[wp-trac] [WordPress Trac] #34204: Add fallbacks for WP oEmbed JavaScript & CSS

[WordPress Trac]

#34204: Add fallbacks for WP oEmbed JavaScript & CSS
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 Reporter:  peterwilsoncc  |       Owner:
     Type:  defect (bug)   |      Status:  new
 Priority:  normal         |   Milestone:  4.4
Component:  Embeds         |     Version:  trunk
 Severity:  normal         |  Resolution:
 Keywords:  has-patch      |     Focuses:  javascript
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Comment (by peterwilsoncc):

 Ok, so hands up if your forgot the entire point of the security attribute
 was to prevent JS running in older browsers :)

 Revised approach:

 * share icon only displays if JavaScript is running in the iframe
 * security policy locks out browsers without querySelector/modern events
 so reverted to feature test in patch one
 * css fallbacks still in play for the browser impaired

 @ocean90

 There's not a reliable feature detect available,
 [https://github.com/Modernizr/Modernizr/issues/687 see Modernizr
 discussion ], but it an approach worth considering. Inline SVG with text
 fallbacks may be the ticket.

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Ticket URL: <https://core.trac.wordpress.org/ticket/34204#comment:16>
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