Consider not throwing on querySelector("::-webkit-scrollbar")

NEW
Unassigned

Status

()

Core
DOM: CSS Object Model
P3
normal
a year ago
a year ago

People

(Reporter: Thomas Wisniewski, Unassigned)

Tracking

Trunk
Points:
---

Firefox Tracking Flags

(firefox53 affected)

Details

(Whiteboard: [webcompat])

(Reporter)

Description

a year ago
We received a report on webcompat.com which boiled down to site navigation being partly broken because document.querySelector("::-webkit-scrollbar") throws an error:

>SyntaxError: '::-webkit-scrollbar' is not a valid selector

In this case, it was throwing in a commercial web library by 3D Issue, so it's likely that other sites are also going to have problems with this (given that this is a pseudo-element that works in Chrome/WebKit).

Perhaps we ought to not throw in this case, but simply return no elements for that pseudo-element?
I'd be hesitant to do this based on a single report, since this is a mechanism that can be used to tell whether a selector is actually supported.
Priority: -- → P3
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