[wp-trac] [WordPress Trac] #40354: Improper use of jQuery hasClass method

[WordPress Trac]

#40354: Improper use of jQuery hasClass method
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 Reporter:  kostasx                     |       Owner:
     Type:  defect (bug)                |      Status:  new
 Priority:  normal                      |   Milestone:  4.8
Component:  Media                       |     Version:  4.4
 Severity:  normal                      |  Resolution:
 Keywords:  needs-patch good-first-bug  |     Focuses:  javascript
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Comment (by kostasx):

 Replying to [comment:3 adamsilverstein]:
 > @kostasx thanks for the report.
 >
 > I was able to verify the selector doesn't work the way it is written.
 Did you discover this bug because of some unexpected behavior? The fix
 looks straightforward here, I want to make sure we are actually fixing and
 not breaking anything so it is helpful to be able to reproduce.
 >

 Hello. Yes, I discovered the bug while working with multiple media
 elements (audio players) on a page. When the wrong selector was used, as
 is the case in the pre-patched version, an already activated media element
 was re-activated causing the element to start playing again. When the
 patch was applied, the already activated media element continued playing
 with any problem.

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Ticket URL: <https://core.trac.wordpress.org/ticket/40354#comment:4>
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