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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 |
|---|---|
| 121 | * These scripts normally are enqueued just-in-time when an audio shortcode is used. |
| 122 | * In the customizer, however, widgets can be dynamically added and rendered via |
| 123 | * selective refresh, and so it is important to unconditionally enqueue them in |
| 124 | * case a widget does get added. |
| 125 | * |
| 126 | * @since 4.8.0 |
| 127 | */ |
| 128 | public function enqueue_preview_scripts() { |
| 129 | /** This filter is documented in wp-includes/media.php */ |
| 130 | if ( 'mediaelement' === apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ) ) { |
| 131 | wp_enqueue_style( 'wp-mediaelement' ); |
| 132 | wp_enqueue_script( 'wp-mediaelement' ); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Loads the required media files for the media manager and scripts for media widgets. |
| 138 | * |
| 139 | * @since 4.8.0 |