[wp-trac] [WordPress Trac] #12009: Add support for HTML 5 "async" and "defer" attributes

[WordPress Trac]

#12009: Add support for HTML 5 "async" and "defer" attributes
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 Reporter:  Otto42                           |       Owner:  joemcgill
     Type:  enhancement                      |      Status:  closed
 Priority:  high                             |   Milestone:  6.3
Component:  Script Loader                    |     Version:  4.6
 Severity:  normal                           |  Resolution:  fixed
 Keywords:  needs-dev-note has-patch commit  |     Focuses:  performance
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Comment (by westonruter):

 Note that the landed feature does not include support for delaying inline
 scripts. This means that if a delayed script (either `async` or `defer`)
 has an inline `after` script, the delayed script will be forced to be
 blocking to preserve the execution order. For revisiting the
 implementation of delayed inline scripts to avoid this, see #58632.

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Ticket URL: <https://core.trac.wordpress.org/ticket/12009#comment:157>
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