[wp-trac] [WordPress Trac] #28580: Speed up customizer by lazy-loading controls and settings as needed

[WordPress Trac]

#28580: Speed up customizer by lazy-loading controls and settings as needed
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 Reporter:  westonruter  |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Future Release
Component:  Customize    |     Version:  3.4
 Severity:  normal       |  Resolution:
 Keywords:  needs-patch  |     Focuses:  javascript
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Comment (by celloexpressions):

 Depending on how fast the lazy-loading ends up being, we should probably
 do something like the following:
 - Load top-level section and panel headings from PHP.
 - Load contents of top-level sections and section headings in panels via
 ajax during the load process.
 - Load sub-section contents only when a panel is entered.

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Ticket URL: <https://core.trac.wordpress.org/ticket/28580#comment:3>
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