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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 |
---|---|
738 |
|
739 | /** |
740 | * Fires once the Customizer preview has initialized and JavaScript |
741 | * settings have been printed. |
742 | * |
743 | * @since 3.4.0 |
744 | * |
745 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
746 | */ |
747 | do_action( 'customize_preview_init', $this ); |
748 | } |
749 |
|
750 | /** |
751 | * Prevent sending a 404 status when returning the response for the customize |
752 | * preview, since it causes the jQuery AJAX to fail. Send 200 instead. |
753 | * |
754 | * @since 4.0.0 |
755 | * @access public |
756 | */ |