RemoveCommand.php

<?php

namespace Drupal\Core\Ajax;


/**
 * AJAX command for calling the jQuery remove() method.
 *
 * The 'remove' command instructs the client to use jQuery's remove() method
 * to remove each of elements matched by the given selector, and everything
 * within them.
 *
 * This command is implemented by Drupal.AjaxCommands.prototype.remove()
 * defined in misc/ajax.js.
 *
 * @see http://docs.jquery.com/Manipulation/remove#expr
 *
 * @ingroup ajax
 */
class RemoveCommand implements CommandInterface {
    
    /**
     * The CSS selector for the element(s) to be removed.
     *
     * @var string
     */
    protected $selector;
    
    /**
     * Constructs a RemoveCommand object.
     *
     * @param string $selector
     *   The selector.
     */
    public function __construct($selector) {
        $this->selector = $selector;
    }
    
    /**
     * Implements Drupal\Core\Ajax\CommandInterface:render().
     */
    public function render() {
        return [
            'command' => 'remove',
            'selector' => $this->selector,
        ];
    }

}