[wp-trac] [WordPress Trac] #47069: The admin bar on the front end has reduced functionality and bugs when jQuery not being used

[WordPress Trac]

#47069: The admin bar on the front end has reduced functionality and bugs when
jQuery not being used
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 Reporter:  afercia                  |       Owner:  audrasjb
     Type:  defect (bug)             |      Status:  reopened
 Priority:  normal                   |   Milestone:  5.3.1
Component:  Toolbar                  |     Version:  5.0
 Severity:  normal                   |  Resolution:
 Keywords:  has-screenshots early    |     Focuses:  accessibility,
  has-patch 2nd-opinion              |  javascript
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Comment (by azaozz):

 Replying to [comment:73 dinhtungdu]:
 > I'm thinking about checking variables before attaching events to them
 but it doesn't seem to be the best solution.

 Yeah, it's either that or perhaps wrapping the whole thing in a `try {}
 catch () {}`. Checking node existence seems cleaner, perhaps? :)

 Also not really sure about the `Element.prototype.matches()` polyfill:
 https://developer.mozilla.org/en-US/docs/Web/API/Element/matches. It's not
 a bad idea, but might bring some compatibility issues eventually? Need to
 keep in mind that this will run on the front-end for logged-in users.
 Generally the browsers they use should conform to the minimal browser
 support for wp-admin (IE11, newer edge, Chromium and Firefox) but having
 some "error silencing" for old browsers (to emulate jQuery behaviour) may
 be a good idea.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47069#comment:74>
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