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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 |
---|---|
753 |
|
754 | /** |
755 | * Fires once the Customizer preview has initialized and JavaScript |
756 | * settings have been printed. |
757 | * |
758 | * @since 3.4.0 |
759 | * |
760 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
761 | */ |
762 | do_action( 'customize_preview_init', $this ); |
763 | } |
764 |
|
765 | /** |
766 | * Prevent sending a 404 status when returning the response for the customize |
767 | * preview, since it causes the jQuery Ajax to fail. Send 200 instead. |
768 | * |
769 | * @since 4.0.0 |
770 | * @access public |
771 | */ |