1606585 - Input events from inputs with the range type have composed set to false.

Status: RESOLVED DUPLICATE of bug 1554965

(Core :: DOM: Core & HTML, defect)

Description

[Gareth Latty]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:71.0) Gecko/20100101 Firefox/71.0

Steps to reproduce:

Create an input with type="range".
Handle an input event.

Actual results:

composed is false on the event.

Expected results:

composed should be true—it being false means that web components that use a slider internally don't work as expected.

See https://jsfiddle.net/mL95stg6/ for an example using web components where the event doesn't fire as it isn't composed.

Comment 1

[Gareth Latty]

This seems to be very similar to https://bugzilla.mozilla.org/show_bug.cgi?id=1554965 - it may well be the case this is a problem for other types of input too.

Comment 2

[Hsin-Yi Tsai (she/her) [:hsinyi]]

(In reply to Gareth Latty from comment #1)

This seems to be very similar to https://bugzilla.mozilla.org/show_bug.cgi?id=1554965 - it may well be the case this is a problem for other types of input too.

Thanks for the reference to the bug 1554965. Edgar, do you maybe know if this is related to that?

Comment 3

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

I could not reproduce this on latest Nightly. Mark as a duplicate of bug 1554965.