You should be able to call wp_enqueue_script() as part of your Widget output.

You should be able to call wp_enqueue_script() as part of your Widget output.

Edit

Quick-and-dirty, using the bare-bones Widgets API class example:

<?php class wpse48337_Widget extends WP_Widget { public function __construct() { // widget actual processes } public function form( $instance ) { // outputs the options form on admin } public function update( $new_instance, $old_instance ) { // processes widget options to be saved } public function widget( $args, $instance ) { // outputs the content of the widget } } register_widget( 'wpse48337_Widget' ); ?> 

Add your wp_enqueue_script() call inline, within your Widget's output - i.e. within the public function widget():

<?php public function widget( $args, $instance ) { // outputs the content of the widget // Enqueue a script needed for // the Widget's output wp_enqueue_script( 'jquery-pluginname', $path, $deps ); // Rest of widget output goes here... } ?>