[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:  10upsimon
     Type:  enhancement                          |      Status:  assigned
 Priority:  high                                 |   Milestone:  6.3
Component:  Script Loader                        |     Version:  4.6
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-unit-tests 2nd-        |     Focuses:
  opinion                                        |  performance
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Comment (by azaozz):

 @joemcgill @westonruter Frankly I'm starting to wonder why are you so
 eager to add support for "script after". Is that some kind of a personal
 goal or is there another reason?

 Generally speaking the "script after" functionality promotes writing of
 mediocre JS (scripts that require additional JS code snippets to be
 outputted from PHP in order to work). This was somewhat useful ~10 years
 ago as many WP devs had good knowledge of PHP but weren't particularly
 well versed in JS. However in 2023 I'd like to think that most WP devs
 have a deep understanding of JS, and can implement anything they may need
 or want with "pure" JS, with no need of PHP "crutches" :)

 My opinion still is that re-adding support for "script after" for scripts
 with `async` and `defer` is a step in the wrong direction. Seems it can be
 seen as "locking" the API to use outdated 2010 methods for this new
 functionality instead of attempting to modernize it and try to bring it
 closer to the 2023 best practices.

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Ticket URL: <https://core.trac.wordpress.org/ticket/12009#comment:128>
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