[pointerevents] Back and Forward buttons not specified for MouseEvent.buttons (#628)

CendioOssman has just created a new issue for https://github.com/w3c/pointerevents:

== Back and Forward buttons not specified for MouseEvent.buttons ==
There appears to be a de facto standard for how the back and forward button of mice are mapped to the `MouseEvent.buttons` field. I would appreciate it if this could be made de jure to avoid future bugs and confusion.

It is nicely specified for `MouseEvent.button`. But unfortunately, you cannot blindly assume what that means for `MouseEvent.buttons` as the two attributes already use a differing ordering of buttons.

Please view or discuss this issue at https://github.com/w3c/pointerevents/issues/628 using your GitHub account


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Received on Monday, 12 January 2026 22:07:50 UTC