ蜃コ縺輔l繧九→縺阪€∵ャ。縺ョ繧ケ繝�ャ繝励′蜿悶i繧後k:

  1. ToString(encodedURI) 繧貞他蜃コ縺吶€�
  2. reservedURISet 繧偵€� uriReserved 縺ィ "#" 縺ョ蜀�〒譛牙柑縺ェ蜷�枚蟄励�荳€萓九r讒区�縺吶k譁�ュ怜�縺ィ縺吶k縲�
  3. Decode(Result(1), reservedURISet) 繧貞他蜃コ縺吶€�
  4. Result(3) 繧定ソ斐☆縲�

NOTE 譁�ュ� "#" 縺ッ縲� URI 莠育エ�枚蟄励〒縺ェ縺上※繧ゅお繧ケ繧ア繝シ繝励す繝シ繧ア繝ウ繧ケ縺九i蠕ゥ蜿キ縺輔l縺ェ縺�€�

15.1.3.2 decodeURIComponent (encodedURIComponent)

decodeURIComponent 髢「謨ー縺ッ譁ー縺励>繝舌�繧ク繝ァ繝ウ縺ョ URI 繧堤ョ怜�縺吶k縲ゅ◎縺ョ荳ュ縺ァ縲∝推繧ィ繧ケ繧ア繝シ繝励す繝シ繧ア繝ウ繧ケ縺ィ encodeURIComponent 髢「謨ー縺ォ繧医j蜿悶j蜈・繧後i繧後k遞ョ鬘槭� UTF-8 隨ヲ蜿キ縺ッ縲√◎縺ョ縺ゅi繧上☆譁�ュ励↓鄂ョ謠帙&繧後k縲�

decodeURIComponent 髢「謨ー縺� 1 蛟九�蠑墓焚 encodedURIComponent 縺ァ蜻シ蜃コ縺輔l繧九→縺阪€∵ャ。縺ョ繧ケ繝�ャ繝励′蜿悶i繧後k:

  1. ToString(encodedURIComponent) 繧貞他蜃コ縺吶€�
  2. reservedURIComponentSet 繧堤ゥコ譁�ュ怜�縺ィ縺吶k縲�
  3. Decode(Result(1), reservedURIComponentSet) 繧貞他蜃コ縺吶€�
  4. Result(3) 繧定ソ斐☆縲�

15.1.3.3 encodeURI (uri)

encodeURI 髢「謨ー縺ッ縲∵眠縺励>繝舌�繧ク繝ァ繝ウ縺ョ URI 繧堤ョ怜�縺吶k縲ゅ◎縺ョ荳ュ縺ァ荳€螳壹�譁�ュ励�蜷�う繝ウ繧ケ繧ソ繝ウ繧ケ縺ッ縲∵枚蟄励� UTF-8 隨ヲ蜿キ繧偵≠繧峨o縺� 1,2,3 蛟九�繧ィ繧ケ繧ア繝シ繝励す繝シ繧ア繝ウ繧ケ縺ォ繧医▲縺ヲ鄂ョ謠帙&繧後k縲�

encodeURI 髢「謨ー縺� 1 蛟九�蠑墓焚 uri 縺ァ蜻シ蜃コ縺輔l繧九→縺阪€∵ャ。縺ョ繧ケ繝�ャ繝励′蜿悶i繧後k:

  1. ToString(uri) 繧貞他蜃コ縺吶€�
  2. unescapedURISet 繧偵€� uriReserved 縺ィ uriUnescaped 縺ィ "#" 縺ョ荳ュ縺ァ譛牙柑縺ェ蜷�枚蟄励�荳€萓九〒讒区�縺輔l繧区枚蟄怜�縺ィ縺吶k縲�
  3. Encode(Result(1), unescapedURISet) 繧貞他蜃コ縺吶€�
  4. Result(3) 繧定ソ斐☆縲�

NOTE 譁�ュ� "#" 縺ッ縲∽コ育エ�枚蟄励〒繧る撼繧ィ繧ケ繧ア繝シ繝玲枚蟄励〒繧ゅ↑縺�′縲√お繧ケ繧ア繝シ繝励す繝シ繧ア繝ウ繧ケ縺ォ隨ヲ蜿キ蛹悶&繧後↑縺�€�

15.1.3.4 encodeURIComponent (uriComponent)

encodeURIComponent 髢「謨ー縺ッ縲� URI 縺ョ譁ー縺励>繝舌�繧ク繝ァ繝ウ繧堤ョ怜�縺吶k縲ゅ◎縺ョ荳ュ縺ァ縲∽ク€螳壹�譁�ュ励�繧、繝ウ繧ケ繧ソ繝ウ繧ケ縺ッ縲∵枚蟄励� UTF-8 隨ヲ蜿キ蛹悶r縺ゅi繧上☆ 1,2,3 蛟九�繧ィ繧ケ繧ア繝シ繝励す繝シ繧ア繝ウ繧ケ縺ォ鄂ョ謠帙&繧後k縲�

encodeURIComponent 縺� 1 蛟九�蠑墓焚 uriComponent 縺ァ蜻シ蜃コ縺輔l繧九→縺阪€∵ャ。縺ョ繧ケ繝�ャ繝励′蜿悶i繧後k:

  1. ToString(uriComponent) 繧貞他蜃コ縺吶€�
  2. unescapedURIComponentSet 繧偵€� uriUnescaped 蜀�〒譛牙柑縺ェ縺ョ蜷�枚蟄励�荳€萓九r讒区�縺吶k譁�ュ怜�縺ィ縺吶k縲�
  3. Encode(Result(1), unescapedURIComponentSet) 繧貞他蜃コ縺吶€�
  4. Result(3) 繧定ソ斐☆縲�

15.1.4 Global 繧ェ繝悶ず繧ァ繧ッ繝医�繧ウ繝ウ繧ケ繝医Λ繧ッ繧ソ繝励Ο繝代ユ繧」 (Constructor Properties of the Global Object)

15.1.4.1 Object ( . . . )

繧サ繧ッ繧キ繝ァ繝ウ 15.2.1 蜿翫� 15.2.2 蜿ら�縲�

15.1.4.2 Function ( . . . )

繧サ繧ッ繧キ繝ァ繝ウ 15.3.1 蜿翫� 15.3.2 蜿ら�縲�

15.1.4.3 Array ( . . . )

繧サ繧ッ繧キ繝ァ繝ウ 15.4.1 蜿翫� 15.4.2 蜿ら�縲�

15.1.4.4 String ( . . . )

繧サ繧ッ繧キ繝ァ繝ウ 15.5.1 蜿翫� 15.5.2 蜿ら�縲�

15.1.4.5 Boolean ( . . . )

繧サ繧ッ繧キ繝ァ繝ウ 15.6.1 蜿翫� 15.6.2 蜿ら�縲�

15.1.4.6 Number ( . . . )

繧サ繧ッ繧キ繝ァ繝ウ 15.7.1 蜿翫� 15.7.2 蜿ら�縲�

15.1.4.7 Date ( . . . )

15.1.4.8 RegExp ( . . . )

繧サ繧ッ繧キ繝ァ繝ウ 15.10.3 蜿翫� 15.10.4 蜿ら�縲�

15.1.4.9 Error ( . . . )

繧サ繧ッ繧キ繝ァ繝ウ 15.11.1 蜿翫� 15.11.2 蜿ら�縲�

15.1.4.10 EvalError ( . . . )

15.1.4.11 RangeError ( . . . )

15.1.4.12 ReferenceError ( . . . )

15.1.4.13 SyntaxError ( . . . )

15.1.4.14 TypeError ( . . . )

15.1.4.15 URIError ( . . . )

15.1.5 Global 繧ェ繝悶ず繧ァ繧ッ繝医�縺昴�莉悶�繝励Ο繝代ユ繧」 (Other Properties of the Global Object)

15.1.5.1 Math

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Issued: / Revised: / All rights reserved. © 2002-2016 TAKI