WP_HTML_Processor::add_class( string $class_name ): bool

Adds a new class name to the currently matched tag.

Parameters

bool Whether the class was set to be added.

public function add_class( $class_name ): bool {
	return $this->is_virtual() ? false : parent::add_class( $class_name );
}

Uses	Description
WP_HTML_Processor::is_virtual()`wp-includes/html-api/class-wp-html-processor.php`	Indicates if the currently-matched token is virtual, created by a stack operation while processing HTML, rather than a token found in the HTML text itself.
WP_HTML_Tag_Processor::add_class()`wp-includes/html-api/class-wp-html-tag-processor.php`	Adds a new class name to the currently matched tag.

Version	Description
6.6.0	Introduced.

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