wp.customize.controlConstructor['kirki-dropdown-pages'] = wp.customize.Control.extend({ // When we're finished loading continue processing ready: function() { 'use strict'; var control = this, element = this.container.find( 'select' ); jQuery( element ).selectize(); this.container.on( 'change', 'select', function() { control.setting.set( jQuery( this ).val() ); }); } });