[pointerevents] Add mementum field in WheelEventInit w3c/pointerevents@6ce56b3

Author: triple-underscore

pointerevents-ja.html

@@ -144,8 +144,8 @@
 
 ●●options
 spec_title:Pointer Events Level 4
-spec_date:2026-05-22
-trans_update:2026-05-26
+spec_date:2026-06-16
+trans_update:2026-06-25
 source_checked:260211
 page_state_key:UIEVENTS
 original_url:https://w3c.github.io/pointerevents/
@@ -425,6 +425,7 @@
 mb.deltaY:#dom-wheeleventinit-deltay
 mb.deltaZ:#dom-wheeleventinit-deltaz
 mb.deltaMode:#dom-wheeleventinit-deltamode
+mb.momentum:#dom-wheeleventinit-momentum
 
 m.initMouseEvent:#dom-mouseevent-initmouseevent
 
@@ -9390,6 +9391,7 @@ <h4 title="WheelEventInit">6.1.2. `WheelEventInit^I</h4>
     `double$ `deltaY@mb = 0.0;
     `double$ `deltaZ@mb = 0.0;
     `unsigned long$ `deltaMode@mb = 0;
+    `boolean$ `momentum@mb = false;
 };
 </pre>
 
@@ -9399,6 +9401,8 @@ <h4 title="WheelEventInit">6.1.2. `WheelEventInit^I</h4>
 各自がとり得る値とその意味については、
 その~interface定義の記述を見よ。
 ◎
+The definitions below seem redundant when we already have the corresponding attributes defined above. See pointerevents/646.
+◎
 deltaX
 • See deltaZ attribute.
 ◎
@@ -9410,6 +9414,9 @@ <h4 title="WheelEventInit">6.1.2. `WheelEventInit^I</h4>
 ◎
 deltaMode
 • Initializes the deltaMode attribute on the WheelEvent object to the enumerated values 0, 1, or 2, which represent the amount of pixels scrolled (DOM_DELTA_PIXEL), lines scrolled (DOM_DELTA_LINE), or pages scrolled (DOM_DELTA_PAGE) if the rotation of the wheel would have resulted in scrolling.
+◎
+momentum
+• Initializes the momentum attribute.
 </p>
 
 			</section>