[wp-trac] [WordPress Trac] #21562: Twenty Twelve: improve navigation to be mobile-first and not rely on JS for hiding and showing

[WordPress Trac]

#21562: Twenty Twelve: improve navigation to be mobile-first and not rely on JS for
hiding and showing
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 Reporter:  cfinke         |       Owner:
     Type:  defect (bug)   |      Status:  new
 Priority:  normal         |   Milestone:  3.5
Component:  Bundled Theme  |     Version:
 Severity:  normal         |  Resolution:
 Keywords:  has-patch      |
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Comment (by lancewillett):

 Note from Koop from a JS code review in IRC yesterday, in navigation.js we
 should check the existence of the button and menu elements before
 operating on them (exit the function early if null or empty, etc).

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Ticket URL: <http://core.trac.wordpress.org/ticket/21562#comment:38>
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