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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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442 |
|
443 | /** |
444 | * Fires once the Customizer preview has initialized and JavaScript |
445 | * settings have been printed. |
446 | * |
447 | * @since 3.4.0 |
448 | * |
449 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
450 | */ |
451 | do_action( 'customize_preview_init', $this ); |
452 | } |
453 |
|
454 | /** |
455 | * Prevent sending a 404 status when returning the response for the customize |
456 | * preview, since it causes the jQuery AJAX to fail. Send 200 instead. |
457 | * |
458 | * @since 4.0.0 |
459 | * @access public |
460 | */ |