[wp-trac] [WordPress Trac] #60478: Upgrade to JQuery 4

[WordPress Trac]

#60478: Upgrade to JQuery 4
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 Reporter:  nickchomey               |       Owner:  (none)
     Type:  enhancement              |      Status:  new
 Priority:  normal                   |   Milestone:  7.0
Component:  External Libraries       |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  needs-patch needs-       |     Focuses:  javascript,
  testing                            |  performance
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Changes (by TobiasBg):

 * keywords:  needs-patch => needs-patch needs-testing
 * milestone:  Future Release => 7.0


Comment:

 I tentatively moved this to milestone 7.0. Given that we are still in the
 alpha phase, it might good to implement this soon, to get lots of testing.

 Main changes are removed support with older versions of IE, but that
 should not be critical as WordPress did that itself recently.
 However, several already deprecated API methods (e.g. those that now have
 native JS alternatives) have been removed, which could have an impact on
 plugins that are (still) using them (despite long-existing deprecation
 warnings).

 Given that this breaks backward compatibility, it might be worth
 considering updating jQuery-migrate to 3.6.0 first (see #51812), if the
 direct update to jQuery 4.0 turns out to have too many immediate
 downsides.


 An upgrade guide is available at https://jquery.com/upgrade-guide/4.0/

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Ticket URL: <https://core.trac.wordpress.org/ticket/60478#comment:34>
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