Enable wp media library to verify already chosen pictures displayed in div

I wish to replicate the media selector library in my plugin:
(I’ve a button, I click on on this, the media library show, I choose pictures and add in a div under)
Once I choose one picture or a number of pictures the button "checked" show for every picture (in the fitting up nook).
These chosen pictures show properly in my div but when I click on once more on the media library button my chosen pictures are usually not checked.

I can not discover the javascript documentation who clarify how I get the chosen picture id permitting the library to outline these pictures as chosen.
I attempted to do this with the script in remark however plainly the script "media_selector_print_scripts" does not exist anymore.
the under script is positioned in a php file relying of principal php file of plugin.

/*operate media_selector_print_scripts() {
$my_saved_attachment_post_id = get_option( 'media_selector_attachment_id', 0 );
}
add_action( 'admin_footer', 'media_selector_print_scripts' );*/

var myplugin_media_upload;
//var wp_media_post_id = wp.media.mannequin.settings.submit.id; // Retailer the outdated id
//var set_to_post_id = <?php echo $my_saved_attachment_post_id; ?>; // Set this

$('#btnFiles').click on(operate(e) {
        e.preventDefault();
        if( myplugin_media_upload ) {
            //myplugin_media_upload.uploader.uploader.param( 'post_id', set_to_post_id );
            myplugin_media_upload.open();
            return;
        }/*else {
            wp.media.mannequin.settings.submit.id = set_to_post_id;
        }*/
    
        myplugin_media_upload = wp.media.frames.file_frame = wp.media({
            title:"Add a file",
            a number of: true
        });

        myplugin_media_upload.on( 'choose', operate(){
            var attachments = myplugin_media_upload.state().get('choice').map( 
                operate( attachment ) {
                    attachment.toJSON();
                    return attachment;
            });

           var i;
           for (i = 0; i < attachments.size; ++i) {
                $('#block_file').preprend(
                    '<img src="' + 
                    attachments[i].attributes.url + '" class="getFile">'
                );
            }
        });
    myplugin_media_upload.open();

    });