[wp-trac] [WordPress Trac] #21170: JavaScript actions and filters

[WordPress Trac]

#21170: JavaScript actions and filters
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 Reporter:  koopersmith             |       Owner:  adamsilverstein
     Type:  feature request         |      Status:  assigned
 Priority:  normal                  |   Milestone:  Future Release
Component:  General                 |     Version:  3.4
 Severity:  normal                  |  Resolution:
 Keywords:  has-patch dev-feedback  |     Focuses:  javascript
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Comment (by azaozz):

 Replying to [comment:112 aduth]:

 21170.5.2.diff looks good. Couple more things to consider:
 - Do we want to do "jQuery style namespacing" or something similar? The
 problem is removing particular callback from a filter in PHP is very easy
 as the "identifier" is usually a string (even when it is a method). This
 is not the case in JS where a callback cannot be removed if there is no
 reference to it. If not, should we add some easy way to remove specific
 callbacks?
 - In PHP there are `doing_action()`, `did_action()`, and `has_action()`.
 They are somewhat useful in some cases. Do we need equivalents in JS?

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Ticket URL: <https://core.trac.wordpress.org/ticket/21170#comment:115>
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