data-featherlight Attribut allen Links hinzufügen um sie in einer Lightbox zu öffnen

lightbox.js

/**********
 * Fügt das data-featherlight attribut allen Bildlinks hinzu
 * Plugin: https://github.com/noelboss/featherlight/
 **/
$('a[href*=".png"], a[href*=".gif"], a[href*=".jpg"]').each(function() {
    if (this.href.indexOf('?') < 0) {
        $(this).attr('data-featherlight', 'image');
    }
});