譛ャ鬆√�逶ョ谺。 逶ョ谺。

15.6 Boolean 繧ェ繝悶ず繧ァ繧ッ繝� (Boolean Objects)

15.6.1 髢「謨ー縺ィ縺励※蜻シ蜃コ縺輔l繧� Boolean 繧ウ繝ウ繧ケ繝医Λ繧ッ繧ソ (The Boolean Constructor Called as a Function)

Boolean 縺後さ繝ウ繧ケ繝医Λ繧ッ繧ソ縺ィ縺励※縺ァ縺ッ縺ェ縺城未謨ー縺ィ縺励※蜻シ蜃コ縺輔l繧九→縺阪€∝梛螟画鋤繧定。後≧縲�

15.6.1.1 Boolean (value)

ToBoolean(value) 縺ォ繧医j邂怜�縺輔l繧� (Boolean 繧ェ繝悶ず繧ァ繧ッ繝医〒縺ッ縺ェ縺�) 繝悶�繝ェ繧「繝ウ蛟、繧定ソ斐☆縲�

15.6.2 Boolean 繧ウ繝ウ繧ケ繝医Λ繧ッ繧ソ (The Boolean Constructor)

Boolean 縺� new 蠑上�荳€驛ィ縺ィ縺励※蜻シ蜃コ縺輔l繧九→縺阪€√◎繧後�繧ウ繝ウ繧ケ繝医Λ繧ッ繧ソ縺ァ縺ゅk: 縺昴l縺ッ譁ー隕上↓逕滓�縺輔l繧九が繝悶ず繧ァ繧ッ繝医r蛻晄悄蛹悶☆繧九€�

15.6.2.1 new Boolean (value)

譁ー隕上↓逕滓�縺輔l繧九が繝悶ず繧ァ繧ッ繝医� [[Prototype]] 繝励Ο繝代ユ繧」縺ッ繧ェ繝ェ繧ク繝翫Ν縺ョ Boolean 繝励Ο繝医ち繧、繝励が繝悶ず繧ァ繧ッ繝医〒縲� Boolean.prototype (繧サ繧ッ繧キ繝ァ繝ウ 15.6.3.1) 縺ョ蛻晄悄蛟、縺ァ縺ゅk縲�

譁ー隕上↓讒狗ッ峨&繧後k Boolean 繧ェ繝悶ず繧ァ繧ッ繝医� [[Class]] 繝励Ο繝代ユ繧」縺ッ縲� "Boolean" 縺ォ險ュ螳壹&繧後k縲�

譁ー隕上↓讒狗ッ峨&繧後k Boolean 繧ェ繝悶ず繧ァ繧ッ繝医� [[Value]] 繝励Ο繝代ユ繧」縺ッ縲� ToBoolean(value) 縺ォ險ュ螳壹&繧後k縲�

15.6.3 Boolean 繧ウ繝ウ繧ケ繝医Λ繧ッ繧ソ縺ョ繝励Ο繝代ユ繧」 (Properties of the Boolean Constructor)

Boolean 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」縺ョ蛻晄悄蛟、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 1) 縺ョ莉悶↓縲� Boolean 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、:

15.6.3.1 Boolean.prototype

Boolean.prototype 縺ョ蛻晄悄蛟、縺ッ縲� Boolean 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 15.6.4) 縺ァ縺ゅk縲�

縺薙�繝励Ο繝代ユ繧」縺ッ縲∝ア樊€ァ { DontEnum, DontDelete, ReadOnly } 縺ァ縺ゅk縲�

15.6.4 Boolean 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」 (Properties of the Boolean Prototype Object)

Boolean 繝励Ο繝医ち繧、繝励が繝悶ず繧ァ繧ッ繝医�縺昴l閾ェ霄ォ縺� Boolean 繧ェ繝悶ず繧ァ繧ッ繝� ([[Class]] 縺ッ "Boolean") 縺ァ縲∝€、縺� false 縺ァ縺ゅk縲�

Boolean 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 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�

Boolean 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「謨ー縺ョ莉・髯阪�隱ャ譏弱↓縺翫>縺ヲ縲√ヵ繝ャ繝シ繧コ "縺薙� Boolean 繧ェ繝悶ず繧ァ繧ッ繝�" 縺ッ縲�未謨ー蜻シ縺ウ蜃コ縺励� this 蛟、縺ァ縺ゅk繧ェ繝悶ず繧ァ繧ッ繝医r蜿ら�縺吶k; this 蛟、縺悟�驛ィ [[Class]] 繝励Ο繝代ユ繧」縺ョ蛟、縺� "Boolean" 縺ァ縺ゅk繧ェ繝悶ず繧ァ繧ッ繝医〒縺ェ縺代l縺ー縲∽セ句、� TypeError 縺梧兜縺偵i繧後k縲� Also, 繝輔Ξ繝シ繧コ "縺薙�繝悶�繝ェ繧「繝ウ蛟、" 縺ッ縲√%縺ョ Boolean 繧ェ繝悶ず繧ァ繧ッ繝医↓陦ィ迴セ縺輔l繧九ヶ繝シ繝ェ繧「繝ウ蛟、縲√☆縺ェ繧上■縲√%縺ョ Boolean 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�

15.6.4.1 Boolean.prototype.constructor

Boolean.prototype.constructor 縺ョ蛻晄悄蛟、縺ッ縲∫オ�セシ縺ソ Boolean 繧ウ繝ウ繧ケ繝医Λ繧ッ繧ソ縺ァ縺ゅk縲�

15.6.4.2 Boolean.prototype.toString ( )

縺薙�繝悶�繝ェ繧「繝ウ蛟、縺� true 縺ェ繧峨�縲∵枚蟄怜� "true" 縺瑚ソ斐&繧後k縲ゅ◎縺�〒縺ェ縺代l縺ー縲√%縺ョ繝悶�繝ェ繧「繝ウ蛟、縺ッ false 縺ァ縺ェ縺代l縺ー縺ェ繧峨★縲∵枚蟄怜� "false" 縺瑚ソ斐&繧後k縲�

toString 髢「謨ー縺ッ豎守畑逧�〒縺ッ縺ェ縺�; this 蛟、縺� Boolean 繧ェ繝悶ず繧ァ繧ッ繝医〒縺ェ縺代l縺ー縲∽セ句、� TypeError 繧呈兜縺偵k縲ゅ◎繧後f縺医€∽サ悶�遞ョ鬘槭�繧ェ繝悶ず繧ァ繧ッ繝医↓繝。繧ス繝�ラ縺ィ縺励※霆「逕ィ縺ァ縺阪↑縺�€�

15.6.4.3 Boolean.prototype.valueOf ( )

縺薙�繝悶�繝ェ繧「繝ウ蛟、繧定ソ斐☆縲�

valueOf 髢「謨ー縺ッ豎守畑逧�〒縺ッ縺ェ縺�; this 蛟、縺� Boolean 繧ェ繝悶ず繧ァ繧ッ繝医〒縺ェ縺代l縺ー縲∽セ句、� TypeError 繧呈兜縺偵k縲ゅ◎繧後f縺医€∽サ悶�遞ョ鬘槭�繧ェ繝悶ず繧ァ繧ッ繝医↓繝。繧ス繝�ラ縺ィ縺励※霆「逕ィ縺ァ縺阪↑縺�€�

15.6.5 Boolean 繧、繝ウ繧ケ繧ソ繝ウ繧ケ縺ョ繝励Ο繝代ユ繧」 (Properties of Boolean Instances)

Boolean 繧、繝ウ繧ケ繧ソ繝ウ繧ケ縺ッ縲� Boolean 繝励Ο繝医ち繧、繝励が繝悶ず繧ァ繧ッ繝医°繧臥カ呎価縺吶k繝励Ο繝代ユ繧」縺ョ荳翫↓迚ケ蛻・縺ェ繝励Ο繝代ユ繧」繧呈戟縺溘↑縺�€�

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