WordPress at a glance
function is not described

WP_Widget_Media_Audio::enqueue_preview_scripts() public WP 4.8.0

Enqueue preview scripts.

These scripts normally are enqueued just-in-time when an audio shortcode is used. In the customizer, however, widgets can be dynamically added and rendered via selective refresh, and so it is important to unconditionally enqueue them in case a widget does get added.

{} It's a method of the class: WP_Widget_Media_Audio{}

Hooks from the method
Return

null. Nothing.

Usage

$WP_Widget_Media_Audio = new WP_Widget_Media_Audio();
$WP_Widget_Media_Audio->enqueue_preview_scripts();

Changelog

Since 4.8.0 Introduced.

Code of WP_Widget_Media_Audio::enqueue_preview_scripts() WP 5.7.2

<?php
public function enqueue_preview_scripts() {
	/** This filter is documented in wp-includes/media.php */
	if ( 'mediaelement' === apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ) ) {
		wp_enqueue_style( 'wp-mediaelement' );
		wp_enqueue_script( 'wp-mediaelement' );
	}
}