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[cssom-view-1] Per flackr feedback, not worth making quirks mode care about single-axis. w3c/csswg-drafts@169b434 
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‎cssom-view-ja.html‎

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@@ -570,8 +570,9 @@
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●●options
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spec_title:CSSOM View Module Level 1
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spec_date:2026-04-17
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trans_update:2026-05-05
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spec_date:2026-03-20
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real_date:2026-04-30
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trans_update:2026-07-05
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source_checked:250903
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page_state_key:CSS
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original_url:https://drafts.csswg.org/cssom-view-1/
@@ -856,7 +857,6 @@
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~scrollされる区画:#scrolling-area
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~scroll可能になり得る:#potentially-scrollable
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~scroll可能になり得ない:#potentially-scrollable
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doc.処理待ち~scroll~event群:#document-pending-scroll-events
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要素を~scrollする:#scroll-an-element
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瞬時に~scrollする:#concept-instant-scroll
@@ -933,6 +933,7 @@
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古典~scrollbar:~CSSOVERFLOW3#classic-scrollbars
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上層~scrollbar:~CSSOVERFLOW3#overlay-scrollbars
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~scroll可能な値:~CSSOVERFLOW3#scrollable-overflow-value
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平坦~tree:~CSSSHADOW#flat-tree
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@@ -1403,8 +1404,6 @@
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Tab Atkins Jr.; Florian Rivoal; Vladimir Levin. ＜CSS Containment Module Level 2＞. URL: https://drafts.csswg.org/css-contain-2/
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[CSS-DEVICE-ADAPT]
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Florian Rivoal; Emilio Cobos Álvarez. ＜CSS Viewport Module Level 1＞. URL: https://drafts.csswg.org/css-viewport/
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[CSS-DISPLAY-3]
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Elika Etemad; Tab Atkins Jr.. ＜CSS Display Module Level 3＞. URL: https://drafts.csswg.org/css-display/
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[CSS-DISPLAY-4]
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Elika Etemad; Tab Atkins Jr.. ＜CSS Display Module Level 4＞. URL: https://drafts.csswg.org/css-display-4/
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[CSS-OVERFLOW-3]
@@ -1435,6 +1434,8 @@
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Daniel Glazman; Emilio Cobos Álvarez. ＜CSS Object Model (CSSOM)＞. URL: https://drafts.csswg.org/cssom/
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[DOM]
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Anne van Kesteren. ＜DOM Standard＞. Living Standard. URL: https://dom.spec.whatwg.org/
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[ECMASCRIPT]
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＜ECMAScript Language Specification＞. URL: https://tc39.es/ecma262/multipage/
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[GEOMETRY-1]
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Sebastian Zartner; Yehonatan Daniv. ＜Geometry Interfaces Module Level 1＞. URL: https://drafts.csswg.org/geometry/
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[HTML]
@@ -1885,16 +1886,19 @@ <h2 title="Terminology">2. 各種用語</h2>
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</p>
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<p>
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所与の（ある`文書$の）`~body要素$ %~body は、
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~AND↓ を満たすとき，
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所与の
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( ある`文書$の`~body要素$ %~body, 軸 %軸 )
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に対し，
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%~body は %軸 において
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`~scroll可能になり得る@
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とされる。
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とは、
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~AND↓ が満たされることをいう。
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◎
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An element body (which will be the body element) is potentially scrollable if all of the following conditions are true:
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An element body (which will be the body element) is potentially scrollable in an axis if all of the following conditions are true:
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</p>
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<ul>
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<li>
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%~body は`~box$を有する。
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%~body は`~box$を有する
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◎
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body has an associated box.
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</li>
@@ -1903,22 +1907,16 @@ <h2 title="Terminology">2. 各種用語</h2>
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%~body, %~body の`親~要素$は、
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どちらも次を満たす
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⇒
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［
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その［
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`overflow-x$p,
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`overflow-y$p
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］~propのどちらかは次を満たす
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⇒
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算出d値 ~NIN { `visible$v, `clip$v }
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］~propのうち %軸 に対応する方の算出d値 ~NIN { `visible$v, `clip$v }
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【算出d値は`~scroll可能な値$である】
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</p>
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<p class="trans-note">【
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実際には、
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片方の~propがこれを満たすならば，両方とも満たすことになる。
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】</p>
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◎
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body’s parent element’s computed value of the overflow-x or overflow-y properties is neither visible nor clip.
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◎
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body’s computed value of the overflow-x or overflow-y properties is neither visible nor clip.
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body’s computed value of the overflow-x or overflow-y properties (whichever is in the given axis) is neither visible nor clip.
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</li>
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</ul>
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@@ -1967,7 +1965,7 @@ <h2 title="Terminology">2. 各種用語</h2>
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記号
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%D1 は［
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上方, 下方, 左方, 右方
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］いずれかの方向を表し，
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］いずれかの方向を,
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%D2 は その反対~方向を表すとする。
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`~overflow方向$に %D1 が含まれている（したがって %D2 は含まれていない）ならば、
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~boxの［
@@ -1983,42 +1981,41 @@ <h2 title="Terminology">2. 各種用語</h2>
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<tr><th>%D1 側の辺
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<td>
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［
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`初期~包含塊$の %D1 側の辺, および
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`表示域$のすべての子孫~box~FN1 の %D1 側の`~margin辺$
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］のうち，最も %D1 側の辺。
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`初期~包含塊$の %D1 側にある辺, および
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`表示域$のすべての子孫~box~FN の %D1 側にある`~margin辺$
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］のうち，最も %D1 側にある辺。
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◎
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The D1-most edge of the D1 edge of the initial containing block and the D1 margin edge of all of the viewport’s descendants' boxes.
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<td>
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［
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要素の %D1 側の`~padding辺$, および
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要素のすべての子孫~box~FN1 の %D1 側の`~margin辺$
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］のうち，最も %D1 側の辺
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— ただし，要素の先祖を`包含塊$とするような~boxは除外する~FN2。
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要素の %D1 側にある`~padding辺$, および
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要素のすべての子孫~box~FN の %D1 側にある`~margin辺$
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］のうち，最も %D1 側にある辺
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— ただし、
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要素の先祖を`包含塊$とするような~box【例：`~flow外$にあるもの】は除外する。
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◎
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The D1-most edge of the element’s D1 padding edge and the D1 margin edge of all of the element’s descendants' boxes, excluding boxes that have an ancestor of the element as their containing block.
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<tr><th style="white-space:nowrap;">%D2 側の辺
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<tr><th style="white-space:nowrap;">%D2 側にある辺
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<td>
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`初期~包含塊$の %D2 側の辺。
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`初期~包含塊$の %D2 側にある辺。
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◎
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The D2 edge of the initial containing block.
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<td>
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要素の %D2 側の`~padding辺$。
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要素の %D2 側にある`~padding辺$。
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◎
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The element’s D2 padding edge.
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</table>
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<p class="trans-note">【~FN1
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<p class="trans-note">【~FN
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この子孫は、
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`~box~tree$における子孫を意味する。
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“表示域の子孫~box” が何を意味するのか不明だが、
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当の文書の~box~treeを成す~boxすべてが該当すると見受けられる。
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】【~FN2
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例えば，`~flow外$にある~boxなど。
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】【
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この箇所は、
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原文の内容と等価になるよう，~parameter化により大幅に圧縮して記述している。
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この箇所の和訳は、
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原文の内容と等価になるよう，~parameter化により大幅に圧縮している。
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】</p>
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<div lang="en" class="_en">
@@ -5104,18 +5101,22 @@ <h2 title="Extensions to the Document Interface">5. `Document^I ~interfaceに対
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~IF［
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%~body ~NEQ ~NULL
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］~AND［
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%~body は`~scroll可能になり得ない$~FN
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~NOT %~body はどちらかの軸において`~scroll可能になり得る$~FN
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］
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⇒
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~RET %~body
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◎
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If the body element exists, and it is not potentially scrollable, return the body element and abort these steps.
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If the body element exists, and it is not potentially scrollable in either axis, return the body element and abort these steps.
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</p>
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<p>~FN
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この目的においては、
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%~body の `overflow$p 値が `clip^v の場合には，
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%~body の親~要素の `overflow$p は `hidden^v として扱うモノトスル。
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%~body の［
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`overflow-x$p ／ `overflow-y$p
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］が `clip^v をとる場合には，
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%~body の親~要素の［
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`overflow-x$p ／ `overflow-y$p
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］は `hidden^v をとるものとして扱うモノトスル。
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◎
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For this purpose, a value of overflow:clip on the body element’s parent element must be treated as overflow:hidden.
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</p>
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］~AND［
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%文書 は`過去互換~mode$下にある
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］~AND［
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%要素 は`~scroll可能になり得ない$
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~NOT %要素 は どちらかの軸において`~scroll可能になり得る$
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］
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⇒
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~RET `~window用の~scroll手続き$( %window, %x, %y, %挙動 )
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◎
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If the element is the body element, document is in quirks mode, and the element is not potentially scrollable, return the Promise returned by scroll() on window after the method is invoked with options as the only argument, and abort the remaining steps.
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If the element is the body element, document is in quirks mode, and the element is not potentially scrollable in either axis, return the Promise returned by scroll() on window after the method is invoked with options as the only argument, and abort the remaining steps.
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</li>
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<li>
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~IF［
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］~AND［
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%文書 は`過去互換~mode$下にある
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］~AND［
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コレは`~scroll可能になり得ない$
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~NOT コレは どちらの軸においても`~scroll可能になり得る$
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］
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</li>
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</ul>
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◎
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If the element is the root element return the value of scrollY on window.
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◎
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If the element is the body element, document is in quirks mode, and the element is not potentially scrollable, return the value of scrollY on window.
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If the element is the body element, document is in quirks mode, and the element is not potentially scrollable in at least one axis, return the value of scrollY on window.
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</li>
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<li>
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~IF［
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］~AND［
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%文書 は`過去互換~mode$下にある
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］~AND［
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コレは`~scroll可能になり得ない$
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~NOT コレは どちらの軸においても`~scroll可能になり得る$
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］
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</li>
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</ul>
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◎
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If the element is the root element invoke scroll() on window with scrollX on window as first argument and y as second argument, and terminate these steps.
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◎
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If the element is the body element, document is in quirks mode, and the element is not potentially scrollable, invoke scroll() on window with scrollX as first argument and y as second argument, and terminate these steps.
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If the element is the body element, document is in quirks mode, and the element is not potentially scrollable in at least one axis, invoke scroll() on window with scrollX as first argument and y as second argument, and terminate these steps.
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</li>
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<li>
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<p>
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• If window is null, return zero and terminate these steps.
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• If the element is the root element and document is in quirks mode, return zero and terminate these steps.
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• If the element is the root element return the value of scrollX on window.
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• If the element is the body element, document is in quirks mode, and the element is not potentially scrollable, return the value of scrollX on window.
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• If the element is the body element, document is in quirks mode, and the element is not potentially scrollable in at least one axis, return the value of scrollX on window.
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• If the element does not have any associated box, return zero and terminate these steps.
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• Return the x-coordinate of the scrolling area at the alignment point with the left of the padding edge of the element.
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◎
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• If window is null, terminate these steps.
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• If the element is the root element and document is in quirks mode, terminate these steps.
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• If the element is the root element invoke scroll() on window with x as first argument and scrollY on window as second argument, and terminate these steps.
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• If the element is the body element, document is in quirks mode, and the element is not potentially scrollable, invoke scroll() on window with x as first argument and scrollY on window as second argument, and terminate these steps.
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• If the element is the body element, document is in quirks mode, and the element is not potentially scrollable in at least one axis, invoke scroll() on window with x as first argument and scrollY on window as second argument, and terminate these steps.
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• If the element does not have any associated box, the element has no associated scrolling box, or the element has no overflow, terminate these steps.
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• Scroll the element to x,scrollTop, with the scroll behavior being "auto".
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</p>
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］~AND［
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コレ ~EQ %文書 の`~body要素$
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］~AND［
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コレは
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`~scroll可能になり得ない$
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~NOT コレは［
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~x軸｜~y軸
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］において`~scroll可能になり得る$
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］
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</li>
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</ul>
@@ -6460,7 +6462,7 @@ <h2 title="Extensions to the Element Interface">6. `Element^I ~interfaceに対
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◎
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If the element is the root element and document is not in quirks mode return max(viewport scrolling area width, viewport width).
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◎
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If the element is the body element, document is in quirks mode and the element is not potentially scrollable, return max(viewport scrolling area width, viewport width).
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If the element is the body element, document is in quirks mode and the element is not potentially scrollable in the x axis, return max(viewport scrolling area width, viewport width).
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</li>
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<li>
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~IF［
@@ -6489,7 +6491,7 @@ <h2 title="Extensions to the Element Interface">6. `Element^I ~interfaceに対
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• If document is not the active document, return zero and terminate these steps.
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• Let viewport height be the height of the viewport excluding the height of the scroll bar, if any, or zero if there is no viewport.
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• If the element is the root element and document is not in quirks mode return max(viewport scrolling area height, viewport height).
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• If the element is the body element, document is in quirks mode and the element is not potentially scrollable, return max(viewport scrolling area height, viewport height).
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• If the element is the body element, document is in quirks mode and the element is not potentially scrollable in the y axis, return max(viewport scrolling area height, viewport height).
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• If the element does not have any associated box return zero and terminate these steps.
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• Return the height of the element’s scrolling area.
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</p>

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